Fixed paintboard code
Added servo initialization and more internal_data array entries
added code to read metal detector on PD4
Finished paintboard code except for metal detector
Changed abs() in motor.c to clamp -128 to 127
Added motor and servo code. Both timers are set to phase-correct-PWM mode, which is yet to be tested. Also, I used 32 prescaler.
Initial commit of some of the paintboard code