Arduino & SCM Supplies

1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on it

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1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on it

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1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on it

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1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on it

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1. With USB adapter cable, you can use cell phone chargers and other USB port power supply2. Schumann wave itself is not directly on the audio or video products to improve the sound and picture quality, but the role of the spatial environment, the human body's perception of sound and image, the feedback of nature and life improve3. The role of the output indicator control switch: night if you feel that the indicator light affects the rest, you can use this switch to turn off the indicator light, the instructions to turn off the indicator light, the other circuits work normally4. With the shell need to install it yourself5. Note: please use a separate regulated power supply for each unit to avoid mutual interference with multiple shared power supply, and to facilitate the separate placement of independent6. Size: about 10.2 x 8cm; with shell: about 11.3 x 9.1 x 2.35cm7. Weight: about 57g; with shell: about 170g

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1. With USB adapter cable, you can use cell phone chargers and other USB port power supply2. Schumann wave itself is not directly on the audio or video products to improve the sound and picture quality, but the role of the spatial environment, the human body's perception of sound and image, the feedback of nature and life improve3. The role of the output indicator control switch: night if you feel that the indicator light affects the rest, you can use this switch to turn off the indicator light, the instructions to turn off the indicator light, the other circuits work normally4. With the shell need to install it yourself5. Note: please use a separate regulated power supply for each unit to avoid mutual interference with multiple shared power supply, and to facilitate the separate placement of independent6. Size: about 10.2 x 8cm; with shell: about 11.3 x 9.1 x 2.35cm7. Weight: about 57g; with shell: about 170g

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1. A single module can drive an 8x8 common negative dot matrix2. Module operating voltage: 5V3. With 64 fixed screw holes, hole diameter 3mm4. With input/output interfaces, support multiple modules cascade.5. 3 IO ports can drive 1 dot matrix, no flicker when displaying.6. Size: 12.8 x 3.2 x 1.3cm, cable length about 20cm7. Weight: about 45.2gWiring instructions:1. Left side is input port, right side is output port.2. When controlling a single module, connect the input port to the CPU.3. When multiple modules are cascaded, the input of the first module is connected to the CPU, the output is connected to the input of the second module, the output of the second module is connected to the input of the third module, and so on.4. Take 51 microcontroller as an example:- VCC → 5V- GND → GND- DIN → P2.2- CS → P2.1- CLK → P2.0

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1. A single module can drive an 8x8 common negative dot matrix2. Module operating voltage: 5V3. With 64 fixed screw holes, hole diameter 3mm4. With input/output interfaces, support multiple modules cascade.5. 3 IO ports can drive 1 dot matrix, no flicker when displaying.6. Size: 12.8 x 3.2 x 1.3cm, cable length about 20cm7. Weight: about 45.2gWiring instructions:1. Left side is input port, right side is output port.2. When controlling a single module, connect the input port to the CPU.3. When multiple modules are cascaded, the input of the first module is connected to the CPU, the output is connected to the input of the second module, the output of the second module is connected to the input of the third module, and so on.4. Take 51 microcontroller as an example:- VCC → 5V- GND → GND- DIN → P2.2- CS → P2.1- CLK → P2.0

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1. A single module can drive an 8x8 common negative dot matrix2. Module operating voltage: 5V3. With 64 fixed screw holes, hole diameter 3mm4. With input/output interfaces, support multiple modules cascade.5. 3 IO ports can drive 1 dot matrix, no flicker when displaying.6. Size: 12.8 x 3.2 x 1.3cm, cable length about 20cm7. Weight: about 45.2gWiring instructions:1. Left side is input port, right side is output port.2. When controlling a single module, connect the input port to the CPU.3. When multiple modules are cascaded, the input of the first module is connected to the CPU, the output is connected to the input of the second module, the output of the second module is connected to the input of the third module, and so on.4. Take 51 microcontroller as an example:- VCC → 5V- GND → GND- DIN → P2.2- CS → P2.1- CLK → P2.0

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1. Integrated circuit boards for rechargeable (generally lithium batteries) protection2. Discharge: large discharge current: 15A; instantaneous discharge current: 25A3. Charging: voltage: 25.5V; current: 15A4. Overcharge protection: detection voltage: about 4.28V; delay time: 0.1S; release voltage: about 4.08V5. Over-discharge protection: detection voltage: 2.55V; detection delay: 0.1S; release voltage: about 2.9V6. Over-current protection: detection voltage: 150mV; detection delay: 9MS; current: about 30A; release condition: disconnect the load7. Short-circuit protection: protection condition: external load short-circuit; detection delay: 250uS; release condition: disconnect the negative open8. Internal resistance: the internal resistance of the main circuit is less than or equal to 20 mOhm9. Self-consumption: working current: less than or equal to 30uA; sleep current (when the battery is over-discharged): less than or equal to 10uA10. Operating temperature range: -30/+80 degrees Celsius11. Size: about 50 x 32 x 3mm12. Weight: about 8g

