+ case 0x30: // Motor 1 speed MSB
+ TWDR = speed1>>8;
+ TWI_ACK;
+ break;
+ case 0x31: // Motor 1 speed LSB
+ TWDR = speed1;
+ TWI_ACK;
+ break;
+ case 0x32: // Motor 2 speed MSB
+ TWDR = speed2>>8;
+ TWI_ACK;
+ break;
+ case 0x33: // Motor 2 speed LSB
+ TWDR = speed2;
+ TWI_ACK;
+ break;
+ case 0x34: // Motor 3 speed MSB
+ TWDR = speed3>>8;
+ TWI_ACK;
+ break;
+ case 0x35: // Motor 3 speed LSB
+ TWDR = speed3;
+ TWI_ACK;
+ break;
+ case 0x36: // Motor 4 speed MSB
+ TWDR = speed4>>8;
+ TWI_ACK;
+ break;
+ case 0x37: // Motor 4 speed LSB
+ TWDR = speed4;
+ TWI_ACK;
+ break;