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This is a circuit that will give a regulated, variable voltage from around 8.5vdc to 1.5vdc, if using a 9 volt supply. It also "emulates" age by throwing in a bit of capacitance (220pf) and a tiny impedance(max 200 Ohms). I sell a "real " version of this on a PCB, with a pretty case, but this...

This is another fun time with vero board! The metronome from "Electronics Projects for Musicians", of which you can find a PDF on Google, which I highly recommend doing. I built this into a 1590A enclosure for my daughter, to use with her piano. It has a Pretty good "click" that goes from around...

This forum needs some threads, so I thought I'd throw in my hat. All of these are VERIFIED, so have fun! First up, a super handy inverter vero, for that old fuzz! +9vdc to -9vdc! Next up, an FV-1 module with adjustable frequency. This has come in handy ALOT. Replaces the crystal...