Strain gauge with transducer

The HX711 strain gauge and transducer weight sensor is an ideal solution for anyone who wants to build their own digital scale or experiment with force measurement. The module can be easily connected to the micro:bit and used in school projects, for example to demonstrate physical phenomena such as weight, force or a pulley.

The heart of the system is the HX24 precision 711-bit A/D converter, designed for measuring the signal from the strain gauge bridge. It offers fast response, high accuracy and reliability. Thanks to the included connector, it is easy to connect without the need for soldering.

The sensor is compatible with MakeCode, Python and JavaScript. For an easier start, you can use the prepared instructions or get inspired by the "scale with strain gauge" project. A great choice for teaching and home DIY.

Features – Strain gauge with transducer

Sensor specifications:

• Distributor: OMG Robotics

• Rated load: 1 kg

• Output signal: 1.0 ± 0.15 mV/V

• Zero output: ± 0.01 mV/V

• Input Impedance: 1115 ± 10%Ω

• Output impedance: 1000 ± 10%Ω

• Cover: IP65 (dust and splash resistant)

• Sensor dimensions: 75 × 13 × 13 mm

• Threaded hole spacing: 10 mm

• Wire length: 20 cm

• Material: Aluminium alloy

• Weight: 30 gr

• Wire connection:

  • Power supply: red (+), black (–)

  • Signal: green (+), white (–)

• Power supply:

  • Recommended: 3-12V DC

  • Maximum: 15V DC

Converter specifications:

• Type: 24-bit A/D converter for strain gauge sensors

• Dimensions: 35 × 22 mm

• Frequency filter: 50 Hz and 60 Hz (to eliminate interference from the mains)

• Power voltage: 2,6-5,5V DC

• Distinction: 24 bits

• Number of channels: 2 (channel A and channel B)

• Sampling frequency:

  • 10 SPS (lower noise)

  • 80 SPS (faster response)

• Amplification:

  • Channel A: 64× or 128× (programmable)

  • Channel B: 32 ×

• Consumption:

  • Operating current: < 1500 µA

  • Sleep current: < 1 µA

Note: 

• This product does not form a separate functional unit and may require professional assembly.
• The product does not contain a micro:bit.
• Product photos correspond to the real product, but in exceptional cases it may differ, for example in color.
• You can find examples of use in the section projects.