Alesis Bitrman Control Voltage Mod

[flyingape11]

sounds like steve albini

[WackyJackyTracky]

Hey, this is great!!!!

Do you guys have a little instruction how to do this?

cheers

[instrujunkie]

This time I've told a way to send data from Adat formatted outputs into ModFXs' 9pin and vice versa. (costs appr. 25BPF). I didn't try yet...

And then there is an undocumented feature to all ModFX with envelope follow or triggered mode, I found myself. Does not work for the Bitrman unfortunately.

Which circuit bending forum do you consider the best?

Thank you

Iunkie

[instrujunkie]

Holy shit, I really love it. Thanks for your work. I mailed to you directly, but... To find out more about the 9pin connector I released one ModFX review a day at harmony central (I got 12 of them)asking Alesis US and Germany daily for details. And today I got answer, from Germany again. So now I know even more secrets about them. I'll show you mine, if you show me yours ;-) Thought of establishing a ModFX group at yahoo, but first I'll post at the CB-fora. Which one'd you suggest? THX. InstruJ.

[therealretrosynth]

I'm not sure what secrets you think there are. All the ModFX line is based on identical hardware and PCBs. The only difference is the code programmed into the microcontroller and the front panel bezel (and associated switches and LEDs) It's a WavefrontSemi AL3102 DSP with a Philips 8751 to scan the pots and switches and program the DSP. The 9 pin connectors are connected to the DSP's extra serial input and output channels and allow chaining of effects without extra D/A and A/D conversions.

[rtmx]

Greetings,

Have you finished a safe CV mod for public consumption?

CV control would be sooooo cool. Any info would be greatly appreciated.

rt

[therealretrosynth]

I haven't had time. This mod should only be done by someone with some decent electronics background and understanding. You can start by lifting the center leg of the pot and using that as the input. I suggest optoisolating it. You may or may not need a pull up resistor depending on what type of optoisolator you use.

[genxtargetmarket]

Mr. Retrosynth,

If you do find the time, a guide to modifying this little beast would be most welcome!

[dopepoo]

Sounds great.

I'm specifically looking for a bitcrushing effect I can 'sweep' manually. Does the Bitrman allow you to sweep the level of bitcrushing effect using one of its knobs? I want to chain it onto my Novation Nova 2 so I can bitcrush my bass sounds live.

Beyond that, are there any other hardware inexpensive hardware boxes which do bitcrushing I could use?

Many thanks

Jake

[Biopharmer]

i'm pretty sure that the korg R3 and radias have bit crushing effects in them, but that's a bit more expensive than a simple box! (access virus too i believe)

[dopepoo]

thanks

[Toolsquatch]

Yes, the Bitrman gives you 2 bitcrushing effects to choose from and you can sweep it manually with the "Bittrness" knob.

[eatmedouche]

dont kill your bitrman cannnotfindone, there hard to find.

[cannnotfindone]

I'd like to have mine modified too...

How can I do it?

Thanks!

[therealretrosynth]

I'm not going to make public my modifications until I can sort out overvoltage protection. Right now it's possible to destroy the pedal by feeding it too high a voltage on the CV input. I don't want to be blamed for other folks breaking their pedal.

[eatmedouche]

Good work, sounds awesome as hell.

But could we get hints? ;)

Im guessing that you cut the connection of the pot swiper, and basically made a voltage summer that takes in the CV input and the swiper of the pot and connected it to the original connection?

I need to open mine up and take a look at it.

again, very cool.

[therealretrosynth]

That's not how I did it but that could be made to work. Depends on if you want the pot to act as a DC offset control or a modulation amount control. I chose modulation amount.

[cannnotfindone]

Thanks, I really appreciate...and, btw, awesome mod!!! ;-)

[zable95]

cool