module that calculates velocity and then can transmit the data
wirelessly. I could demonstrate it on a r/c car, rocket, etc.
The wireless data transmission isnt the problem, the speed calculation
is what Im thinking about. For example, the SerAccel v3 module here at SparkFun, can output a PWM signal that the PIC could then count over time and determine velocity.
But since theres no absolute reference coming from the accelerometer,
it seems like the calculated velocity could easily get out of sync over
time and with stop/go bumpy acceleration.
Anybody have any thoughts on this? Are there other approaches better
suited? Or how the drift/noise can be minimized?