Wiring & Test
You can easily wire this breakout to any microcontroller, we'll be using an Arduino. For another kind of
microcontroller, as long as you have 4 available pins it is possible to 'bit-bang SPI' or you can use two
I2C pins, but usually those pins are fixed in hardware. Just check out the library, then port the code.
I2C Wiring
Use this wiring if you want to connect via I2C interface
Connect Vin to the power supply, 3-5V is fine. Use the same voltage that the microcontroller
logic is based off of. For most Arduinos, that is 5V
Connect GND to common power/data ground
Connect the SCL pin to the I2C clock SCL pin on your Arduino. On an UNO & '328 based
Arduino, this is also known as A5, on a Mega it is also known as digital 21 and on a
Leonardo/Micro, digital 3
Connect the SDA pin to the I2C data SDA pin on your Arduino. On an UNO & '328 based
Arduino, this is also known as A4, on a Mega it is also known as digital 20 and on a
Leonardo/Micro, digital 2
By default, the i2c address is 0x77. If you add a jumper from SDO to GND, the address will change to
0x76.
