Datasheet

Pinouts

The little chip in the middle of the PCB is the actual MMA8451 sensor that does all the motion

sensing. We add all the extra components you need to get started, and 'break out' all the

other pins you may want to connect to onto the PCB. For more details you can check out the

schematics in the Downloads page.

(http://adafru.it/dLn)Power Pins

The sensor on the breakout requires 3V power. Since many customers have 5V

microcontrollers like Arduino, we tossed a 3.3V regulator on the board. Its ultra-low dropout

so you can power it from 3.3V-5V just fine.

Vin - this is the power pin. Since the chip uses 3 VDC, we have included a voltage

regulator on board that will take 3-5VDC and safely convert it down. To power the

board, give it the same power as the logic level of your microcontroller - e.g. for a 5V

micro like Arduino, use 5V

3Vo - this is the 3.3V output from the voltage regulator, you can grab up to 100mA

from this if you like

GND - common ground for power and logic