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!

6 comments:

Anonymous said...

That looks pretty cool already, cant wait to have a go, the trimpots + ic sockets for patching is cool. My Junos now got 6 slots for fixing/adding new voice chips but i need a silly scope, have you got one? I'm always amazed at how you get the time to work all this stuff out

S'elektrow-bot

pulsewidth said...

That looks wild! And small as well. Is it hard to perform with the trimpots? Can't wait to hear it!

concretedog said...

Thanks for the comments fella's,

@ ow-bot.... sorry matey no oscilloscopes here...i just record stuff into audacity and zoom in if i need to see a waveform! We definitely need to get a jam when this is thing is built! Can't wait to have a play with the juno :)

@pulsewidth..thanks for the comment, performing with trimpots is a bit of an art to be honest! definitely not for the faint of heart or the visually impaired! I have a collection of 2" screwdrivers (for mending glasses etc) that I can leave stood in trimpots which makes things a bit easier......trimpots are cheap though, I reckon this build is under £20 componentwise.

Anonymous said...

geeks!

concretedog said...

geeks...?!? HELL YES and proud :)

Anonymous said...

i meant greeks ! sorry