Circuit Documentation

Summary

This document provides a detailed overview of a complex circuit involving multiple microcontrollers, sensors, motors, and other components. The circuit is designed to interface various sensors and actuators with microcontrollers to perform specific tasks. The documentation includes a component list, wiring details, and the embedded code used in the microcontrollers.

Component List

Arduino Mega 2560

• Description: A microcontroller board based on the ATmega2560.
• Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D21/SCL, D20/SDA, D19/RX1, D18/TX1, D17 PWM/RX2, D16 PWM/TX2, D15/RX3, D14/TX3, D0 RX0, D1 TX0, D2-D13 PWM, AREF, SDA, SCL, D22-D53.

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13.

Stepper Motor (Bipolar)

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

MG996R

• Description: A high-torque servo motor.
• Pins: GND, VCC, SIG.

Servo

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

Raspberry Pi 5

• Description: A single-board computer.
• Pins: Type-C, Micro HDMI 1, Micro HDMI 2, Camera 1, Camera 2, PoE, Fan, PCIe, USB 3.0, USB 2.0, Ethernet, 5V, GND, 3.3v, GPIO 0-27.

HC-SR04 Ultrasonic Sensor

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

HC-SR501 Motion Sensor

• Description: A PIR motion sensor.
• Pins: GND, OUT, VCC.

Load Cell - Red/white/black/green

• Description: A load cell for measuring weight.
• Pins: E+, A-, E-, A+.

Stepper Driver

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

Bi-Directional Logic Level Converter

• Description: A logic level converter for interfacing different voltage levels.
• Pins: HV1, HV2, HV, GND, HV3, HV4, LV1, LV2, LV, LV3, LV4.

Microphone

• Description: A USB microphone.
• Pins: USB.

OAK-D

• Description: An AI camera.
• Pins: USB, Power.

HX711 - Bridge Sensor Interface

• Description: An interface for bridge sensors like load cells.
• Pins: E+, E-, A-, A+, B-, B+, GND - GROUND, DATA (OUT), SCK - CLOCK (IN), 3.3/3.5V Supply.

Power Supply

• Description: A power supply unit.
• Pins: 12V, 5V, GND.

LED Light Strips (Violet)

• Description: LED light strips.
• Pins: VCC, GND.

LCD

• Description: A liquid crystal display.
• Pins: HDMI, USB.

Wiring Details

Arduino Mega 2560

• GND: Connected to GND of stepper drivers, MG996R, Servo, and Bi-Directional Logic Level Converter.
• 5V: Connected to VCC of Servo.
• D0 RX0: Connected to HV1 of Bi-Directional Logic Level Converter.
• D2 PWM: Connected to DIR+ of stepper driver.
• D3 PWM: Connected to PUL+ of stepper driver.
• D4 PWM: Connected to ENA- of stepper driver.
• D5 PWM: Connected to ENA- of another stepper driver.
• D6 PWM: Connected to DIR+ of another stepper driver.
• D7 PWM: Connected to PUL+ of another stepper driver.
• D8 PWM: Connected to SIG of MG996R.
• D9 PWM: Connected to SIG of another MG996R.
• D10 PWM: Connected to pulse of Servo.

Arduino UNO

• 5V: Connected to HV of Bi-Directional Logic Level Converter.
• D8: Connected to OUT of HC-SR501 Motion Sensor.
• D7: Connected to SCK - CLOCK (IN) of HX711 - Bridge Sensor Interface.
• D6: Connected to DATA (OUT) of HX711 - Bridge Sensor Interface.
• D5: Connected to TRIG of HC-SR04 Ultrasonic Sensor.
• D4: Connected to ECHO of HC-SR04 Ultrasonic Sensor.
• D3: Connected to TRIG of another HC-SR04 Ultrasonic Sensor.
• D2: Connected to ECHO of another HC-SR04 Ultrasonic Sensor.

Stepper Motor (Bipolar)

• D: Connected to B- of stepper driver.
• B: Connected to B+ of stepper driver.
• C: Connected to A+ of stepper driver.
• A: Connected to A- of stepper driver.

MG996R

• GND: Connected to GND of stepper driver and Power Supply.
• VCC: Connected to 5V of Power Supply.
• SIG: Connected to D8 PWM of Arduino Mega 2560.

Servo

• gnd: Connected to GND of Arduino Mega 2560.
• vcc: Connected to 5V of Arduino Mega 2560.
• pulse: Connected to D10 PWM of Arduino Mega 2560.

Raspberry Pi 5

• Micro HDMI 1: Connected to HDMI of LCD.
• USB 3.0: Connected to USB of LCD and OAK-D.
• USB 2.0: Connected to USB of Microphone.
• GND: Connected to GND of Bi-Directional Logic Level Converter.
• 3.3v: Connected to LV of Bi-Directional Logic Level Converter.
• GPIO 14: Connected to LV1 of Bi-Directional Logic Level Converter.

HC-SR04 Ultrasonic Sensor

• VCC: Connected to 3.3/3.5V Supply of HX711 - Bridge Sensor Interface.
• TRIG: Connected to D5 of Arduino UNO.
• ECHO: Connected to D4 of Arduino UNO.
• GND: Connected to GND of HX711 - Bridge Sensor Interface.

HC-SR501 Motion Sensor

• GND: Connected to GND of HX711 - Bridge Sensor Interface.
• OUT: Connected to D8 of Arduino UNO.
• VCC: Connected to 3.3/3.5V Supply of HX711 - Bridge Sensor Interface.

Load Cell - Red/white/black/green

• E+: Connected to E+ of HX711 - Bridge Sensor Interface.
• A-: Connected to A- of HX711 - Bridge Sensor Interface.
• E-: Connected to E- of HX711 - Bridge Sensor Interface.
• A+: Connected to A+ of HX711 - Bridge Sensor Interface.

Stepper Driver

• ENA: Connected to GND of Power Supply.
• DIR-: Connected to GND of Power Supply.
• PUL-: Connected to GND of Power Supply.
• GND: Connected to GND of Power Supply.
• DIR+: Connected to D2 PWM of Arduino Mega 2560.
• PUL+: Connected to D3 PWM of Arduino Mega 2560.
• ENA-: Connected to D4 PWM of Arduino Mega 2560.
• B-: Connected to D of Stepper Motor.
• B+: Connected to B of Stepper Motor.
• A-: Connected to A of Stepper Motor.
• A+: Connected to C of Stepper Motor.
• VCC: Connected to 12V of Power Supply.

Bi-Directional Logic Level Converter

• GND: Connected to GND of Arduino Mega 2560 and Raspberry Pi 5.
• HV: Connected to 5V of Arduino UNO.
• LV: Connected to 3.3v of Raspberry Pi 5.
• HV1: Connected to D0 RX0 of Arduino Mega 2560.
• LV1: Connected to GPIO 14 of Raspberry Pi 5.

Microphone

• USB: Connected to USB 2.0 of Raspberry Pi 5.

OAK-D

• USB: Connected to USB 3.0 of Raspberry Pi 5.

HX711 - Bridge Sensor Interface

• 3.3/3.5V Supply: Connected to VCC of