Roland FC100 mod: Digital LFO modulating GP8 via MIDI CC messages (tremolo)

[Carlos]

Hi everyone,

I always thought that a decent tremolo effect is missing on the Roland GP8. However,  I could achieve a decent tremolo effect with my trusty Roland GP8 by rocking the EV5 modulation pedal (attached to the Roland FC100 foot controller) back and fro rhythmically.
So my band mate and friend of mine  modded my FC100 to modulate the GP8 by continuous MIDI CC messages. He programmed an ATMEL ATtiny 4313 to do the job:

* You only have to drill holes for two 3mm LED, LFO LED and EDIT/STORE LED
* Few parts: quartz oscillator, two ceramic caps, one electrolytic cap, two LEDs and resistors
* LFO can be edited and programmed with the EV5 and the footswitches of the FC100
* Four waveforms: sine, square, triangle, sawtooth. One of which can be saved for each program change
* Speed and depth can be saved for each program change
* EV5 can still be used when the LFO is running
* MIDI merge function (LFO and program changes and EV5 values are merged)

If you're interested, he might send you the program code:
http://www.elleven.de/en/news.html

Kind regards

Carlos

[Carlos]

Sorry, the link was broken, but the page is online again.

Carlos

[Rylan]

I am interested in the code if he wants to share? I have recently acquired a SECOND GP-8 and was looking around at things I might do to make the pair more useful in the studio.
Where might I contact him?