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M5Stack® Mini Weight Module HX711 Sensor 24 Bits Weighing Pressure Sensor I2C Interface for Audrino Grove Port

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                  Description:

                  WEIGHT intergrates an 24 bits A/D chip HX711 that is specifically designed for electronic weighing device.

                  The input multiplexer selects either 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, when a 5V supply is connected to AVDD analog power supply pin. 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.


                  Product 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 ran ge: 2.6 ~ 5.5V
                  • Operation temperature ran ge: -40 ~ +85℃
                  • 16 pin SOP-16 package
                  • Program Platform: Arduino, UIFlow(Blockly, Python)
                  • Two Le go-compatible holes
                  • Product Size: 32.2mm x 24.2mm x 10.5mm
                  • Product weight: 8g

                  Package Included:

                  • 1x WEIGHT Unit
                  • 1x Grove Cable

                  Application:

                  • Micro weight meter
                  • Kitchen Scale

                  EasyLoader

                  Example:

                  1. for Arduino IDE

                  We used a pressure sensor(10kg) in this experiment. (Unit: gram)

                  To get complete code, please click here
                   

                  2. UIFlow

                  To get complete code, please click here

                  Schematic:
                   

                  Pinmap:
                   

                  If WEIGHT was connected to GROVE A

                  M5Core(GROVE A) GPIO22 GPIO21 5V GND
                  WEIGHT Unit DATA Pin (DAT) CLOCK Pin (CLK) 5V GND

                  If WEIGHT was connected to GROVE B

                  M5Core(GROVE B) GPIO36 GPIO26 5V GND
                  WEIGHT Unit DATA Pin (DAT) CLOCK Pin (CLK) 5V GND

                  If WEIGHT was connected to GROVE C

                   

                  M5Core(GROVE C) GPIO16 GPIO17 5V GND
                  WEIGHT Unit DATA Pin (DAT) CLOCK Pin (CLK) 5V GND


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