Gravity I2C 1Kg Weight Sensor Kit - HX711

1 kg load cell with HX711 amplifier breakout and Gravity I2C interface. Includes built-in calibration support; compatible with Arduino and Raspberry Pi.
Pinout
- VCCsignal transfer board
Logic power input
Type · PowerVoltage · 3.3V or 5V - GNDsignal transfer board
Ground
Type · GroundVoltage · 0V - SCLsignal transfer board
I2C clock line
Type · I2CVoltage · logic level - SDAsignal transfer board
I2C data line
Type · I2CVoltage · logic level - CAL Buttonon-board button
Automatic calibration button
Type · Control - E+load-cell connector
Load-cell excitation positive, red sensor wire
Type · UnknownVoltage · sensor excitation - E-load-cell connector
Load-cell excitation negative, black sensor wire
Type · UnknownVoltage · sensor excitation return - S-load-cell connector
Load-cell signal negative, white sensor wire
Type · UnknownVoltage · differential signal - S+load-cell connector
Load-cell signal positive, green sensor wire
Type · UnknownVoltage · differential signal - RST Buttonon-board button
Tare / reset button
Type · Control
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VCC | signal transfer board | Power | Logic power input | 3.3V or 5V |
| GND | signal transfer board | Ground | Ground | 0V |
| SCL | signal transfer board | I2C | I2C clock line | logic level |
| SDA | signal transfer board | I2C | I2C data line | logic level |
| CAL Button | on-board button | Control | Automatic calibration button | |
| E+ | load-cell connector | Unknown | Load-cell excitation positive, red sensor wire | sensor excitation |
| E- | load-cell connector | Unknown | Load-cell excitation negative, black sensor wire | sensor excitation return |
| S- | load-cell connector | Unknown | Load-cell signal negative, white sensor wire | differential signal |
| S+ | load-cell connector | Unknown | Load-cell signal positive, green sensor wire | differential signal |
| RST Button | on-board button | Control | Tare / reset button |
Pin details
10 connections- VCCsignal transfer board
Logic power input
PowerVoltage · 3.3V or 5V - GNDsignal transfer board
Ground
GroundVoltage · 0V - SCLsignal transfer board
I2C clock line
I2CVoltage · logic level - SDAsignal transfer board
I2C data line
I2CVoltage · logic level - CAL Buttonon-board button
Automatic calibration button
Control - E+load-cell connector
Load-cell excitation positive, red sensor wire
UnknownVoltage · sensor excitation - E-load-cell connector
Load-cell excitation negative, black sensor wire
UnknownVoltage · sensor excitation return - S-load-cell connector
Load-cell signal negative, white sensor wire
UnknownVoltage · differential signal - S+load-cell connector
Load-cell signal positive, green sensor wire
UnknownVoltage · differential signal - RST Buttonon-board button
Tare / reset button
Control
Start wiring
Analog · I2C · 3.3 – 5 V · Bare
Confirm the data interface matches your host board.
Module pins: VCC, GND, SCL, SDA. Schematik maps them to your board in the app.
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