Category Archives: Circuits and Electronics

True bypass with DPDT and LED indicator

Typically to get true bypass with an indicator LED, you need a 3PDT.  Sometimes these are hard to source, and even when found, quality can be less than perfect.  To get around this you can use relays to control switching … Continue reading

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Simple guitar cable tester

With social distancing being the current norm, I’m working primarily from home right now.  As such, I found I needed to clean my work area.  Doing this, I also found I had a lot of random bits around and decided … Continue reading

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555 Metronome

I wanted to make a metronome and decided on the venerable “555” chip. In this case I used an LM555CN. I had all components needed except the IC itself, so I ordered a handful (they are only about $0.75/each) and … Continue reading

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Series telecaster wiring, stock 3 way switch

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Passive headphone level mixer

My old guitar amp doesn’t have a line in jack to allow me to mix my guitar signal with an audio source as a backing track.  To remedy this, I created my own mixer.  More details here:  http://www.ssguitar.com/index.php?topic=4028 The short … Continue reading

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