Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with multiple servos, a stepper motor, an ultrasonic sensor, a 16-channel PWM servo driver, a stepper driver, and a step-down buck converter. The circuit is designed to control the servos and stepper motor while receiving distance measurements from the ultrasonic sensor.

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

Servo

• Description: A standard servo motor.
• Pins: gnd, vcc, pulse

16-Channel PWM Servo Driver

• Description: A driver board to control up to 16 servos using PWM signals.
• Pins: V+, VCC, SDA, SCL, OE, GND, Vin+, Vin-, PWM1, PWM2, PWM3, PWM4, PWM5, PWM6, PWM7, PWM8, PWM9, PWM10, PWM11, PWM12, PWM13, PWM14, PWM15, PWM16

Stepper Driver

• Description: A driver for controlling a bipolar stepper motor.
• Pins: ENA -, ENA +, DIR -, DIR+, PUL -, PUL +, B-, B+, A-, A+, GND, VCC

Stepper Motor (Bipolar)

• Description: A bipolar stepper motor.
• Pins: D, B, C, A

2.1mm Barrel Jack with Terminal Block

• Description: A power input jack with terminal block.
• Pins: POS, NEG

Ultrasonic Sensor

• Description: A sensor for measuring distance using ultrasonic waves.
• Pins: +VCC, Trigger, Echo, GND

Step Down Buck Converter

• Description: A DC-DC converter to step down voltage.
• Pins: IN +, IN - GND, OUT +, OUT - GND

Wiring Details

Arduino UNO

• 5V: Connected to +VCC of Ultrasonic Sensor and VCC of 16-Channel PWM Servo Driver
• GND: Connected to GND of Ultrasonic Sensor, GND of Stepper Driver, and OUT - GND of Step Down Buck Converter
• Vin: Connected to VCC of Stepper Driver and OUT + of Step Down Buck Converter
• A4: Connected to SDA of 16-Channel PWM Servo Driver
• A5: Connected to SCL of 16-Channel PWM Servo Driver
• D9: Connected to Trigger of Ultrasonic Sensor
• D8: Connected to Echo of Ultrasonic Sensor

Servo (6 instances)

• gnd: Connected to GND of 16-Channel PWM Servo Driver
• vcc: Connected to V+ of 16-Channel PWM Servo Driver
• pulse: Connected to PWM4, PWM5, PWM6, PWM7, PWM8, PWM3 of 16-Channel PWM Servo Driver

16-Channel PWM Servo Driver

• VCC: Connected to 5V of Arduino UNO
• GND: Connected to GND of Arduino UNO, GND of Stepper Driver, and OUT - GND of Step Down Buck Converter
• SDA: Connected to A4 of Arduino UNO
• SCL: Connected to A5 of Arduino UNO
• V+: Connected to vcc of all Servo instances
• PWM4: Connected to pulse of Servo
• PWM5: Connected to pulse of Servo
• PWM6: Connected to pulse of Servo
• PWM7: Connected to pulse of Servo
• PWM8: Connected to pulse of Servo
• PWM3: Connected to pulse of Servo

Stepper Driver

• ENA -: Connected to GND of Arduino UNO
• DIR -: Connected to GND of Arduino UNO
• GND: Connected to GND of Arduino UNO and OUT - GND of Step Down Buck Converter
• VCC: Connected to Vin of Arduino UNO and OUT + of Step Down Buck Converter
• B-: Connected to A of Stepper Motor
• B+: Connected to C of Stepper Motor
• A-: Connected to B of Stepper Motor
• A+: Connected to D of Stepper Motor

Stepper Motor (Bipolar)

• A: Connected to B- of Stepper Driver
• C: Connected to B+ of Stepper Driver
• B: Connected to A- of Stepper Driver
• D: Connected to A+ of Stepper Driver

2.1mm Barrel Jack with Terminal Block

• POS: Connected to IN + of Step Down Buck Converter
• NEG: Connected to IN - GND of Step Down Buck Converter

Ultrasonic Sensor

• +VCC: Connected to 5V of Arduino UNO
• GND: Connected to GND of Arduino UNO
• Trigger: Connected to D9 of Arduino UNO
• Echo: Connected to D8 of Arduino UNO

Step Down Buck Converter

• IN +: Connected to POS of 2.1mm Barrel Jack with Terminal Block
• IN - GND: Connected to NEG of 2.1mm Barrel Jack with Terminal Block
• OUT +: Connected to VCC of Stepper Driver and Vin of Arduino UNO
• OUT - GND: Connected to GND of Arduino UNO and GND of Stepper Driver

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 documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the Arduino UNO microcontroller.