8-BIT SHIFT REGISTER WITH OUTPUT LATCHES
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7400 Contest Entry - Discrete Logic Drum Machine
74hc595
5,365 views
A 4-channel, 16-step percussion synthesizer/sequencer built with discrete logic: no microcontrollers, no software.
More info and schematics: http://github.com/74hc595/7400...
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Homebrew 6809 Computer: Plasma Effect
74hc595
2,535 views
Old school plasma effect. ☮‿☮ The video chip only supports 15 colors, but with some dithering you can get pretty smooth results.
The video quality is crappy because of my ...
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Homebrew 6809 Computer: Asteroids!
74hc595
3,106 views
I have an Ultim809 PCB up and running and I've written my first graphical game for it, a nearly complete implementation of Asteroids (in assembly language, of course!)
If ...
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Rare 22-segment LED display
74hc595
1,736 views
This is a very rare DL-3422 intelligent alphanumeric display: it seems to only have been produced for a couple of years in the early 1980s and there is no information about...
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Homebrew 6809 Computer: Conway's Game of Life
74hc595
5,912 views
Even at only 2 MHz, my little computer can do some awesome stuff. To test out the video and sound chips, I implemented Conway's Game of Life with fading, color-changing cel...
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Homebrew 6809 Computer: Color Video! (TMS9918A)
74hc595
6,967 views
Last weekend it was audio, this weekend it's video! I have the 6809 connected to a TMS9918A video chip.
The TMS9918A was used a number of early-'80s computers and consol...
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Homebrew 6809 Computer... plays Atari ST music?!
74hc595
5,101 views
(music starts at 3:06 if you want to skip my explanation)
With a bit of hacking, I got my little 8-bit, 2MHz computer to play Atari ST music...
An Atari ST song is basica...
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Homebrew 6809 Computer: First Sounds (YM2149)
74hc595
3,221 views
Well, I'm sick, and didn't feel much like going out tonight, so I hooked up a Yamaha YM2149 sound chip. (also known as the AY-3-8910, used in a bunch of old computers and c...
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My Kraftwerk tie
74hc595
1,364 views
I whipped this up in a couple hours for my Kraftwerk Halloween costume. No microcontroller! Just a 7555 timer and a 4017 decade counter running off two AAA batteries.
If y...
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1-Bit Synthesizer Jam
74hc595
2,986 views
Revision 2 of the 1-bit synthesizer, on a breadboard with a lovely paper front panel.
The waveform selectors are potentiometers (instead of expensive rotary or BCD switche...
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