This weight unit integrates a HX711 24 bits A/D chip that is specifically designed for a electronic weighing device. The input multiplexer selects either a 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. 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. 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 ~ +85C 16 pin SOP-16 package Program Platform: Arduino, UIFlow(Blockly, Python) Two Lego-compatible holes Package Contents 1x Weight Unit 1x Grove Cable Specifications Resources Parameter Net weight 8g Gross weight 20g Product Size 40 x 24 x 12mm Package Size 67 x 53 x 12mm Resources Documents