im expecting to use a 0.5g 2 axis accelerometer and use the magnetometer to give a pitch direction relative to compass north; then its a simple vector comparison.
I havent used one yet, but im looking for under 0.01degree resolution and stability in the output. I can use our granite table as a reference to calibrate.
If i can at least get the proof of concept going then theres more expensive and more accurate accelerometers out there.
Let the master transmit a12 bit time stamp from a "master" clock, if the received packet at the slave didn't agree, ignore and request retransmission.
Im worried it would be in this permanent lag loop where the slave is always 1 request behind and nothing is compared?