Datasheet

Wiring & Test

You can easily wire this breakout to any microcontroller, we'll be using an Arduino. For

another kind of microcontroller, just make sure it has I2C with repeated-start support,

then port the code - its pretty simple stuff!

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

The MMA8451 has a default I2C address of 0x1D and can be changed to 0x1C by tying the

A pin to GND