Circuit Documentation

Summary

This circuit involves an Arduino Mega 2560 microcontroller interfaced with a SparkFun Load Cell Amplifier (HX711) and a Load Cell. The Arduino Mega 2560 provides power and reads data from the HX711, which in turn amplifies the signal from the Load Cell. This setup is typically used for precise weight measurements.

Component List

Arduino Mega 2560

• Description: A microcontroller board based on the ATmega2560.
• Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D0-D53, AREF, SDA, SCL

SparkFun Load Cell Amplifier - HX711

• Description: A small breakout board for the HX711 IC that allows you to easily read load cells to measure weight.
• Pins: VDD, VCC, DAT, SCK, GND, B+, B-, A+, A-, AVDD

Load Cell - Red/white/black/green

• Description: A sensor that measures force or weight.
• Pins: E+, A-, E-, A+

Wiring Details

Arduino Mega 2560

• 5V: Connected to VDD and VCC of the SparkFun Load Cell Amplifier - HX711
• GND: Connected to GND of the SparkFun Load Cell Amplifier - HX711
• A2: Connected to DAT of the SparkFun Load Cell Amplifier - HX711
• A3: Connected to SCK of the SparkFun Load Cell Amplifier - HX711

SparkFun Load Cell Amplifier - HX711

• VDD: Connected to 5V of the Arduino Mega 2560
• VCC: Connected to 5V of the Arduino Mega 2560
• GND: Connected to GND of the Arduino Mega 2560
• DAT: Connected to A2 of the Arduino Mega 2560
• SCK: Connected to A3 of the Arduino Mega 2560
• A+: Connected to A+ of the Load Cell
• A-: Connected to A- of the Load Cell
• GND: Connected to E- of the Load Cell
• AVDD: Connected to E+ of the Load Cell

Load Cell - Red/white/black/green

• A+: Connected to A+ of the SparkFun Load Cell Amplifier - HX711
• A-: Connected to A- of the SparkFun Load Cell Amplifier - HX711
• E-: Connected to GND of the SparkFun Load Cell Amplifier - HX711
• E+: Connected to AVDD of the SparkFun Load Cell Amplifier - HX711

Documented 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