This is something I’ve been working on for a while, a very versatile tremolo guitar effect. Electrically it’s not very complicated, most work is done with a PIC16F886 microcontroller which generates a PWM signal which is then filtered and used as an analog control voltage for a VCA (voltage-controlled amplifier).
The video shows an older version. Recently I started to rewrite the software because the old software was too unreliable (tap tempo problems, rotary encoders issues, noise).
A while ago I decided it was time for something to replace my Peavey Bandit amp. I was looking for a three-channel amp so I could have a separate channel for solo’s. Most three-channel amps however are pretty expensive so I started looking for a DIY-amp that suited my needs. I remembered a three-channel preamp kit that was sold at Musikding.de, and I noticed that they’d added another preamp kit called the Anvil.