Prepare robot hardware

Take the robot out of its boot mode so that it can be controlled externally. Generally the following special commands achieve this:

   * [231, 0] # IMU off - to minimize possible loss of commands over the FUP (may want to leave on or turn on later with 231, 1)
   * [173,77,7] # demux statemachine to idle mode
   * [170,77,17] # primary statemachine to the 'do nothing state'
   * [1421, 17] # MC statemachine to a 'do nothing success state' 

####################################################
# send special commands to 'prepare the hardware'
####################################################

pf.do_command('special',[173, 77, 7]);
pf.do_command('special',[170, 77, 17]);
pf.do_command('special',[1421, 8]);           
pf.do_command('special',[173, 77, 6]);    
pf.do_command('special',[170, 77, 17]);