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1. Caution:- Can not be used for lithium iron phosphate batteries, hernia lamps, hand drill battery packs- Can not be used for electric fishing machine battery pack, electric bicycle battery pack, children's car batteries, more than 550 power type motor, 1W fish-eye LED lights2. Applicable to the following products: massager battery pack, LED lamp backup power, 12V electronic products, solar street lamp battery pack, monitoring backup power, and other products3. 3A current discharge products, battery discharge rate should be more than 3C.4. The battery will be hot in use is the battery multiplier is not applicable, this situation can not be used for a long time, the battery will be quickly damaged5. Strictly according to the diagram wiring 0V (B-), 3.7V (B1), 7.4V (B2), 11.1V (B3), 14.8V (B4), 18.5V (B+), do not intentionally short-circuit6. need to charge first after connecting the wire, only then there will be output7. When connecting 5 groups of batteries in series, please ensure that the voltage of each group of batteries is the same, if not, please fill each group of batteries individually and then use them in series. When discharging test, the batteries with fast voltage drop are poor batteries8. Note: do not mix good batteries and bad batteries together, the closer the capacity/internal resistance of the 5 groups of batteries, the better (3 good batteries + 2 bad batteries = 5 bad battery results)

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1. DIY design helps cultivate logical thinking and practical abilities;2. Support your own programming and learn from it3. Support IOS/Android App control, easy to operate4. Use MakeCode graphical Python programming to support dual-system gyroscope calibration equipped with Super:bit5. Tumble: The Drill Building Kit contains 315 bricks and two building motors for building balance bikes and unicycles. It is equipped with a super:bit expansion board, uses BBC micro:bit as the core controller, and uses MakeCode Editor graphics and Python programming to realize game play such as colorful lights and music whistles. Using physical self-balancing method, the gyroscope calibrates the movement posture in real time, which can keep the car balanced and walk on various terrains. Compared with other building block carts, its biggest difference is that it adopts a rubber band fixed structure, which has the characteristics of shock absorption, anti-fall, and easy buffering. In addition, it also supports Android/iOS dual system Bluetooth APP control, as well as remote control using a micro:bit handle. We will provide detailed installation tutorials and it only takes 30 minutes to complete the assembly.Packing list:Tumble:bit building block packRecommended reason: suitable for users who already have micro:bit and Super:bit expansion boardBuilding blocks x 315Building block motor x 2Tumble:bit building block pack+super:bitRecommended reason: suitable for users who already have micro:bitBuilding blocks x 315Building block motor x 2Super:bit expansion board x 1USB cable x 1Lithium battery x 1Tumble:bit package (with micro:bit)Recommended reason: complete configuration to use directlyBuilding blocks x 315Building block motor x 2Super:bit expansion board x 1USB cable x 1Lithium battery x 1BBC micro:bit x 1Note: This robot car will not work without a Microbit board, if you don't have a Microbit board, please choose the version with Microbit.

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1. DIY design helps cultivate logical thinking and practical abilities;2. Support your own programming and learn from it3. Support IOS/Android App control, easy to operate4. Use MakeCode graphical Python programming to support dual-system gyroscope calibration equipped with Super:bit5. Tumble: The Drill Building Kit contains 315 bricks and two building motors for building balance bikes and unicycles. It is equipped with a super:bit expansion board, uses BBC micro:bit as the core controller, and uses MakeCode Editor graphics and Python programming to realize game play such as colorful lights and music whistles. Using physical self-balancing method, the gyroscope calibrates the movement posture in real time, which can keep the car balanced and walk on various terrains. Compared with other building block carts, its biggest difference is that it adopts a rubber band fixed structure, which has the characteristics of shock absorption, anti-fall, and easy buffering. In addition, it also supports Android/iOS dual system Bluetooth APP control, as well as remote control using a micro:bit handle. We will provide detailed installation tutorials and it only takes 30 minutes to complete the assembly.Packing list:Tumble:bit building block packRecommended reason: suitable for users who already have micro:bit and Super:bit expansion boardBuilding blocks x 315Building block motor x 2Tumble:bit building block pack+super:bitRecommended reason: suitable for users who already have micro:bitBuilding blocks x 315Building block motor x 2Super:bit expansion board x 1USB cable x 1Lithium battery x 1Tumble:bit package (with micro:bit)Recommended reason: complete configuration to use directlyBuilding blocks x 315Building block motor x 2Super:bit expansion board x 1USB cable x 1Lithium battery x 1BBC micro:bit x 1Note: This robot car will not work without a Microbit board, if you dont have a Microbit board, please choose the version with Microbit.

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1. Input voltage: DC12V-40V2. Control power: 0.01-400W3. PWM frequency: 13khz4. PWM pulse width speed range: 10-100 percent5. Applicable current: rated current 8A, through the current up to 10A, static current 0.02A (standby state)6. Weight: without stand about 62.6 g, with stand about 68.6 g7. Size: about 7 x 6.5 cmFeatures:1. Using this controller to control the speed of DC motor, high efficiency, high torque, low heat generation, with reverse polarity protection and high current protection function2. The circuit board is made of military-grade boards with meticulous workmanship and reliable quality, which is widely used in industrial production3. Power tube using IRF3205 the bull, do not worry about not moving your motor. (parameters leakage current Id large value: 82A; voltage Vds large: 75V; open-state resistance, Rds (on): 0.013ohm)4. Terminal use 8500 high current terminal, labeled 300V20APrecautions and instructions for use:1. DC motor governor input is DC, not directly connected to AC power (such as: household 220V AC), otherwise it will be burned out2. DC power supply positive and negative poles can not be reversed, otherwise the governor will be damaged3. The motor can not be divided into positive and negative, when the running direction is inconsistent with the expectation, you can change the direction by adjusting the wire sequence4. Adjusting the potentiometer knob can change the output duty cycle of the governor, thus changing the speed of the motor

