DFRobot Gravity - digital pressure sensor 1kg (10N)

Pressure sensor for Arduino works in the range of up to 1 kg. It is based on HX711, it has 24-bit analog-to-digital converter designed to scale weight and control applications for direct connection with the strain-gauge beam.

The converter's module has four screw connectors for connecting the strain-gauge beams. The supply voltage converter is from 2.6 V to 5.5 V. The Arduino module connection is  easier because because of the applied Gravity connector.

Example of connecting to Arduino.

• Analog-to-digital converter:
  • supply voltage: 2.6 V to 5.5 V
  • system: HX711
  • two input channels
  • active low PGA noise level with chooseable gain 32,64 and 128
  • the voltage regulator for the cells and ADC analog power supply 
  • the oscillator requires no external elements
  • Power-on-Reset
  • simple digital control and serial interface: control via pins, no programming required
  • data range to choose: 10 SPS or 80 SPS
  • operating temperature: -40 °C to 85 °C
• Strain-gauge beam:
  • operating voltage from 5 V to 15 V
  • measuring range: 1 kg (approx. 10 N)
  • output frequency: 1 mV / V
  • zero offset: 0,05 / 0,03 % F. S
  • temperature of the zero offset: 0.05 / 0.03 % F. S / 10 °C
  • zero output: ± 0.1 mV/V
  • input impedance: 1055 Ω ±15 Ω
  • output impedance: 1000 Ω ±15 Ω
  • overload: 200% F. S
  • output: analog
  • dimensions: 38 x 33 mm

• 1x strain-gauge beam
• 1x analog-to-digital converter
• 2x Gravity cable 

• The website of the manufacturer: DFRobot SEN0160
• User manual
• Documentation
• Scheme
• The Arduino library
• Design files