Description :

•  The SparkFun Load Cell Amplifier is a board for reading load cells to measure weight
  Features changes based on customer feedback, including separate analog and digital supply, and a 3.3uH inductor and a 0.1uF filter capacitor
  Uses a two-wire interface (Clock and Data) for communication with microcontroller
  Numerous libraries available for easy data reading
  Load cells use a four-wire Wheatstone bridge configuration to connect to the HX711
  Load cell wires are commonly colored RED (Excitation+ or VCC), BLK (Excitation- or GND), WHT (Amplifier-, Signal- or Output-), GRN (A+, S+ or O+) and YLW (Shield)
  Yellow wire acts as an optional input for grounding and shielding against EMI
  Note: Load cell color coding may have slight variations.

Specifications:

• Operation Voltage: 2.7V–5V
  Operation Current: < 1.5mA
  Selectable 10SPS or 80SPS output data rate
  Simultaneous 50 and 60Hz supply rejection