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Product parameters1. Self-use current: less than 30uA2. Working current: up to 30A3. Instantaneous discharge current: up to 40A4. Overcharge voltage range: 3.7V Lithium about 4.25V, 3.2V LiFePO4 about 3.75V5. Over-discharge voltage range: 3.7V Lithium about 2.5V, 3.2V LiFePO4 about 2.1V6. Charging voltage: 3.7V Lithium about 16.8V-17V, 3.2V LiFePO4 about 14.4V-15V7. Basic function: anti-overcharge, over-discharge, short circuit, over-current protection, with charging balance protection function8. Weight: 3.7V Lithium about 18.1 g, 3.2V LiFePO4 about 17.9 g9. Size: about 5.6 x 4.8 cmThe described power range is suitable for the following products:1. Massager battery packs, LED light backup power, 12V electronic products, solar street light battery packs, surveillance backup power, and other productsPrecautions:1. Lithium battery protection plate can not be used for lithium iron phosphate batteries, hernia lamps, electricnic drill battery packs, can not be used for electricnic fishing machine battery packs, electricnic bicycle battery packs, children car batteries, more than 550 power-type motors, 1W fisheye LED lamps for the above combination of purchases of the customer, please note that2. 3A current discharge products, battery discharge rate should be more than 3C3. Multiplier formula: 1C multiplier battery, 2000 capacity equals to 2AHx1=2A working current; 3C multiplier battery, 2000 capacity equals to 2AHx3=6A working current4. The battery will be hot in use is the battery multiplier is not applicable, this situation can not be used for a long time, the battery will be quickly damaged

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Product parameters1. Self-use current: less than 30uA2. Working current: up to 30A3. Instantaneous discharge current: up to 40A4. Overcharge voltage range: 3.7V Lithium about 4.25V, 3.2V LiFePO4 about 3.75V5. Over-discharge voltage range: 3.7V Lithium about 2.5V, 3.2V LiFePO4 about 2.1V6. Charging voltage: 3.7V Lithium about 16.8V-17V, 3.2V LiFePO4 about 14.4V-15V7. Basic function: anti-overcharge, over-discharge, short circuit, over-current protection, with charging balance protection function8. Weight: 3.7V Lithium about 18.1 g, 3.2V LiFePO4 about 17.9 g9. Size: about 5.6 x 4.8 cmThe described power range is suitable for the following products:1. Massager battery packs, LED light backup power, 12V electronic products, solar street light battery packs, surveillance backup power, and other productsPrecautions:1. Lithium battery protection plate can not be used for lithium iron phosphate batteries, hernia lamps, electricnic drill battery packs, can not be used for electricnic fishing machine battery packs, electricnic bicycle battery packs, children car batteries, more than 550 power-type motors, 1W fisheye LED lamps for the above combination of purchases of the customer, please note that2. 3A current discharge products, battery discharge rate should be more than 3C3. Multiplier formula: 1C multiplier battery, 2000 capacity equals to 2AHx1=2A working current; 3C multiplier battery, 2000 capacity equals to 2AHx3=6A working current4. The battery will be hot in use is the battery multiplier is not applicable, this situation can not be used for a long time, the battery will be quickly damaged

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1. Input voltage: DC12V-40V2. Control power: 0.01-400W3. PWM frequency: 13khz4. PWM pulse width speed range: 10-100 percent5. Applicable current: rated current 8A, through the current up to 10A, static current 0.02A (standby state)6. Weight: without stand about 62.6 g, with stand about 68.6 g7. Size: about 7 x 6.5 cmFeatures:1. Using this controller to control the speed of DC motor, high efficiency, high torque, low heat generation, with reverse polarity protection and high current protection function2. The circuit board is made of military-grade boards with meticulous workmanship and reliable quality, which is widely used in industrial production3. Power tube using IRF3205 the bull, do not worry about not moving your motor. (parameters leakage current Id large value: 82A; voltage Vds large: 75V; open-state resistance, Rds (on): 0.013ohm)4. Terminal use 8500 high current terminal, labeled 300V20APrecautions and instructions for use:1. DC motor governor input is DC, not directly connected to AC power (such as: household 220V AC), otherwise it will be burned out2. DC power supply positive and negative poles can not be reversed, otherwise the governor will be damaged3. The motor can not be divided into positive and negative, when the running direction is inconsistent with the expectation, you can change the direction by adjusting the wire sequence4. Adjusting the potentiometer knob can change the output duty cycle of the governor, thus changing the speed of the motor

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1. This module complies with international safety standards, with isolation slots between the control area and the load area2. Using relays, with power and relay action indication, absorb bright, disconnect not bright3. When there is signal at the signal input, the common terminal and the normally open terminal will conduct4. It can be used as a microcontroller development board module, and can be used for home appliance control5. Control DC or AC signals, can control 220V AC loads6. There is a normally open and a normally closed contacts7. Blue KF301 terminals to connect the control line is more convenient8. Weight: about 12.4 g9. Size: about 4.3 x 2.7 cmAbout the high level and low level trigger mode description:1. High level triggering refers to the triggering mode where there is a voltage between the signal input and ground, which can be understood as a mode of triggering by short-circuiting the signal input and the positive pole of VCC2. Low level trigger refers to the trigger mode where the voltage between the signal input and the ground is OV, which can be understood as a mode where the signal input is triggered by a short circuit with the negative pole of GND

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1. This module complies with international safety standards, with isolation slots between the control area and the load area2. Using relays, with power and relay action indication, absorb bright, disconnect not bright3. When there is signal at the signal input, the common terminal and the normally open terminal will conduct4. It can be used as a microcontroller development board module, and can be used for home appliance control5. Control DC or AC signals, can control 220V AC loads6. There is a normally open and a normally closed contacts7. Blue KF301 terminals to connect the control line is more convenient8. Weight: about 12.4 g9. Size: about 4.3 x 2.7 cmAbout the high level and low level trigger mode description:1. High level triggering refers to the triggering mode where there is a voltage between the signal input and ground, which can be understood as a mode of triggering by short-circuiting the signal input and the positive pole of VCC2. Low level trigger refers to the trigger mode where the voltage between the signal input and the ground is OV, which can be understood as a mode where the signal input is triggered by a short circuit with the negative pole of GND

