Evolution: Triangle VCO

This shows the progress of the Ian Fritz Triangle VCO that I talked about in an earlier post. After a few stuff ups it all came to life today! Two problems cancelled each other out which caused a bit of head scratching but after a few tweeks we did get this:

I haven't calibrated the 1V/octave bit yet but so far it seems really quite good! But then you would expect that from Ian's designs...

Wheel Barrow Walk...

OK as per a post a bit of a while ago (Imutable...) I have actually finished the prototype PCB for the mutant Peaks style board. Will try and etch it in the next day or so and do some testing. The name follows on from the Drowning by Numbers association. Since this one is using a fairly slow processor I thought that having Walk in the name seemed appropriate! I have probably gone a bit over the top with the heat-sinks. If people are happy to etch their own boards then this should be about a $30 build + panel & knobs... It is really only useful as LFO/Envelope Generator, not drums, but hopefully a useful learning/experimentation platform...

The Nyman album for the soundtrack to  Drowning by Numbers is one of my favorites and gets regularly listened to even though I bought it in 1991.

AD538

Got one of these to make a MoTM-510. God knows what it will sound like!

Elvis's Coffin

Busy weekend making a cabinet. Just cheap MDF then I thought of using some Tolex in a sort of ARP2600 sort of way... This isn't actually Tolex just some vinyl that is usually used for upholstering. The black looked a bit boring so I got some white instead. My wife informed me that it looked like something of Elvis's... the boys thought maybe his coffin... If all goes to plan I will need 6 of these just to use up all the boards that I have floating around...

Ian Fritz's Triangle VCO

I built Ian Fritz's Teezer VCO recently and it is extremely clever. It is probably the most unique design that I have seen for an Synth widget for a long time. I can see why he got grumpy when Mr. Blue Lantern allegedly ripped of his design. Anyway it piqued my interest in some of his other VCO designs on his website -- I know that I have looked at this one before, as it is dated 15 years ago, but for some reason I never really took it in. So I have done a layout that is P'n'P compliant and will give it a go.

Forbin Digal LFO

Well revisited the Digital LFO from many years ago. This is a Altium layout that I did about 3 years ago to replace the Eagle layout that was posted about 6 years ago! Unfortunately we had a failure with the Kinsten photo PCB... I typed the name wrong anyway... Grrrrrrr......

Ripplez

Well the huge, through hole version of Mutable Instruments Ripples is on a panel, and mostly working... couple of wrong value resistors that need replacing and maybe lower gain (i.e. specified -- not what's on hand) transistors...