Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Chip Model	HX711
Resolution	24-Bit ADC
Input Channels	2 (Channel A and Channel B)
Operating Voltage	2.6V to 5.5V DC
Refresh Rate	10Hz or 80Hz selectable
Interface Type	Two-wire Serial Interface
Compatible Microcontrollers	Arduino, STM32, ESP8266, ESP32, Raspberry Pi
PCB Dimensions	20mm x 16mm x 3mm
Weight	2.5 grams
Package Contents	1x HX711 Module Board

6 reviews

Anonymous

Mar 21, 2026

Rating: 5/5

Easy to integrate

The two-wire interface saves GPIO pins on my ESP32. Data refresh rate switching between 10Hz and 80Hz is a nice feature depending on whether you need speed or stability.

Anonymous

Mar 18, 2026

Rating: 4/5

Solid performer

Works as advertised. I noticed slight drift if the power supply wasn't regulated well, but that's expected with high-gain sensors. Once powered by a stable 3.3V, it's rock solid.

Anonymous

Mar 14, 2026

Rating: 4/5

Good value, small footprint

Compact size fits easily into tight enclosures. Signal noise is low when properly grounded. Only giving 4 stars because the pin headers were not included, had to solder my own.

Anonymous

Mar 09, 2026

Rating: 5/5

Great for learning

Bought this for a university sensor fusion project. Documentation online is plentiful, and this specific board matches all the tutorials. Highly recommended for beginners.

Anonymous

Mar 07, 2026

Rating: 5/5

Reliable and Accurate

We used ten of these for a student robotics competition. Every single one worked out of the box. The precision is impressive for the price point.

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for DIY Scales

This module works flawlessly with my Arduino project. The 24-bit resolution provides very stable readings for my kitchen scale build. Setup was straightforward using the standard library.

5 FAQ

Q: Can I connect two load cells to this single module?

A: The HX711 has two input channels (A and B). Channel A supports gain settings suitable for full bridge load cells, while Channel B has a fixed gain often used for half-bridge applications. You can technically connect different sensors to each, but for a single scale using four-wire load cells, they are usually wired together into one channel.

Q: How do I switch between 10Hz and 80Hz sampling rates?

A: The sampling rate is selected by the state of the PD_SCK pin when the chip wakes up from power-down. Pulling the pin low selects 10Hz (Channel A), while pulling it high selects 80Hz. Most libraries handle this automatically via configuration functions.

Q: Can this module drive a 5kg load cell directly?

A: Yes, the HX711 is designed to interface directly with standard strain gauge load cells ranging from a few grams up to several kilograms, provided the load cell impedance matches the module's requirements (typically 350 ohm or 1k ohm).

Q: Does this come with the load cell included?

A: No, this listing is for the HX711 amplifier module only. You will need to purchase a compatible load cell separately based on your weight measurement requirements.

Q: Is a 3.3V logic level compatible with this board?

A: Absolutely. The operating voltage range is 2.6V to 5.5V, so it works perfectly with both 3.3V and 5V microcontroller systems without needing a logic level shifter.

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