Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, an L293D motor driver, two motors with reducers, a Flysky receiver, and a power supply from two 18650 Li-ion batteries. The circuit is designed to control the motors using signals from the Flysky receiver, with the Arduino UNO acting as the central controller.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

L293D

• Description: A quadruple high-current half-H driver designed to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors.
• Pins: M1A, M1B, M1IN1, EN1, M1IN2, M2IN2, M2IN1, EN2, M2B, M2A, V+, V-

Motor with Reducer (Motor 1)

• Description: A DC motor with a gear reducer.
• Pins: 3 - 6 VCC, GND

Motor with Reducer (Motor 2)

• Description: A DC motor with a gear reducer.
• Pins: 3 - 6 VCC, GND

18650 Li-ion Battery x 2

• Description: A pair of 18650 Li-ion batteries providing power to the circuit.
• Pins: +, -

Flysky Receiver

• Description: A receiver module for Flysky remote control systems.
• Pins: CH1, CH2, CH3, CH4, CH5, CH6, B/VCC, VCC, GND

Wiring Details

Arduino UNO

• 5V connected to VCC of Flysky Receiver
• GND connected to GND of Flysky Receiver
• D11 connected to EN1 of L293D
• D10 connected to EN2 of L293D
• D9 connected to M2IN1 of L293D
• D8 connected to M2IN2 of L293D
• D7 connected to M1IN1 of L293D
• D6 connected to M1IN2 of L293D
• D2 connected to CH2 of Flysky Receiver

L293D

• EN1 connected to D11 of Arduino UNO
• EN2 connected to D10 of Arduino UNO
• M2IN1 connected to D9 of Arduino UNO
• M2IN2 connected to D8 of Arduino UNO
• M1IN1 connected to D7 of Arduino UNO
• M1IN2 connected to D6 of Arduino UNO
• M1A connected to 3 - 6 VCC of Motor 1
• M1B connected to GND of Motor 1
• M2A connected to 3 - 6 VCC of Motor 2
• M2B connected to GND of Motor 2
• V+ connected to + of 18650 Li-ion Battery x 2
• V- connected to - of 18650 Li-ion Battery x 2

Motor with Reducer (Motor 1)

• 3 - 6 VCC connected to M1A of L293D
• GND connected to M1B of L293D

Motor with Reducer (Motor 2)

• 3 - 6 VCC connected to M2A of L293D
• GND connected to M2B of L293D

18650 Li-ion Battery x 2

• + connected to V+ of L293D
• - connected to V- of L293D

Flysky Receiver

• VCC connected to 5V of Arduino UNO
• GND connected to GND of Arduino UNO
• CH2 connected to D2 of Arduino UNO

Documented Code

Arduino UNO Code (sketch.ino)

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

}

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

}

Additional Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including the components used, their connections, and the code running on the Arduino UNO.