Lastnight wired up a SeeedStudio Grove system compatible twig based on one of the MMA8451Q breakout boards I bought. It has two connectors one for the I2C interface the other for the two interrupt lines which the device has.

I can read acceleration values from the device and once I have the 14bit 2s complement value conversion thouroughly tested I will add code to to configure the interrupt functionality.

Need to make connector leads a bit longer on V2…