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I’ve been thinking about building a new version of the tremolo I mentioned in the previous post. This will be a very versatile tremolo/volume controller in a 1U 19″ rack enclosure.

Some of the features are:

• Stereo in & out
• Two tremoloes (one of which can pan between left and right)
• Tap tempo
• MIDI PC’s and CC’s
• Multiple in- and outputs so the tremolo can be placed before or after the preamp
• Speed, volume, depth etc. can be controlled real-time through MIDI CC’s or expression pedal
• Various waves: sine, triangle, ramp up/down, square, patterns, random…

This will be a huge improvement on the pedal tremolo but it’s also a very big project. At the moment there are only ideas, some schematics, a bit of software pseudo-code and an idea about the design:

Next week I’ll probably start with the power supply, the PWM filters and the voltage-controlled amplifiers.

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).

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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.

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