Sunday, 30 January 2011

The glorious guts

It occurred to me today to take some shots of blarps innards, as you may see it's getting a bit packed in there! I'm glad I partialy built the enclosure as it has made the final boards/panels easier to work on. I added an XOR chain, 4011 "pseudo ring mod" and am halfway through adding a final pair of 4 bit shift registers. I am onto the final quarter of front panel and after finishing the shift reg's I'll be adding some 4018 AND gates (possibly diode summed inputs so I can turn shift reg bit outs into sequencer oneshots) and a couple more AREGVCA's.

I haven't posted any schematics for these but they are all findable on either

Electro music forum


TSOL (the sound of logic)

However if anyone ever wants any advice on getting into building any of this stuff feel free to get in touch if you think I can help.

Sunday, 23 January 2011

BLARP, half finished!

Sorry it's been a while, I've been continuing with the machine started in the last post. It's turning into a monster project and I'm getting limited time. The beastie has acquired the name "Blarp" and is shaping up well. I've gone for a sloping panel as a compromise between ergonomics whilst both standing and sitting and despite it getting pretty cramped inside it's still small enough to be pretty portable.

For those into cmos/lunetta (!) it already contains, 2 x 4015 shift registers, 6 x 40106 oscs, 4 x XOR gates, 1 Kludgey area, 2 x 3 channel passive mixer each with jack outs (Jacks to be mounted in a flat panel at the top of the console), 2 x AREGVCA as designed by Richarius, 2 x 4069 LFO ala scott gravenhorst (modded for 9v), 1 x 4040 divider (only 5 outputs/divisions utilised). Also since this picture was taken a week ago it also now contains, 1 x passive LP filter controlled via LDR, 4 x 4093 gated oscs, 1 x 4046 VCO, and a 4 input resistance summer/CV mixer.

Not 100% as to what the final modules are to be as yet, I may include another shift register, another VCO and I'd quite like some form of active filter in there...but then I'd like more AREG's...a Sequencer, more oscs...more logic gates, a pseudo ring mod.....the list is endless!