# M5Stack Mini Weight Unit (HX711) Load Cell Amplifier

**Type:** Product page · **SKU:** CE07679 · **Brand:** [M5Stack](https://core-electronics.com.au/brands/m5stack-australia)
**Page:** https://core-electronics.com.au/m5stack-mini-weight-unit-hx711-load-cell-amplifier.html ([markdown](https://core-electronics.com.au/m5stack-mini-weight-unit-hx711-load-cell-amplifier.html.md))

The M5Stack Mini Weight Unit Load Cell Amplifier integrates an HX711, 24-bit A/D chip that is specifically designed for an electronic weighing device.

## Pricing

- **Price:** $7.55 (inc GST) — $6.86 AUD, exc GST
- **Quantity discounts:** 10+ $6.59 (exc GST) · 25+ $6.38 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 300 more in 8–19 days.

## Description

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.

![](https://core-electronics.com.au/media/wysiwyg/product_images/mini-weight-unit-u030-desc-img-2.jpg)

![](https://core-electronics.com.au/media/wysiwyg/product_images/mini-weight-unit-u030-desc-img-1.jpg)

**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°C ~ +85°C
- 16 pin SOP-16 package
- Program Platform: Arduino, UIFlow(Blockly, Python)
- Two Lego-compatible holes

**Include**

- 1x WEIGHT Unit
    1x Grove Cable

**Applications**

- Micro weight meter
- Kitchen Scale

**Specification**

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

**Documents**

- [easyloader](https://docs.m5stack.com/#/en/unit/weight?id=easyloader)
- [schematic](https://docs.m5stack.com/#/en/unit/weight?id=schematic)
- [related-link](https://docs.m5stack.com/#/en/unit/weight?id=related-link)
- [example](https://docs.m5stack.com/#/en/unit/weight?id=example)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/m/i/mini-weight-unit-u030-1.jpg)