Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Chip Model	HX711
Resolution	24-Bit
Input Channels	2 (Channel A and Channel B)
Operating Voltage	2.6V to 5.5V DC
Sampling Rate	10Hz or 80Hz (Selectable)
Interface	Two-wire Serial Interface
Shielding	Metal Shielded Case for Noise Reduction
Compatibility	Arduino, Raspberry Pi, STM32
Dimensions	20mm x 16mm x 8mm
Application	Electronic Scales, Pressure Sensors, Force Measurement

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Stable readings, compact size

Great little board. The 24-bit resolution provides very stable readings for my pressure sensor project. Only giving 4 stars because the pin headers were slightly loose out of the box, but easy to solder tighter.

Anonymous

Mar 25, 2026

Rating: 4/5

Solid performance

Integration with Raspberry Pi was smooth. The sampling rate selection via code is a nice feature. It runs cool even after hours of continuous operation.

Anonymous

Mar 21, 2026

Rating: 5/5

Perfect for DIY Scale Projects

This shielded module works flawlessly with my Arduino Uno. The noise reduction is noticeable compared to the bare board versions I used previously. Setup was straightforward using standard libraries.

Anonymous

Mar 18, 2026

Rating: 5/5

Great for university projects

Used this for my final year instrumentation project. The accuracy is impressive for the price point. The metal case feels durable and protects the chip well.

Anonymous

Mar 14, 2026

Rating: 5/5

Good value for money

Works exactly as described. The dual channel support is useful if you need to switch between different load cells without changing hardware. Documentation online is plentiful.

Anonymous

Mar 02, 2026

Rating: 5/5

Excellent shielding

I was experiencing erratic data with an unshielded module in my workshop environment. This shielded version solved the interference issues immediately. Highly recommended for industrial environments.

5 FAQ

Q: What is the difference between Channel A and Channel B?

A: Channel A has a gain of 128 or 64, suitable for most load cells. Channel B has a fixed gain of 32, typically used for sensors requiring lower amplification.

Q: Can this module work with a 3.3V logic microcontroller?

A: Yes, the HX711 operates between 2.6V and 5.5V, making it fully compatible with 3.3V systems like many STM32 or ESP32 boards.

Q: Is there a library available for Python?

A: Yes, there are several open-source Python libraries available for Raspberry Pi that support the HX711 protocol. We recommend checking GitHub for the most updated versions.

Q: Does this come with connecting wires for the load cell?

A: No, the module includes the board only. You will need to solder your load cell wires directly to the E+, E-, A+, and A- pads on the board.

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

A: The rate is selected by the state of the PD_SCK pin when the chip wakes up from power-down. Most libraries handle this automatically via a configuration setting.

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