I've got a lot of language projects. The latest one is a very low-cost, programmable audio player (no screen even, but lots of buttons and colored LEDs). You cr

I've got a lot of language projects. The latest one is a very low-cost, programmable audio player (no screen even, but lots of buttons and colored LEDs). You create non-linear, interactive materials. I was going to make another 'Show HN' when I have the firmware ready. Send me an email (on my profile), I'm interested to hear your idea.