M5Stack Mini Weight Unit (HX711) Load Cell Amplifier

Sale price £3
incl. VAT
excl. VAT
Only 9 units left

WEIGHT integrates a HX711 24 bits A/D chip that is specifically designed for electronic weighing device.

The input multiplexer selects either Channel A or B differential input to the low-noise programmable gain amplifier (PGA). Channel "A" can be programmed with a gain of 128 or 64, corresponding to a full-scale differential input voltage of ±20mV or ±40mV respectively.

when a 5V supply is connected to AVDD analog power supply pin.

Channel B has a fixed gain of 32. There is no programming needed for the internal registers. All controls to the HX711 are through the pins.

In the test, we have this Unit channel A to connect a pressure sensor. Then, use M5Core screen to display the weight data.

Product Features

  • Two selectable differential input channels
  • On-chip active low noise PGA with selectable gain of 32, 64 and 128
  • On-chip power supply regulator for load-cell and ADC analog power supply
  • On-chip oscillator requiring no external component with optional external crystal
  • On-chip power-on-reset
  • Simple digital control and serial interface: pin-driven controls, no programming needed
  • Selectable 10SPS or 80SPS output data rate
  • Simultaneous 50 and 60Hz supply rejection
  • Current consumption including on-chip analog power supply regulator: normal operation < 1.5mA, power down < 1uA
  • Operation supply voltage range: 2.6 ~ 5.5V
  • Operation temperature range: -40 ~ +85℃
  • 16 pin SOP-16 package
  • Program Platform: Arduino, UIFlow(Blockly, Python)
  • Two Lego-compatible holes


  • 1x WEIGHT Unit
  • 1x Grove Cable


  • Micro weight meter
  • Kitchen Scale


Resources Parameter
Operating Voltage g
Operating Current g
Net weight 8g
Gross weight 20g
Product Size 40*24*12mm
Package Size 67*53*12mm


  • M5Stack Smart Supermarket
    Thanks for the source code and project information provided by @沧海

    Payment & Accreditations

    Payment methods
    Amazon American Express Maestro Mastercard PayPal Visa

    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.