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 PostPost subject: Digital electronics experiments        Posted: Sun May 25, 2008 11:26 am 
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Is anyone interested in proper electronics? I've built a few crystal sets and radios in my time, and have built a partially-working Nipkov Disk, and took AS Electronics last year.

Has anyone tried to do anything at home, just based on what they've found and looked up, or based on previous knowledge, eg. courses?

I've been looking, on the Internet, for ages at some of the 1950s and 1960s computer kits, like the Digi-Comp I and the Geniac. I wanted to build one for ages, but never knew how, but then, when I found the Digi-Comp I and saw that it was nothing more than 3 mechanical flip-flops that could be connected in any way to produce small logic circuits, I designed my own, small, electronic version, based around 4 555 ICs set up as bistables (flip-flops), 8 buttons (S and R), 4 LEDs for displaying (Q only) and a little breadboard for the "programming." I intend to do a small project for each new stage in the development of digital computers, hopefully working upto building a small CPU out of discrete logic (7400x) chips - so as to better understand conputer architecture.

Does anyone else find this even vaguely interesting, or is it just me, being terminally nerdish?

PS: If anyone is actually interested in this type of thing, I'll be more than happy to try and draw up a couple of schematic diagrams of the thing I'm building at the moment, and put some pictures up of it when I've finished. I haven't drawn the diagrams as yet, because I work better if I just do it - planning always slows me down (and yes, it does work at the moment (not yet added the switches or breadboard)!

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 PostPost subject:        Posted: Sun May 25, 2008 12:01 pm 
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Very interesting mate! It will be interesting to see what you discover. Keep us in the loop, it sounds like an exciting project. I think this has the potential to be the most interesting DIY project I've heard in quite a while.

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 PostPost subject:        Posted: Sun May 25, 2008 12:30 pm 
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That's awesome, the only electronics I've done were simple analog circuits and a few audio circuits at school.

Definitely post pics

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 PostPost subject:        Posted: Tue May 27, 2008 12:21 pm 
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Hey, I've finished doing it all now, but I seem to have faffed the 555s up, so I'm going to get a sackload more and put some DIP-8 chip-holders on it, in case it happens again.

Piccies soon :>.

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 PostPost subject:        Posted: Tue May 27, 2008 10:07 pm 
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My electronics skills are limited to setting up small circuits for research projects (which were also small).
Even if your being terminally nerdish, these skills will give you a gigantic salary!

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