#Lm567 morse decoder drivers#
CRJEEA on Hackaday Prize 2023: Hearing Sirens When Drivers Can’t.
on 3D Model Subscriptions Are Coming, But Who’s Buying? There’s one built into a joystick, a circuit sculpture version complete with mini-CRT, or even eight APCs teamed up with MIDI control.Ĭontinue reading “The Atari Punk Console, Now With More Vacuum Tubes” → Posted in classic hacks, Musical Hacks Tagged 555, apc, astable, atari punk console, monostable, oscillator, synth, vacuum tube No worries - plenty of silicon Atari Punk Consoles to choose from here. The video below shows both versions in action, as well as detailing their construction.Īs cool as a vacuum tube synth may be, we realize that not everyone goes for the hot glass approach. Housed on a CNC milled PCB in a custom wood box, the synth does a respectable job and looks good doing it. then vastly simplified the design, reducing the BOM to just four dual-triode tubes. With 32 tubes aglow amid a rats-nest of jumpers, the console managed to make the requisites sounds, but lacked a certain elegance. His “hollow-state” Atari Punk Console began with the 18-tube version of the 555 that he built just for fun a while back, which proved popular enough that he’s working on a kit version, the prototype of which served as the second timer for the synth. It’s little surprise to regular readers that this one comes to us by way of at Usagi Electric, who hasn’t met a circuit that couldn’t be improved by realizing it in vacuum tubes. Very few of us, however, have likely seen an APC built from 555s that are made from vacuum tubes. Most of us have beheld the sonic glory of an Atari Punk Console, that lo-fi synth whose classic incarnation is a pair of 555 timers set up to warble and bleep in interesting ways. Listeners of the Hackaday Podcast may recall we experimented with using KCS to hide some data within an episode a few months back.Ĭontinue reading “A Cassette Interface For A 6502 Breadboard Computer, Kansas City-Style” → Posted in Retrocomputing Tagged 6502, cassette, comparator, decoder, FSK, kansas city standard, KCS, monostable We’re looking forward to the rest of the series, which will turn this into an actual decoder, and presumably add an encoder as well. A test signal created using Audacity - is there anything it can’t do? - was successfully decoded, providing proof of concept for the project’s first phase. ’s prototype has a comparator to convert sine waves to square waves, followed by pair of monostable timers, each tuned to either the high or low frequency defined in the KCS specs. After a failed attempt to use an LM567 tone decoder chip, he stumbled upon ’s KCSViewer project, which decodes KCS-encoded audio signals using nothing but discrete components. There are also some good technical details on the modulation scheme KCS used, which used to base his build.
The video below explains the Kansas City standard in some detail, and includes some interesting historical context we really hadn’t delved into before. But because floppy drives were expensive peripherals and hard drives were still a long way from being the commodity they are today, cassettes enjoyed a long run at the top of the bulk data storage heap.Ĭelebrating that success by exploring the technology of cassette data storage is the idea behind ’s Kansas City decoder project, which he hopes to use with his -style 6502 computer. It’s been a long time since computer hobbyists stored their programs and data on cassette tapes.
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