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I'm not an electrical engineer or musician, but I feel like there has to be some kind of hack here that would tickle a programmer like me. It felt like the vide

by jart 4y ago

I'm not an electrical engineer or musician, but I feel like there has to be some kind of hack here that would tickle a programmer like me. It felt like the video started getting into that around the 9 minute mark when he said what he was doing with the theramin was fundamentally at odds with the way computers work because computers are designed to be resilient to small changes in capacitance. Also how does this interact with the C64 software? It sounds like an EE project and the C64 is just mentioned in name only. This guy would also have more impact doing videos if he had more light and relaxation.

fanf2 4y ago
The C64 comes in after the 11:30 mark when the oscillator output is hooked up to the C64 pulse counters. The software counts pulses per video frame and adjusts the sound accordingly.
Luc 4y ago
> This guy would also have more impact doing videos if he had more light and relaxation. He's done so much cool stuff I bought a Pocket Operator pretty much because he developed it: https://www.linusakesson.net/music/po-2x/index.php https://www.linusakesson.net/music/po-2x/index.php
soegaard 4y ago
No need to worry about lack of impact due to low light, when you have treasures like the Craft project: https://www.youtube.com/watch?v=sNCqrylNY-0 https://www.youtube.com/watch?v=sNCqrylNY-0 A single microcontroller (ATMega88) produces both graphics and sound in this demo. More info: http://www.linusakesson.net/scene/craft/ http://www.linusakesson.net/scene/craft/
jasonjayr 4y ago
He is using a 555 timer chip to measure the subtle changes in capacitance, and feeding it into two pulse counter inputs that the C64 has. Every video cycle, he pulls the values from those counters, and then resets them. He then maps the values from that into frequency/volume values that he feeds into the SID chip and that produces the sound.

by jart 4y ago

fanf2 4y ago

The C64 comes in after the 11:30 mark when the oscillator output is hooked up to the C64 pulse counters. The software counts pulses per video frame and adjusts the sound accordingly.

Luc 4y ago

> This guy would also have more impact doing videos if he had more light and relaxation. He's done so much cool stuff I bought a Pocket Operator pretty much because he developed it: https://www.linusakesson.net/music/po-2x/index.php https://www.linusakesson.net/music/po-2x/index.php

soegaard 4y ago

No need to worry about lack of impact due to low light, when you have treasures like the Craft project: https://www.youtube.com/watch?v=sNCqrylNY-0 https://www.youtube.com/watch?v=sNCqrylNY-0 A single microcontroller (ATMega88) produces both graphics and sound in this demo. More info: http://www.linusakesson.net/scene/craft/ http://www.linusakesson.net/scene/craft/

jasonjayr 4y ago

He is using a 555 timer chip to measure the subtle changes in capacitance, and feeding it into two pulse counter inputs that the C64 has. Every video cycle, he pulls the values from those counters, and then resets them. He then maps the values from that into frequency/volume values that he feeds into the SID chip and that produces the sound.