Update README.md

vintlabs · Jul 30, 2020 · 7b165e8 · 7b165e8
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 ![3D Hall Sensor Module Image](https://github.com/vintlabs/3D-Hall/raw/master/3dHallModule.jpeg)
 
-This I²C sensor module cn detect magnetism in three dimensions (XYZ), and can be easily connect to a 3.3V Arduino, ESP32, Raspberry Pi or other microcontrollers. The header is designed such that it can plug directly into the header of a Raspberry Pi or and ESP32-Zip module.
+This I²C sensor module cn detect magnetism in three dimensions (XYZ), and can be easily connect to a 3.3V Arduino, ESP32, Raspberry Pi or other microcontrollers. The header is designed such that it can plug directly into the header of a Raspberry Pi or and ESP32-Zip module. Board dimensions: 40mm x 15mm
 
 The default I2C address is 0x60, but can be changed by modifying R3-R6 (See page 22 of the ALS31313 datasheet (https://www.allegromicro.com/~/media/Files/Datasheets/ALS31313-Datasheet.ashx).