SparkFun Load Cell Amplifier - HX711

The SparkFun Load Cell Amplifier (HX711) is a precision 24-bit analog-to-digital converter (ADC) designed specifically for weighing scales and load cell measurements. It amplifies the tiny millivolt signals from a load cell so microcontrollers like Arduino, ESP32, or Raspberry Pi can read accurate weight data.

The board is based on the HX711 IC, which is widely used in digital scales.

🔹 Key Features

• 24-bit high-resolution ADC

• Designed for load cells & strain gauges

• Two selectable gain channels (32, 64, 128)

• Simple 2-wire interface (DT & SCK)

• Low power consumption

🔹 Typical Specifications

• Operating voltage: 2.6V – 5.5V

• Gain options: 32, 64, 128

• Sampling rate: 10Hz or 80Hz

• Interface: Digital (Clock + Data)

• Compatible with 1kg, 5kg, 10kg, 20kg load cells, etc.

🔹 Applications

• Digital weighing scales

• Smart kitchen scales

• Industrial weight monitoring

• Force measurement systems

• IoT smart measurement projects