MM3 Control Codes ----------------- 0000 0 rest state, default code 0001 1 PU Pen Down 0010 2 PD Pen Up 0011 3 LEDs off 0100 4 RLED Right LED on 0101 5 LLED Left LED on 0110 6 Buzz off 0111 7 Buzz 1000 8 FD LF,RF Forward 1001 9 BK LB,RB Backward 1010 10 RL LB,RF Rotate Left 1011 11 RR LF,RB Rotate Right 1100 12 CBR LB,-- Curve Backward Right 1101 13 CFR LF,-- Curve Forward Right 1110 14 CBL --,RB Curve Backward Left 1111 15 CFL --,RF Curve Forward Left Codes diode decoded in MM3