Shit video quality, but it works. Printed in PLA. There's a wire on each side, and a thick wire through the springy bit. When you press the switch the thick wire forms a connection between the other 2 wires. A problem with this design is that sometimes the thick wire only touches 1 of the other wires. You get the tactile feedback that the switch is closed, but it isn't fully closed yet and you still need to press harder. My eventual plan is to produce a working keyboard switch and then print lots and make a keyboard with them. ... https://www.youtube.com/watch?v=m2ko-DP1m60

... https://www.youtube.com/watch?v=HMrTn9Vl2E0

SCAMP is now fast enough and stable enough that it can run the text editor and the compiler on real hardware. It's still pretty slow but there is a bit of low-hanging performance fruit. In particular the clock speed is currently limited by what is convenient to generate on the Arduino rather than by any limitation of the SCAMP hardware, so I expect I should have no problems clocking it higher. Also lots of the I/O code is bad (no userspace buffering, i.e. a full round-trip through the kernel for every single character). But progress is being made, and it pretty clearly all works, which is the main thing I was concerned about. SCAMP is a 16-bit homebrew CPU. You can read more about it on https://github.com/jes/scamp-cpu or https://incoherency.co.uk/blog/tags/cpu.html ... https://www.youtube.com/watch?v=4sBB0iD6XvI

I didn't tighten the chuck enough on the first attempt, so the ring came loose. I did a second attempt on the same ring, which worked really well! Some of the letters are duplicated because of the false start, and the text is distorted because the plastic is too flexible. I just need to remake the hook part in metal to make it stiffer and I think I'll be there. ... https://www.youtube.com/watch?v=wkiZHVjJCKY