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1. Charging voltage: 12.6V-13.6V2. Continuous charging current (upper limit): 10A3. Continuous discharge current (upper limit): 60A (if the heat dissipation environment is not good, please reduce the load current use)4. Scope of application: suitable for lithium batteries with a nominal voltage of 3.7V and a full voltage of 4.2V (including 18650, 26650, polymer lithium batteries, there is no limitation on the external dimensions)5. Product weight: enhanced version of about 8.8 g, balanced version of about 9.8 g6. Size: enhanced version is about 41 x 55 x 3.4 mm, balanced version is about 41 x 62 x 3.4 mmInstructions for use:1. Enhanced version: suitable for drills with a starting current of up to 120A and a power of up to 260W2. Equalized version: suitable for drills with starting current up to 120A and power up to 260W, with equalizing charging functionCaution:1. Successful starting of the drill requires three 10C-20C power batteries or six 5C-10C power batteries (recommended power battery models: for SONY VTC4, VTC4A, VTC5A, VTC6), OV and 12.6V connecting wires, using copper wires of 4 square millimeters or more (nickel tabs can not be used)2. Successfully start the motorcycle on the higher requirements of the battery, need 6 15C-20C power battery, or 12 10C-15C power battery (recommended power battery models: for SONY VTC4, VTC4A, VTC5A, VTC6), and the motorcycle needs to have a charging voltage stabilization circuit3. Strictly according to the diagram wiring OV, 4.2V, 8.4V, 12.6V, welding line can not touching any component on the board, do not intentionally short circuit4. When welding the battery for the first time or charging, as long as a single battery exceeds 4.2V, the 430 resistor will heat up and discharge (discharge to about 4.19V to stop heating), such as 430 resistor serious heating (so hot that you dare not touch), please check whether the wrong wire

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1. Charging voltage: 12.6V-13V2. Static current: less than 30uA3. Over-discharge voltage range: 2.3-3V4. Overcharge voltage range: 4.25-4.35V5. Upper operating current: 6-8A 6. Upper instantaneous current: 10-13A7. Operating temperature: -40-50 degrees Celsius8. Storage conditions: -40-80 degrees Celsius9. Effective life: more than 30,000 hours10. Internal resistance: less than 100mohm11. Weight: about 3.4 g12. Size: about 53 x 17 x 4 mmCharacteristics:1. Short-circuit protection: can be protected, delayed self-recovery, components for the 2110-CB protection chip and AOD472 x 2 pcs2. 3A current discharge products, battery discharge multiplier should be more than 3C; multiplier calculation formula: 1C multiplier battery, 2000 capacity is equal to 2AHx1 = 2A upper working current; 3C multiplier battery, 2000 capacity is equal to 2AHx3 = 6A upper working current3. The described power range applies to the following products: massager battery pack, LED lamp backup power, 12V electronic products, solar street lamp battery pack, monitoring backup power, and other products4. The battery will be hot in use is the battery multiplier is not applicable, this situation can not be used for a long time, the battery will be quickly damagedPrecautions:1. Strictly according to the diagram wiring 0V (B-), 3.7V (B1), 7.4V (B2), 11.1V (B+), do not intentionally short circuit2. After connecting the wires, you need to charge it first before there will be an output3. 3 groups of batteries in series, please ensure that the voltage of each group of batteries is the same, if not the same, please individually fill each group of batteries and then use in series, discharge test, the fastest voltage drop in that group of batteries is poor battery4. Do not use good batteries and poor batteries together, the closer the capacity/internal resistance of the 3 groups of batteries, the better, (2 good batteries + 1 poor battery effect = 3 poor battery effect)5. This protection board can not be used for lithium iron phosphate batteries, hernia lamps, electrical drill battery packs, electrical fishing machine battery packs, electrical bicycle battery packs, children car batteries, 775 (4A) or more motors, 1W fisheye LED lamps for the above combination of purchases of the customer, please note

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1. Charging voltage: 12.6V-13.6V2. Continuous charging current (upper limit): 10A3. Continuous discharge current (upper limit): 60A (if the heat dissipation environment is not good, please reduce the load current use)4. Scope of application: suitable for lithium batteries with a nominal voltage of 3.7V and a full voltage of 4.2V (including 18650, 26650, polymer lithium batteries, there is no limitation on the external dimensions)5. Product weight: enhanced version of about 8.8 g, balanced version of about 9.8 g6. Size: enhanced version is about 41 x 55 x 3.4 mm, balanced version is about 41 x 62 x 3.4 mmInstructions for use:1. Enhanced version: suitable for drills with a starting current of up to 120A and a power of up to 260W2. Equalized version: suitable for drills with starting current up to 120A and power up to 260W, with equalizing charging functionCaution:1. Successful starting of the drill requires three 10C-20C power batteries or six 5C-10C power batteries (recommended power battery models: for SONY VTC4, VTC4A, VTC5A, VTC6), OV and 12.6V connecting wires, using copper wires of 4 square millimeters or more (nickel tabs can not be used)2. Successfully start the motorcycle on the higher requirements of the battery, need 6 15C-20C power battery, or 12 10C-15C power battery (recommended power battery models: for SONY VTC4, VTC4A, VTC5A, VTC6), and the motorcycle needs to have a charging voltage stabilization circuit3. Strictly according to the diagram wiring OV, 4.2V, 8.4V, 12.6V, welding line can not touching any component on the board, do not intentionally short circuit4. When welding the battery for the first time or charging, as long as a single battery exceeds 4.2V, the 430 resistor will heat up and discharge (discharge to about 4.19V to stop heating), such as 430 resistor serious heating (so hot that you dare not touch), please check whether the wrong wire

