Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller, an L293D motor driver shield, multiple motors with reducers, and HC-SR04 ultrasonic sensors. The circuit is powered by two 18650 Li-ion batteries. The Arduino UNO is used to control the motors and read data from the ultrasonic sensors.

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 Motor Driver Shield

• Description: A motor driver shield used to control motors.
• Pins: 5v, GND, A0, A1, A2, A3, A4, A5, M+, M2, M1, M3, M4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, gnd, Aref, ser1, Servo2, +, -, 9v

Motor with Reducer

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

HC-SR04 Ultrasonic Sensor

• Description: An ultrasonic sensor used for distance measurement.
• Pins: VCC, TRIG, ECHO, GND

18650 Li-ion Battery x 2

• Description: Two 18650 Li-ion batteries used to power the circuit.
• Pins: +, -

Wiring Details

Arduino UNO

• No direct connections specified in the net list.

L293D Motor Driver Shield

• 5v: Connected to VCC of both HC-SR04 Ultrasonic Sensors.
• GND: Connected to GND of both HC-SR04 Ultrasonic Sensors and the negative terminal of the 18650 Li-ion Battery.
• A0: Connected to TRIG of the first HC-SR04 Ultrasonic Sensor.
• A1: Connected to ECHO of the first HC-SR04 Ultrasonic Sensor.
• A2: Connected to TRIG of the second HC-SR04 Ultrasonic Sensor.
• A3: Connected to ECHO of the second HC-SR04 Ultrasonic Sensor.
• M+: Connected to the positive terminal of the 18650 Li-ion Battery.
• M2: Connected to 3 - 6 VCC of the second Motor with Reducer.
• M2: Connected to GND of the second Motor with Reducer.
• M1: Connected to 3 - 6 VCC of the first Motor with Reducer.
• M1: Connected to GND of the first Motor with Reducer.
• M3: Connected to 3 - 6 VCC of the third Motor with Reducer.
• M3: Connected to GND of the third Motor with Reducer.
• M4: Connected to 3 - 6 VCC of the fourth Motor with Reducer.
• M4: Connected to GND of the fourth Motor with Reducer.

Motor with Reducer

• First Motor

  • 3 - 6 VCC: Connected to M1 of the L293D Motor Driver Shield.
  • GND: Connected to M1 of the L293D Motor Driver Shield.

• Second Motor

  • 3 - 6 VCC: Connected to M2 of the L293D Motor Driver Shield.
  • GND: Connected to M2 of the L293D Motor Driver Shield.

• Third Motor

  • 3 - 6 VCC: Connected to M3 of the L293D Motor Driver Shield.
  • GND: Connected to M3 of the L293D Motor Driver Shield.

• Fourth Motor

  • 3 - 6 VCC: Connected to M4 of the L293D Motor Driver Shield.
  • GND: Connected to M4 of the L293D Motor Driver Shield.

HC-SR04 Ultrasonic Sensor

• First Sensor

  • VCC: Connected to 5v of the L293D Motor Driver Shield.
  • GND: Connected to GND of the L293D Motor Driver Shield.
  • TRIG: Connected to A0 of the L293D Motor Driver Shield.
  • ECHO: Connected to A1 of the L293D Motor Driver Shield.

• Second Sensor

  • VCC: Connected to 5v of the L293D Motor Driver Shield.
  • GND: Connected to GND of the L293D Motor Driver Shield.
  • TRIG: Connected to A2 of the L293D Motor Driver Shield.
  • ECHO: Connected to A3 of the L293D Motor Driver Shield.

18650 Li-ion Battery x 2

• +: Connected to M+ of the L293D Motor Driver Shield.
• -: Connected to GND of the L293D Motor Driver Shield.

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)