Arduino library for reading rotation angle from AK7451 sensor. This IC by Asahi Kasei Microdevices Corporation (AKM) uses a built-in Hall effect element to perform non-contact rotation angle measurements in combination with a diametrically magnetized two pole magnet. Communication is via SPI.
The sensor was tested using the Mikroe-2755 Angle 3 click breakout board with an Arduino Mirco and Arduino Uno as the sensor uses 5V. A diametrically magnetised ring magnet Ø 10/5 mm from supermagnete was used.
The pinout for the connections is as follows:
| Arduino micro | AK7451/Angle 3 click |
|---|---|
| 5V | 5V |
| GND | GND |
| SCK | SCK |
| MI | SDO |
| MO | SDI |
| SS | CS |
Currently only basic usage is implemented. This includes reading the absolute angle data, error and mode bits in Normal Mode (see the AK7451 datasheet for more details). User Mode is a work in progress.
Library installation in Arduino IDE is per the usual manner.