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1. Upper operating current: 8A2. Upper limit current: 40A3. Overcharge voltage range: 4. 25±0. 05V4. Over-discharge voltage range: 2.5±0.05V5. Charging voltage: 12.6V-13V6. Self-consumption current: less than 30uA7. Basic function: anti-overcharge, over-discharge, short-circuit, over-current protection8. Weight: about 9.1 g9. Size: about 3.33 x 3.56 cm

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1. This product has voltage display function and USB output (mobile phone charging) function. It has only two wires and is simple to connect. It can be used for DC power supply or 12V or 24V battery in the voltage range of 8-40V. The two USB ports can output 5V2A, automatically distribute output current2. Adopt universal size (48x29mm) design, square hole direct snap-in installation, strong versatility3. Display resolution: (DC8-40V) 0.01V when less than 10V, 0.1V when greater than 10V4. Display mode: three-digit 0.36" LED digital tube5. Lead length: 20cm6. Refresh speed: about 200mS/time7. USB output: 5V2A (current 2A, two USBs automatically allocated)8. Power supply: no power supply required9. Input: 8-40V (can be used for 12V and 24V batteries)10. Overall dimensions: length 48x width 29x thickness 16mm11. Opening size: 46x27mm12. Weight: 25g

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1. Power supply voltage: 9-12VDC input2. Waveforms: square, sine and triangle waves3. Impedance: about 600 ohms4. Frequency: 1Hz-1MHz5. Sine wave:-Amplitude: 0-3V (9V DC input)-Distortion: Less than 1 percent (at 1kHz)-Flatness: +0.05dB 1Hz-100kHz6. Square wave:-Amplitude: 8V (no load 9V DC input)-Rise Time: Less than 50ns (at 1kHz)-Fall time: less than 30ns (at 1kHz)-Symmetry: Less than 5 percent (at 1kHz)7. Triangle wave:-Amplitude: 0-3V (at 9V DC input) -Linearity: Less than 1 percent (up to 100kHz) 10mACircuit features:1. It can generate sine wave, triangle wave and square wave2. Frequency can be from 1HZ-1MHZ, frequency, amplitude adjustable3. 5-bit precision resolution, frequency adjustment with coarse and fine tuning4. Wide range of power supply, can use external power supply 9-12V or 9V battery 5. All direct insertion components, the number of components is small, simple installation and commissioningPrecautions for soldering and mounting, please follow the steps below:1. Components are welded to the front panel, from low to high principle, that is, the first welding low-end components, such as capacitors, resistors, diodes, etc.2. Welding IC sockets, terminals, and finally the power socket, adjustable potentiometer3. Behind the use of diagonal pliers to try to cut short pinsDebugging steps:1. After completing the welding of the IC, XR2206, pay attention to the direction of the IC, the insertion may damage the chip2. Check whether the IC is reverse, such as reverse, please correct in a timely manner3. Insert the power supply, the power supply is 5.5 x 2.1 port, inside and outside the negative pole, the power supply voltage is 9-12V, more than 12V waveform may be unstableSteps for use:1. Insert J1 jumper cap, SIN/TRI blue terminal output sine wave (note that J1, J2 can only be inserted into one of the)2. Insert J2 jumper cap, SIN/TRI blue terminal output triangle wave (note that J1, J2 can only be inserted into one)3. SQU blue terminal outputs pulse4. AMP: sine wave, triangle amplitude adjustment5. FINE: frequency fine-tuning6. Coarse: frequency coarse adjustment

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1. Lithium battery protection board specially designed for lithium phosphate, ternary lithium battery, lithium cobalt oxide, and lithium manganate battery packs.2. Adopt mature protection circuit, IC and support disconnection protection, imported high-current internal resistance MOS (single MOS internal resistance 3 milliohms), with complete and stable charging and discharging various protection functions, battery core hardware balancing processing, balancing current Appropriate, balanced heating is reasonable and does not affect battery pack performance.3. Output current: 80A for separate port; 60A for same port4. We have protective boards with two parameters: lithium iron phosphate and polymer. If your battery is lithium iron phosphate with a nominal 3.2V single cell, you need to select lithium iron phosphate 3.2V in the category. If it is polymer (ternary) , cobalt acid, lithium manganate battery) single battery nominal 3.6V (or 3.7V) please choose the polymer 3.7V classification.5. Working temperature: -20-65 degrees Celsius​

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1. Lithium battery protection board specially designed for lithium phosphate, ternary lithium battery, lithium cobalt oxide, and lithium manganate battery packs.2. Adopt mature protection circuit, IC and support disconnection protection, imported high-current internal resistance MOS (single MOS internal resistance 3 milliohms), with complete and stable charging and discharging various protection functions, battery core hardware balancing processing, balancing current Appropriate, balanced heating is reasonable and does not affect battery pack performance.3. Output current: 80A for separate port; 60A for same port4. We have protective boards with two parameters: lithium iron phosphate and polymer. If your battery is lithium iron phosphate with a nominal 3.2V single cell, you need to select lithium iron phosphate 3.2V in the category. If it is polymer (ternary) , cobalt acid, lithium manganate battery) single battery nominal 3.6V (or 3.7V) please choose the polymer 3.7V classification.5. Working temperature: -20-65 degrees Celsius​

