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   Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:25 JST Cato

   Gonna make some big 16 segment RGB modules :3

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:06 JST Cato

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

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:08 JST Cato

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

     Puniko ? repeated this.
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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:09 JST Cato

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     Diffusor plates arrived and I drilled the first one.

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:10 JST Cato

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     3D printing all the light separators...

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:12 JST Cato

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

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:14 JST Cato

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

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:16 JST Cato

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     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

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:17 JST Cato

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     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!

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:18 JST Cato

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     First signs of life :D

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:19 JST Cato

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     Aaand all done!

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:21 JST Cato

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     980 LEDs assembled :D

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:22 JST Cato

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     Reflow went well!

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:23 JST Cato

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

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     Cato (cato@chaos.social)'s status on Tuesday, 20-Dec-2022 05:55:24 JST Cato

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

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     Puniko ? (puniko@mk.absturztau.be)'s status on Tuesday, 20-Dec-2022 05:55:27 JST Puniko ?

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     @cato@chaos.social FARBEN! :anya_whoaa: