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Product description: HMC1022 Digital compass - I2C/UART GY-26
The digital compass module based on Honeywell HMC1022, which works on the principle of using magnetoresistance measuring the Earth's magnetic field in order to obtain the azimuth angle. It communicates via UART or I2C. The voltage supply isfrom 3 V to 5 V. It works with an accuracy of+/- 5°. The output is the format ASCII. It works in three modes:normal, continuous, and calibration.
Pins of the compass GY-26
The moduleworks withany microcontrollerthat has UART or I2C interface, includingArduino.
| PIN | Description |
|---|---|
| VCC | Supply voltage from 3 V to 5 V. |
| TXD | The data pin of the UART interface. |
| RXD | The data pin of the UART interface. |
| SCL | Clock pin of the I2C bus. |
| SDA | The data pin of the I2C bus. |
| GND | The ground of the system. |
| CAL | Pin for calibration. |
| NC | Not connected. |
| VCC | Supply voltage from 3 V to 5 V. |
Specification of the compass module GY-26
- System: Honeywell HMC1022
- Supply voltage: 3 V to 5 V
- Accuracy: +/- 5°
- Resolution: 0.5°
- Repeatability: < 3°
- Range: +2 gauss
- Resolution: 6 milli-gauss
- Advanced calibration
- Current consumption:
- normal mode:
- min: 5 mA
- max: 8 mA
- typical: 6 mA
- continuous mode:
- min: 5 mA
- max: 7 mA
- typical: 6 mA
- calibration mode:
- min: 5 mA
- max: 12 mA
- typical: 14 mA
- Operating temperature: 0°C to 70°C
- Storage temperature: -40° to 110°C
- Four mounting holes: 2.6 mm
- Pitch of pins: 2.54 mm
- Dimensions: 25,6 x 25,6 mm
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