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1. Lithium battery protection board specially designed for lithium phosphate, ternary lithium battery, lithium cobalt oxide, and lithium manganate battery packs.2. Adopt mature protection circuit, IC and support disconnection protection, imported high-current internal resistance MOS (single MOS internal resistance 3 milliohms), with complete and stable charging and discharging various protection functions, battery core hardware balancing processing, balancing current Appropriate, balanced heating is reasonable and does not affect battery pack performance.3. Output current: 80A for separate port; 60A for same port4. We have protective boards with two parameters: lithium iron phosphate and polymer. If your battery is lithium iron phosphate with a nominal 3.2V single cell, you need to select lithium iron phosphate 3.2V in the category. If it is polymer (ternary) , cobalt acid, lithium manganate battery) single battery nominal 3.6V (or 3.7V) please choose the polymer 3.7V classification.5. Working temperature: -20-65 degrees Celsius​

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1. Lithium battery protection board specially designed for lithium phosphate, ternary lithium battery, lithium cobalt oxide, and lithium manganate battery packs.2. Adopt mature protection circuit, IC and support disconnection protection, imported high-current internal resistance MOS (single MOS internal resistance 3 milliohms), with complete and stable charging and discharging various protection functions, battery core hardware balancing processing, balancing current Appropriate, balanced heating is reasonable and does not affect battery pack performance.3. Output current: 80A for separate port; 60A for same port4. We have protective boards with two parameters: lithium iron phosphate and polymer. If your battery is lithium iron phosphate with a nominal 3.2V single cell, you need to select lithium iron phosphate 3.2V in the category. If it is polymer (ternary) , cobalt acid, lithium manganate battery) single battery nominal 3.6V (or 3.7V) please choose the polymer 3.7V classification.5. Working temperature: -20-65 degrees Celsius​

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1. Lithium battery protection board specially designed for lithium phosphate, ternary lithium battery, lithium cobalt oxide, and lithium manganate battery packs.2. Adopt mature protection circuit, IC and support disconnection protection, imported high-current internal resistance MOS (single MOS internal resistance 3 milliohms), with complete and stable charging and discharging various protection functions, battery core hardware balancing processing, balancing current Appropriate, balanced heating is reasonable and does not affect battery pack performance.3. Output current: 80A for separate port; 60A for same port4. We have protective boards with two parameters: lithium iron phosphate and polymer. If your battery is lithium iron phosphate with a nominal 3.2V single cell, you need to select lithium iron phosphate 3.2V in the category. If it is polymer (ternary) , cobalt acid, lithium manganate battery) single battery nominal 3.6V (or 3.7V) please choose the polymer 3.7V classification.5. Working temperature: -20-65 degrees Celsius​

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1. Lithium battery protection board specially designed for lithium phosphate, ternary lithium battery, lithium cobalt oxide, and lithium manganate battery packs.2. Adopt mature protection circuit, IC and support disconnection protection, imported high-current internal resistance MOS (single MOS internal resistance 3 milliohms), with complete and stable charging and discharging various protection functions, battery core hardware balancing processing, balancing current Appropriate, balanced heating is reasonable and does not affect battery pack performance.3. Output current: 80A for separate port; 60A for same port4. We have protective boards with two parameters: lithium iron phosphate and polymer. If your battery is lithium iron phosphate with a nominal 3.2V single cell, you need to select lithium iron phosphate 3.2V in the category. If it is polymer (ternary) , cobalt acid, lithium manganate battery) single battery nominal 3.6V (or 3.7V) please choose the polymer 3.7V classification.5. Working temperature: -20-65 degrees Celsius​

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Features 1. Latest IC programming procedure preventing accidentally remove code.2. 4-Channel Wireless Remote Control Duplicator for Cars, Car Sunroofs, Garage Doors, Gate Doors, Alarm Systems, Heating Systems, Home automation e.g. Lighting and etc.3. This is a fixed frequency remote cloner 433mhz for copying 99.99% common fixed & learning code remote controls.4. Clone up to 2 remote signals from 2 different remotes.Specification1. Color: Black2. Material: Plastic3. Button: 4 Buttons4. Size: As picture shown5. Frequency: 433 mhz6. Transmit distance: 50-100m (Open space)7. Operation: 6V DC Battery CR2016 (2x 3V CR2016 Battery included)8. Decoder IC: All learning code/fixed code. (All manufacturers)9. Such As: 2260 (All manufacturers) / 2262 (All manufacturers) / PT2264/ 5326 (All manufacturers) / SC5262/ HT600/ HT680/ HT6207/ HT6010/ HT6012/ HT6014/ SMC918 series/ 527 (All manufacturers) / 1527 (All manufacturers) / 2240 (All manufacturers) and so on.10. Please note: Rolling code and special fixed code can not be cloned.11. Package includes :- 1 x 4-Channel Remote Control (With battery)How to ProgramStep-1 Clear the history code from duplicator1. Press button A and B continuously until LED flash 3 times2. Release button B (Keep pressing button A),and press button B Slowly for 3 times, LED flash3. Release button A,finish code clearance.- If code clearance done properly, short press any button. Light wont flash at all.- If light flash when short press any button clearance process done wrong. Please repeat clearance process again.Step-2 Copy code from original transmitter1. Place the cloner remote and the original remote close together side by side. Make sure they are touching.2. Simultaneously press a button on your original remote and one of the buttons on the clone remote and hold until the LED on the clone remote flashes steadily.3. The Blue LED will first flash 3 times quick, then stops for a second, then flashes steadily.4. Release both buttons. Programming is successful. Copy other buttons in same way.

