I have a Casio keyboard, with which I wish to use a high quality Yamaha sustain pedal. The problem is that the two use inverse logic from the other. It is a simple two conductor setup. The Casio expects the circuit to be closed when the pedal is pressed, while the Yamaha pedal does the opposite, and breaks the circuit when the pedal is down.
I cannot reverse the logic mechanically. I can definitely make a logic inverter using a PIC that would do the trick. However I do not want to have to use a power supply (battery or otherwise) to power the adapter. I will look into parasitic power if necessary.
Before I use a PIC, which seems like overkill, does anyone have any suggestion for how to invert the logic without requiring external power? The voltage output by the keyboard is a convenient 5V DC.
Thanks!
Dan East
I cannot reverse the logic mechanically. I can definitely make a logic inverter using a PIC that would do the trick. However I do not want to have to use a power supply (battery or otherwise) to power the adapter. I will look into parasitic power if necessary.
Before I use a PIC, which seems like overkill, does anyone have any suggestion for how to invert the logic without requiring external power? The voltage output by the keyboard is a convenient 5V DC.
Thanks!
Dan East