Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, an MG996R servo motor, a Load Cell, an HC-SR04 Ultrasonic Sensor, an HX711 Bridge Sensor Interface, and an Orange Pi. The circuit is designed to interface these components for various sensing and actuation tasks.

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

MG996R

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

Load Cell - Red/white/black/green

• Description: A sensor used to measure weight or force.
• Pins: E+, A-, E-, A+

HC-SR04 Ultrasonic Sensor

• Description: A sensor used to measure distance using ultrasonic waves.
• Pins: VCC, TRIG, ECHO, GND

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

Orange Pi

• Description: A single-board computer similar to the Raspberry Pi.
• Pins: pin heads 1, pin head 2, pin head 3, pin head 4, pin head 5, pin head 6, Power 5V/2A DC, USB 2.0, 100M Ethernet, USB OTG, HDMI, TF card slot, power switch

Wiring Details

Arduino UNO

• 5V connected to:

  • HX711 - Bridge Sensor Interface (3.3/3.5V Supply)
  • MG996R (VCC)
  • HC-SR04 Ultrasonic Sensor (VCC)

• GND connected to:

  • HX711 - Bridge Sensor Interface (GND - GROUND)
  • HC-SR04 Ultrasonic Sensor (GND)
  • MG996R (GND)

• A0 connected to:

  • HX711 - Bridge Sensor Interface (SCK - CLOCK (IN))

• A1 connected to:

  • HX711 - Bridge Sensor Interface (DATA (OUT))

• D9 connected to:

  • MG996R (SIG)

• D3 connected to:

  • HC-SR04 Ultrasonic Sensor (ECHO)

• D2 connected to:

  • HC-SR04 Ultrasonic Sensor (TRIG)

MG996R

• GND connected to:

  • Arduino UNO (GND)
  • HX711 - Bridge Sensor Interface (GND - GROUND)
  • HC-SR04 Ultrasonic Sensor (GND)

• VCC connected to:

  • Arduino UNO (5V)
  • HX711 - Bridge Sensor Interface (3.3/3.5V Supply)
  • HC-SR04 Ultrasonic Sensor (VCC)

• SIG connected to:

  • Arduino UNO (D9)

Load Cell - Red/white/black/green

• E+ connected to:

  • HX711 - Bridge Sensor Interface (E+)

• A- connected to:

  • HX711 - Bridge Sensor Interface (A-)

• E- connected to:

  • HX711 - Bridge Sensor Interface (E-)

• A+ connected to:

  • HX711 - Bridge Sensor Interface (A+)

HC-SR04 Ultrasonic Sensor

• GND connected to:

  • Arduino UNO (GND)
  • HX711 - Bridge Sensor Interface (GND - GROUND)
  • MG996R (GND)

• VCC connected to:

  • Arduino UNO (5V)
  • HX711 - Bridge Sensor Interface (3.3/3.5V Supply)
  • MG996R (VCC)

• TRIG connected to:

  • Arduino UNO (D2)

• ECHO connected to:

  • Arduino UNO (D3)

HX711 - Bridge Sensor Interface

• GND - GROUND connected to:

  • Arduino UNO (GND)
  • HC-SR04 Ultrasonic Sensor (GND)
  • MG996R (GND)

• 3.3/3.5V Supply connected to:

  • Arduino UNO (5V)
  • MG996R (VCC)
  • HC-SR04 Ultrasonic Sensor (VCC)

• SCK - CLOCK (IN) connected to:

  • Arduino UNO (A0)

• DATA (OUT) connected to:

  • Arduino UNO (A1)

• E+ connected to:

  • Load Cell - Red/white/black/green (E+)

• A- connected to:

  • Load Cell - Red/white/black/green (A-)

• E- connected to:

  • Load Cell - Red/white/black/green (E-)

• A+ connected to:

  • Load Cell - Red/white/black/green (A+)

Documented Code

Arduino UNO Code

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

}

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

}

This code is a basic template for the Arduino UNO. The setup function is used to initialize any settings or configurations, and the loop function contains the main code that runs repeatedly.