Eowave Eobody3 User Manual
Page 14

How to connect standard expression pedals or footswitches
to my Eobody3
There are mainly two wiring norms for pedals on the market: the Yamaha norm and the Roland 
norm. With your Eobody3, you may use directly all expression pedals or footswitches at the 
Yamaha norm. To use pedals and footswitches, which respond to the Roland norm, you need to 
modify your pedals or build an adapter. Before you decide to modify your pedal, be aware that this 
is a hardware modification and that, once modified, your pedal won’t work with other Roland type 
devices anymore. Eowave declines all responsibility for your modification. If you’re not sure that 
you have the skills for doing this modification by yourselves, ask a professional. 
1
• Roland norm vs. Yamaha norm
 
Roland norm expression pedal connection 
Eobody connection 
 
• To modify your pedal
 
Open the jack 
Invert tip & ring cables 
Leave the ground unchanged 
 
• To build an adapter
 
You need: 
one 3 wires cable, 
one stereo jack connector, 
one stereo jack female connector 
Solder: Ground to ground, Tip to ring, Ring to tip 
 
• Standard wire footswitch
• To modify your footswitch
You may check the ring/tip with a multimeter if 
you
’re not sure.
Cut the mono jack 
Replace it by a stereo jack 
Connect one wire to +5 V pin (tip) 
Connect one wire to the signal (ring) 
Connect one 3K resistor between ground and 
signal (ring) 
 
 
• To build an adapter 
 
You need: 
one 3 wire cable, 
one stereo jack connector, 
one stereo or mono jack female connector 
Solder ground from female to ring of male 
connector, tip to tip, 3K resistor between 
ring/ground from male connector. 
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