[dcb]

Other notes:

1. the basic signal processor is 3458 bytes (of a 14336 byte maximum). If I take out any references to serial, it goes down to 1922 bytes.

2. the main loop is taking about 6 milliseconds, without any vss or injector interrupts, but with serial transmission of "0,0,0" before it waits for the second to be over.

3. it might be better to use microseconds to control the main loop or otherwise detect that the 9 hour millis rollover has occured and adjust accordingly, it should be able to run forever without breaking, not 9 hours.