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Features1. Its work is characterized by side refrigeration and side fever2. Hot and cold on both sides of the temperature difference of 68 degrees3. Connected to the 12-volt power supply cooling piece on both sides there will be difference in temperature, side cold side of the heat, do not long power cooler radiator, otherwise it will cause cooler internal overheating and burning4. These devices must be used in conjunction with a heat sink to avoid burned5. Each device is full inspected and tested6. Fitted with 6-inch insulated leadsSpecification1. Size: 40mm x 40mm2. Operates from 0~15.2V and 0~6A3. Operates Temperature: -30C to 70C4. Max power consumption: 60W5. Material：Semiconductor/ceramic plates4. Package included: 1 x cooler plate moduleInstallationCooling piece is very simple to install and use. Before installation, to find a dry cell, connected to the two leads of the cooler, obviously cold you can feel at one end and the other end of fever, remember that the polarity of the lead and determine a good cooler cold and hot end. If you want to get a bigger system Ling, it is recommended that two cooling mode, with two stack up with the above, a grim absorption following a fever, the experiments prove two refrigeration effect is much better than the single-stage, the condition can choose three, of course, have a large power supply support.

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This 5V USB output converter module is based on the KIS3R33S module specific design, the input voltage 7V to 24V, output voltage 5.01V 2.5A peak output current of 4A continuous output. Able to provide 3A continuous load current. The majority of players professional testing, with high efficiency, ultra-low loss characteristics, beyond lm2596 power module. This module has a USB recognition. This module uses the original Sanyo low ESR filter capacitor voltage as low as possible so that the ripple 30mV, fully capable and linear power comparable. IN-(input negative), IN + (positive input), OUT-(negative output), OUT + (positive output) must be connected to the right, otherwise may cause damage to the module. The USB output converter module has short circuit protection, 5A current automatic protection. Specification 1. Modules nature: Non-isolated buck 2. Rectification: Non-synchronous rectification 3. Input voltage: DC 7V - 24V 4. Output voltage: DC 5V 5. Output current: 4A(short time) 6. Conversion efficiency: 96% (MAX) 7. Switching frequency: 340KHz 8. Output ripple: 30mV(max) 9. Load regulation: +/- 0.5% 10. Voltage regulation: +/- 2.5% 11. Operating temperature: -40 degree C to +85 degree C 12. With overcurrent protection 13. Size: 60 x 21 x 14mm Notice 1. DIY mobile power supply, to achieve 5V output for charging Phone, MP3, MP4, PSP etc. 2. Please connect right as the printed: IN-, IN+, OUT-, OUT+, or the module will be burned 3. May not charge for the IPAD Package included 1 x KIS3R33S USB output converter module

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1. Function of this aluminum heat sink is to cool down the board and make it operate safely2. The aluminum heat sink can reduce the risk of hardware failure because of overheating3. Will cool more LEDs if work with a fan3. Material: Aluminum4. Color: Black5. Weight: 15g6. Size: 40 x 40 x 11mm7. Application: LED, Power IC, Memory, Transistor etc.3. Package included:1 x Aluminum heat sink 40 x 40 x 11mm

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Features1. High efficiency, high torque, low heat generating2. Control the speed of a DC motor with this controller3. With reverse polarity protection, high current protection4. With potentiometer5. With reversible switch6. Speed controller is made with high quality circuit board which ensures a longer service life7. This simple and easy-to-use DC motor speed controller has an stable performance8. The output current of this motor speed controller can be adjusted from 6A to 10A, and it is simple to set9. This motor speed controller uses screw terminals for convenient and quick wiringSpecifications1. Input Voltage: DC 6V-30V2. Output Voltage: Linear with load3. Output Current: 6A-10A4. Power: Max. 200W5. Speed Range: 0% to 100%6. Regulation Method: Potentiometer7. Regulation Type: Regulating Current8. Control Frequency: 16KHz9. Wiring Type: Screw terminal10. Rotary Knob Wire Length: 20cm 11. Brand: Landa tianrui12. Model: LDTR-WG026613. Material: FR-414. Dimensions: 7.4 cm * 4.7 cm* 2.8cm15. Weight: 68 g16. Package included: 1 x PWM DC motor speed controller

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1. Humidity range: 0-1002. Material physical properties: semiconductor3. Output signal: digital4. Working voltage: 3.3V-5V5. Size: 3cm * 1.6cm6. Features: LM393 chip, stable operation, fixed bolt holes for easy installation, dual output mode of the module, simple digital output, more accurate analog output, and adjustable sensitivity

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Features1. Bluetooth+AUX audio input, dual-channel stereo output, just a little sound distortion. 2. You can directly adjust the treble and bass. 3. AMP module has AM interference suppression function, shielding cover power inductor, low noise front stage operational amplifier, you will enjoy a more excellent sound quality experience. 4. Audio amplifier board with over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection. 5. The illustration of each interface is printed on the protective plate, making it easy to install and use even without instructions. Use occasion: This 50W+50W dual-channel Bluetooth audio amplifier board is widely use indoor and outdoor, such as family, party, bar, band, concert, carnival etc.Specification1. Material: ABS plastic 2. Bluetooth version: 5.0 3. Input Mode: Bluetooth / AUX 4. Power Output: 50W x 2 5. Channel: 2 6. Chip: TPA3116D2 (AM interference suppression function) 7. Bluetooth transmission distance: 10m (without occlusion) 8. Adapter speaker: 15-100W, 4 ohm s- 8 ohms 9. Signal to noise ratio: Greater than 90dB 10. Adapted power supply: DC 9-24V/ above 2A 11. Output Power: - 15W x 2 at 12V, 8 ohms - 20W x 2 at 19V, 8 ohms - 30W x 2 at 12V, 4 ohms - 30W x 2 at 24V, 8 ohms - 40W x 2 at 19V, 4 ohms - 50W x 2 at 24V, 4 ohms 12. Size: 110 x 70 x 21mm

