Circuit Documentation

Summary

This circuit is designed to control a pair of DC motors using BTS7960 motor drivers, which are interfaced with an Arduino Uno R3 microcontroller. The circuit also includes a servo motor controlled by the Arduino, which receives its signal from an RC receiver. Power is supplied to the circuit by multiple lipo batteries, and a 24/12V buck converter is used to step down the voltage for certain components. A rocker switch is used to control the power to a 40mm 12V fan, which is powered by a separate 9V battery.

Component List

DC Motor

• Description: A standard DC motor used for rotational motion.
• Pins: pin 1, pin 2

RC Receiver 6 Channels

• Description: A 6-channel radio control receiver for receiving signals from an RC transmitter.
• Pins: CH1, VCC, GND, CH2, CH3, CH4, CH5, CH6, Bind

Lipo Battery 2200mAh 30C

• Description: A rechargeable lithium polymer battery with a capacity of 2200mAh and a discharge rate of 30C.
• Pins: VCC, GND

40mm Fan 12V

• Description: A 12V fan used for cooling purposes.
• Pins: +12V, -12V

9V Battery

• Description: A standard 9V battery used for providing power.
• Pins: +, -

Rocker Switch

• Description: A switch used to control the power state of a circuit.
• Pins: output, input

Servo

• Description: A rotary actuator or linear actuator that allows for precise control of angular or linear position.
• Pins: gnd, vcc, pulse

BTS7960 Motor Driver

• Description: A high-power motor driver capable of driving high current loads.
• Pins: Pin 1 to Pin 12

Arduino Uno R3

• Description: A microcontroller board based on the ATmega328P.
• Pins: USB Port, Power Jack, Not Connected, IOREF, RESET, 3.3V, 5V, GND, VIN, A0 to A5, SCL, SDA, AREF, digital pins 0 to 13

24/12V Buck Converter

• Description: A DC-DC converter used to step down voltage from 24V to 12V.
• Pins: VIN+, VIN-, 5V, GND

Wiring Details

DC Motor

• pin 1: Connected to BTS7960 Motor Driver Pin 10
• pin 2: Connected to BTS7960 Motor Driver Pin 9

RC Receiver 6 Channels

• VCC: Connected to Arduino Uno R3 5V
• GND: Connected to Arduino Uno R3 GND
• CH1: Connected to Arduino Uno R3 pin 9
• CH2: Connected to Arduino Uno R3 pin 10
• CH3: Connected to Servo pulse

Lipo Battery 2200mAh 30C

• VCC: Connected to Arduino Uno R3 VIN, BTS7960 Motor Driver Pin 12, and 24/12V Buck Converter VIN+
• GND: Connected to Arduino Uno R3 GND, BTS7960 Motor Driver Pin 11, and 24/12V Buck Converter VIN-

40mm Fan 12V

• +12V: Connected to Rocker Switch output
• -12V: Connected to 9V Battery -

9V Battery

• +: Connected to Rocker Switch input
• -: Connected to 40mm Fan 12V -12V

Rocker Switch

• input: Connected to 9V Battery +
• output: Connected to 40mm Fan 12V +12V

Servo

• vcc: Connected to 24/12V Buck 5V
• gnd: Connected to Arduino Uno R3 GND
• pulse: Connected to RC Receiver 6 Channels CH3

BTS7960 Motor Driver

• Pin 1: Connected to Arduino Uno R3 GND
• Pin 2: Connected to Arduino Uno R3 pin 8
• Pin 3: Connected to Arduino Uno R3 pin 7
• Pin 4: Connected to Arduino Uno R3 pin 6
• Pin 5: Connected to 24/12V Buck 5V
• Pin 6: Connected to Arduino Uno R3 pin 5
• Pin 7: Connected to Arduino Uno R3 pin 4
• Pin 8: Connected to Arduino Uno R3 pin 3
• Pin 9: Connected to DC Motor pin 2
• Pin 10: Connected to DC Motor pin 1
• Pin 11: Connected to Lipo Battery 2200mAh 30C GND
• Pin 12: Connected to Lipo Battery 2200mAh 30C VCC

Arduino Uno R3

• 3.3V: Not connected
• 5V: Connected to RC Receiver 6 Channels VCC
• GND: Connected to 24/12V Buck GND, BTS7960 Motor Driver Pin 1, Servo gnd, RC Receiver 6 Channels GND
• VIN: Connected to Lipo Battery 2200mAh 30C VCC
• Digital Pins 3-8: Connected to BTS7960 Motor Driver Pins 8-3 respectively
• Digital Pins 9-11: Connected to RC Receiver 6 Channels CH1-CH3 respectively

24/12V Buck Converter

• VIN+: Connected to Lipo Battery 2200mAh 30C VCC
• VIN-: Connected to Lipo Battery 2200mAh 30C GND
• 5V: Connected to BTS7960 Motor Driver Pin 5, Servo vcc
• GND: Connected to Arduino Uno R3 GND

Documented Code

Arduino Uno R3

• File: sketch.ino

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

• File: documentation.txt

(No additional documentation provided)