Plug a guitar in your C64 and use it as a wah pedal

Re:Plug a guitar in your C64 and use it as a wah pedal by diydsp on Saturday September 24, 2022 @03:29PM (#32965817)

any suggestions to protect it? e.g. buffer with an op-amp, right? Any way to use diodes for static protection, etc.?

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Re:Plug a guitar in your C64 and use it as a wah pedal by satiric on Saturday September 24, 2022 @05:49PM (#32966831)

One common way to provide input overvoltage protection is through a pair of schottky diodes. This article is a good resource https://www.digikey.com/en/articles/protecting-inputs-in-dig...

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Re:Plug a guitar in your C64 and use it as a wah pedal by buescher on Saturday September 24, 2022 @06:58PM (#32967348)

That's a pretty good article. Also, the classic one-volt-or-so voltage limiter is a pair of antiparallel silicon diodes. You can put them in series for a bigger limit.

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Re:Plug a guitar in your C64 and use it as a wah pedal by classichasclass on Saturday September 24, 2022 @05:58PM (#32966898)

There are some good practical solutions here ( https://www.lemon64.com/forum/viewtopic.php?t=55483&sid=2710... ) but the most important thing is keep the voltages down. They suggest three volts max peak to peak, which seems prudent.

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