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Technical specifications:1. Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/44.1/482. 24-bit DAC output, dynamic range support: 90dB, signal-to-noise ratio support: 85dB3. Fully support FAT16, FAT32 file system, support 32G TF card, support 32G U disk, 64M byte NORFLASH4. A variety of control modes are available. IO control mode, serial port mode, AD button control mode5. The broadcast language insertion function, you can pause the background music that is playing. After the ad is played, return to the background sound to continue playing6. The audio data is sorted by folder, supporting 100 folders at most, and 255 tracks can be assigned to every folder7. 30 levels of volume adjustable, 6 levels of EQ adjustableApplication range:1. Car navigation voice broadcast2. Highway transportation inspection, toll station voice prompt3. Voice prompts for safety inspections at railway stations and bus stations4. Voice prompts for power, communications, and financial business offices5. Voice prompts for vehicle entry and exit channel verification6. Voice prompts for border inspection channels7. Multi-channel voice alarm or equipment operation guidance voice8. Voice notice for safe driving of electric sightseeing cars9. Automatic alarm for mechanical and electrical equipment failure10. Fire alarm prompt11. Automatic broadcast equipment, regular broadcastProduct description:1. Can be directly connected to speakers2. The module can be used alone with the power supply battery, speakers, and buttons, or can be controlled through the serial port, as a module of UNO or any single-chip microcomputer with a serial port3. The module itself perfectly integrates the hard decoding of MP3, WAV and WMA. At the same time, the software supports TF card driver, supports FAT16, FAT32 file system4. Through simple serial port commands, you can complete the functions of playing the specified music and how to play the music. There is no need for cumbersome underlying operations, easy to use, stable and reliable

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1. Voltage: DC 2.5-5.5V. 2. Output Power: 3W + 3W (at 4 ohm). 3. Noise ratio: 90dB. 4. Efficiency: more than 90 percent. 5. 2 channels 3W amplifier with PAM8403. 6. Output is CMOS BTL driver. 7. Cannot change any component parameters to protect IC. 8. The board can also be powered by 5V USB power supply or 4 x 1.5V battery. 9. It is perfect for MP3, MP4 and notebook.

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1. The USB to RS232 converter cable provides simple and easy way to connect universal serial bus (USB) and serial port interface. 2. Via this adapter cable, you can utilize the peripheral with serial port interface in an easy-use environment such as plug the play hot swap function. 3. This adapter is designed for ideal connections to cellular phone, digital camera, modems or ISDN terminal adapter with max. 1 Mbps data transfer rate. 4. Application: Convert USB port to RS232 serial port.

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1. Double decks for 4pcs AA batteries. 2. Easy to connect to other devices with 18cm cable. 3. Able to make 6V battery pack from alkaline cells. 4. Perfect external power source for Arduino system.

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1. Resistance range: 100 ohm - 10K ohm. 2. It is widely used to adjust timer, speed, temperature. 3. For MCU experiment.

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1. Low standby current.through the I2C bus serial input / output. 2. PCF8591 by 3 hardware address pins addressing. Sampling rate PCF8591 I2C bus rate decided. 3. 4 analog inputs programmable as single-ended or differential inputs.Automatic incremental channel selection 4. PCF8591 analog voltage range from VSS to VDD.PCF8591 built-in track and hold circuit. 5. 8-bit successive approximation A / D converter. through an analog output DAC gain. module chip using PCF8951 . 6. Working Voltage : 2.5-6V

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1. Works with official Arduino boards 2. This is an I2C controlled PWM driver board with a built-in clock 3. You can use 3.3V MCU to control and drive the output up to 6V 4. 6 address select pins allow you to connect 62 driver boards to one I2C bus, total 992 channels of PWM output 5. About 1.6KHz frequency modulation PWM output 6. PCA9685 chip is at the center of the board 7. With power input terminal 8. With green power indicator light 9. Convenient to insert total 16 servos at the same time 10. With reverse polarity protection for input 11. Cascade design 12. Put a bulky capacitor on the V+ line 13. Put 220 ohm resistance components onto all PWM output lines

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1. Chip: MAX3232CSE 2. Voltage range: 3 v to 5 v 3. The highest baud rate : not recommended More than 120 KBPS 4. A converter board for electrical levels

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1. Onboard complex frequency decoder chip MT8870 2. Onboard voice input interface 3. Onboard five LED indicators for easy viewing output state 4. Basic pins of the chip have been drawn 5. For Arduino, Raspberry Pi, ARM MCU and more

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1. Material: PCB 2. Working voltage: 3.3 or 5V 3. On-board AMS1117 - 3.3 chip 4. Wireless module operating voltage is 3.3V, while the ordinary 51 single-chip is 5V 5. Connect wireless module with 51 single-chip system board 6. It is for NRF24L01 + wireless module 7. This is a simple socket board which is for NRF24L01 wireless module

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