Pcb Design

been working on improving my pcb design skills.. trying to come up with a number of ideas for possible board runs..

the first one is a compact arduino board with all pins exposed, usb, prototyping area, and an AD5206 chip (digital potentiometer). This little board should be the ultimate digital pedal hack for CV mods.

Modifying TipTop Audio Z-rails : video briefcase

Taking the measurements

  Original spec on Z-rail 84 HP

  Marking the cut on the first rail

  Pull out the threaded insert


  3 to go!

  All 4 cut

  tappin some M4 for the ears


  Mark the insert

  Inserts cut

  Ears on

  Mark the rack holes


  With skiff

  Full setup

Look at those pretty extension cables

I also made some extensions for my Intellijel Spock. I had 4 hp left in my skiff. Typically I used to put a Plan B headphone amp in there . But since my skiff is now a modulation/clocking/sequencing tool I opted for the Spock. I think that Spock and Clockwork seem to be two of the best fit modules EVER!!

Anyways.. the Spock has a small HP footprint but it does go a bit deep. Too deep for my monorocket skiff.. Luckily for me Danjel at Intellijel designs his PCBs with simple headers that I can make extensions for. HOW COOL.. look at that pretty extension cable.


Darwin Grosse over at 20Objects seems to have gotten some production PCBs back from the factory. He also made this post with some extra pictures over in the 5U sub- forum of Muffwiggler. I am very excited about this project and community involvement. Open source DIY is SO COOL!.

If you don’t know Darwin. He is an extremely accomplished Cycling74 junkie. (max/msp).  Over at his site you will find an entire library of sketches made for the Arduino platform to run with modular synthesizers.

Things I’m most excited about within this library:

Drunken Walk.. yes!

Control Voltage Recorder!

Note Quantizer (could have a lot of fun modding this sketch)

Maxon Ad-999 Delay Pedal Hack (CV)

I recently finished a project in which I disassembled an analog delay pedal meant for guitars, and converted it to use control voltage signals as found on most analog synthesizers. This means that instead of turning the knobs on the pedal, I can send signals from a synthesizer to turn the knob for me at specified times and rhythms. These control voltages are the basis of modular synthesis.

This project involves 3 things. An Arduino microprocessor, an AD5206 integrated chip, and the original guitar pedal. The Arduino is used to sample knob positions and incoming CV (control voltage signals). The Arduino then uses the information to adjust the AD5206 digital potentiometer. This is a 24 pin chip with 4 or 6 channels. Each channel can act as potentiometer with 3 pins for each one. The AD5206 that I used was a 6 channel 10k ohm package.

I had a fellow muffwiggler, Epinasty, make me a panel that conforms to the eurorack standard.

A future video on the technical DIY side of things will be posted in the coming weeks.