Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as a load cell, battery, LEDs, weighing sensor module, Arduino UNO, motor driver, DC motor, and an RTC module. The circuit is designed to interface these components with an Arduino UNO microcontroller, which controls the operation of the entire system. The document includes a component list, wiring details, and the embedded code used in the microcontroller.

Component List

Load Cell - Red/white/black/green

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

Battery 18650

• Description: A rechargeable lithium-ion battery.
• Pins: +, -

LED: Two Pin (red)

• Description: A red LED used for indication.
• Pins: cathode, anode

LED: Two Pin (green)

• Description: A green LED used for indication.
• Pins: cathode, anode

HX711 Weighing Sensor Module

• Description: A sensor module used to interface with the load cell.
• Pins: B-, B+, A-, A+, E-, E+, VCC, CK/TX, DO/RX, GND

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

• Description: A motor driver used to control the DC motor.
• Pins: B1, B2, A1, EN_B, EN_A, A2, GND, VCC, +, -, MPIN_1, MPIN_2, MPIN_3, MPIN_4

DC Motor

• Description: A DC motor used for mechanical movement.
• Pins: pin 1, pin 2

RTC

• Description: A real-time clock module used for timekeeping.
• Pins: VCC, GND, CLK, DAT, RST

Wiring Details

Load Cell - Red/white/black/green

• E+ connected to E+ of HX711 Weighing Sensor Module
• A- connected to E- of HX711 Weighing Sensor Module
• E- connected to A+ of HX711 Weighing Sensor Module
• A+ connected to A- of HX711 Weighing Sensor Module

Battery 18650

• + connected to + of L293D Motor Driver
• - connected to - of L293D Motor Driver

LED: Two Pin (red)

• cathode connected to GND of Arduino UNO
• anode connected to D6 of Arduino UNO

LED: Two Pin (green)

• cathode connected to GND of Arduino UNO
• anode connected to D7 of Arduino UNO

HX711 Weighing Sensor Module

• VCC connected to 5V of Arduino UNO
• GND connected to GND of Arduino UNO
• CK/TX connected to D5 of Arduino UNO
• DO/RX connected to D4 of Arduino UNO

Arduino UNO

• 5V connected to VCC of HX711 Weighing Sensor Module, L293D Motor Driver, and RTC
• GND connected to GND of HX711 Weighing Sensor Module, RTC, and LEDs
• A4 connected to DAT of RTC
• A5 connected to CLK of RTC
• D10 connected to EN_A of L293D Motor Driver
• D9 connected to A2 of L293D Motor Driver
• D8 connected to A1 of L293D Motor Driver
• D7 connected to anode of green LED
• D6 connected to anode of red LED
• D5 connected to CK/TX of HX711 Weighing Sensor Module
• D4 connected to DO/RX of HX711 Weighing Sensor Module

L293D Motor Driver

• VCC connected to 5V of Arduino UNO
• GND connected to GND of Arduino UNO
• EN_A connected to D10 of Arduino UNO
• A2 connected to D9 of Arduino UNO
• A1 connected to D8 of Arduino UNO
• MPIN_1 connected to pin 1 of DC Motor
• MPIN_2 connected to pin 2 of DC Motor
• + connected to + of Battery 18650
• - connected to - of Battery 18650

DC Motor

• pin 1 connected to MPIN_1 of L293D Motor Driver
• pin 2 connected to MPIN_2 of L293D Motor Driver

RTC

• VCC connected to 5V of Arduino UNO
• GND connected to GND of Arduino UNO
• CLK connected to A5 of Arduino UNO
• DAT connected to A4 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:

}

This concludes the documentation for the circuit. The wiring details and code provided should help in understanding and replicating the circuit.