Notices by Cato (cato@chaos.social), page 2

PCBs arrived for the 16-segment displays :) looks promising so far.

Late evening at the company to use the PnP machine :)

Reflow went well!

980 LEDs assembled :D

Aaand all done!

First signs of life :D

I noticed random flickering. The usual tweaks like pinning the WS2813 control to one of the ESP32's cores, tweaking task priorities, putting the RMT driver in IRAM etc. didn't help. So I had a look on the oscilloscope. Turns out that, when it glitches, some extra data packets are being sent at the start. This isn't just a timing glitch, it's a data glitch apparently. I'll investigate tomorrow!

Might be a bit anticlimactic, but I didn't investigate. I just switched to using the SPI peripheral instead, sending just the right bytes at just the right frequency to get the right timing patterns, using just the data line and no clock line. This does give me a 11760 byte framebuffer for a 20-character display (980 LEDs), but the ESP32 has more than enough RAM. Now it works glitch-free! :D

Preliminary mounting design - I'd build 4 of those 5-character modules.

Today, the missing connectors finally arrived, so I could wire up all 20 modules. It works perfectly and lights up the room nicely :D

3D printing all the light separators...

Diffusor plates arrived and I drilled the first one.

First module assembled! It works and looks just like I imagined :3

Well, it works! And it's colourful :3

oh my god why is the web view so full of wasted space now

Warteschleifenmusik-Ranking:

1. eprimo
2. Finanzamt Hanau
3. ??????

my package seems to be in trouble... and possibly me too? oh-

OH GOD.