No matter the size of the stage, most gigging guitar players are likely to have to return to the same spot from time to time to change the tone, increase the volume, check tuning or to operate the wah effect. Thanks to a team of students from Purdue University's School of Mechanical Engineering, the last of those has now been liberated from the pedal board and strapped to the player's ankle. But this doesn't involve attaching a large brick-shaped wah pedal to one leg, as one's imagination might suggest, but wearing a small wireless transmitter and a couple of sensors instead. Players operate the Ghost Pedal in much the same fashion as a physical pedal, the sensors registering the rocking motion of the foot and feeding data to a base station connected to the amplifier.
Read the full article: Ghost Pedal lets guitarists wander the stage and wah