Re: ez430-Chronos Accelerometer and Theremin
The ez430 Chronos Wiki is really the best resource to understand communication with the watch.
The watch is a reprogrammable microcontroller, so really my software only communicates with the watch in factory state. This is documented in the ez430 Chronos Wiki.
It's been a while since I looked into the code, but I do not recall a CRC or ending flag. The baud rate is fixed by the RF receiver; again this is documented in the ez430 Chronos Wiki.