In those days, board designs were published in magazines, afterwards mirrored and copied on transparent foils, heat transferred to hand drilled boards. So it was a complex and nasty job to complete all the boards. There also was no internet, no day one order and next day delivery from Mouser or Farnell, so getting all your components was quite complex and labor intensive. But I was determined to build my own vocoder and did put all my pocket money in it. Months later with the unaffordable help of my best friend, I succeeded to finish the heavily under-estimated build.
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I knew I just had to complete one some day! The casing, made almost entirely of thick clear plexi glass, was just something I could not pass up on. Its size and style just made me think of just one thing, the Elektor Vocoder. Bring it on then! I decided that since the casing is all dumpster material, maybe the electronics could also be built using as much recycled parts as possible.
The only difficult ones were the Siemens connectors used to interface all the boards together through the backplane. The second issue were the etching masks for the boards. The scans floating around in the net were piss-poor quality jpgs and thus cleaning them up took quite a while. CAD, now wtf is that. These two things out of the way, I immediately broke the zero budget concept and bought the first batch of photosensitive PCBs for etching.
Present Day Update: Little did I know that opting to use as much recycled parts as possible would turn this project into the lengthiest one to date. I knew I had to buy some of the parts like the photosensitive boards but was initially aiming for too a high recyling percent.
Eventually, just to be able to bag the project some day, I ended up buying a bit more parts than what I originally planned. Rate this:.
elektuur-vocoder (1) - een regelrechte zelfbouwprimeur
Elektor Vocoder, part 1