Arduino UNO and HX711 Load Cell Interface for Precision Weight Measurement
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Circuit Documentation
Summary
This circuit consists of an Arduino UNO microcontroller interfaced with an HX711 Bridge Sensor Interface. The HX711 is used to interface with a load cell, and the Arduino UNO processes the data from the HX711. The circuit is powered by the 5V supply from the Arduino UNO.
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
HX711 - Bridge Sensor Interface
- Description: A precision 24-bit analog-to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor.
- Pins: E+, E-, A-, A+, B-, B+, GND - GROUND, DATA (OUT), SCK - CLOCK (IN), 3.3/3.5V Supply
Wiring Details
Arduino UNO
- GND: Connected to GND - GROUND of HX711
- D2: Connected to DATA (OUT) of HX711
- D3: Connected to SCK - CLOCK (IN) of HX711
- 5V: Connected to 3.3/3.5V Supply of HX711
HX711 - Bridge Sensor Interface
- GND - GROUND: Connected to GND of Arduino UNO
- DATA (OUT): Connected to D2 of Arduino UNO
- SCK - CLOCK (IN): Connected to D3 of Arduino UNO
- 3.3/3.5V Supply: Connected to 5V of Arduino UNO
Code Documentation
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:
}
documentation.txt
This documentation provides a comprehensive overview of the circuit, including a summary, detailed component descriptions, wiring details, and the code used in the Arduino UNO.