HX711 Weighing Special AD Load Cell Sensor module

40(inc. GST)

  • Dual-channel 24-bit precision A/D weight pressure sensor load cell amplifier and ADC.
  • Selectable differential input channels for simultaneous or independent load cell connection.
  • On-chip active low-noise PGA with selectable gains of 32, 64, and 128.
  • 24-bit measurement resolution for high-precision weight readings.
  • Four-wire Wheatstone bridge connection for load cells.
  • Color-coded load cell wires (red, black, white, green, yellow).
  • Optional yellow wire for grounding and EMI shielding.
Availability: 2 in stock SKU: BIM060 Categories: , , ,

Description

The 24-bit HX711 Weighing Sensor Module is a versatile, high-performance weight scale sensor designed for precise weight measurement applications. It serves as a compatible and improved option for the Arduino UNO R3, offering enhanced functionality and accuracy.

The HX711 Module is a small breakout board that integrates a dual-channel 24-bit precision A/D weight pressure sensor load cell amplifier and ADC. It allows for easy measurement of weight by reading the changes in load cell resistance when connected to a microcontroller. The module features a selectable gain PGA with 32, 64, and 128 options to amplify signals, an on-chip oscillator for timing without external components, and a power-on-reset circuit. With a measurement resolution of 24 bits, it provides highly accurate weight measurements.

Load cells are connected to the module using a four-wire Wheatstone bridge, typically color-coded as red, black, white, green, and yellow. The yellow wire serves as an optional input for grounding and shielding against external electromagnetic interference (EMI), but it is not directly connected to the load cell strain gauge. It is important to refer to the load cell’s specific documentation for accurate color-coding information.

Pinouts:

Analog Side:

  1. E+: Excitation positive.
  2. E-: Excitation negative.
  3. A-: Channel A Negative Input.
  4. A+: Channel A positive input.
  5. B-: Channel B Negative Input.
  6. B+: Channel B Positive Input.

Digital Side :

  1. GND: 0V/Ground Power Connection.
  2. DT: Data IO Connection.
  3. SCK: Serial Clock Input.
  4. VCC: power input.

Specification

Output Sensitivity 1.0 ± 0.1 mV/V
Input Channels Two selectable differential input channels
On-Chip Active Low-Noise PGA Selectable gains: 32, 64, and 128
On-Chip Oscillator Internal oscillator requiring no external components
On-Chip Power-On-Reset Ensures proper initialization and stability during power-up
Measurement Resolution 24 bits
Load Cell Connection Four-wire Wheatstone bridge
Red: Excitation+ or VCC
Black: Excitation- or GND
White: Amplifier+, Signal+, or Output+
Green: A-, S-, or O-
Yellow: Shield
Yellow Wire (YLW Pin) Optional input for grounding and shielding against EMI

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