Make updating flipdisc easier (presentation topic and/or person's name) #8

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2024-05-15T17:30:08Z

arti commented

2024-05-15 17:30:08 +00:00

Lauri was troubleshooting it before.

Currently the code that controls those displays is in the Terminal Server.

Lauri was troubleshooting it before. Currently the code that controls those displays is in the Terminal Server.

rasmus added this to the (deleted) project 2024-08-16 19:47:26 +00:00

rasmus modified the project from (deleted) to k-space.ee/todo

2024-08-16 19:59:00 +00:00

rasmus commented

2024-08-16 21:20:14 +00:00

Hackathon 2024:

Space path: Reverse engineer low level signalling of the flip-disc displays to start designing ESP32 based driver for them

Lauri hit a wall with some help from @Kristjan in reverse engineering a driver for flipdiscs

Lauri investigated further the flipdisc internals. Uploaded Sigrok Pulseview dump to https://wiki.k-space.ee/en/projects/flip-disc
Overall signalling is somewhat complex (20pins) and uses lots of low level electronic components (NAND dates, 1-to-16 decoders etc). Considerig going back to the original controller board, need to investigate whether the firmware could be decompiled etc https://git.k-space.ee/k-space/mobitec-tools/src/branch/main/firmware
Maybe the baud rate can just easily be cranked up from 9600?

[Hackathon 2024](https://wiki.k-space.ee/en/events/Hackathon2024): > Space path: Reverse engineer low level signalling of the flip-disc displays to start designing ESP32 based driver for them > > Lauri hit a wall with some help from @Kristjan in reverse engineering a driver for flipdiscs > > Lauri investigated further the flipdisc internals. Uploaded Sigrok Pulseview dump to https://wiki.k-space.ee/en/projects/flip-disc > Overall signalling is somewhat complex (20pins) and uses lots of low level electronic components (NAND dates, 1-to-16 decoders etc). Considerig going back to the original controller board, need to investigate whether the firmware could be decompiled etc https://git.k-space.ee/k-space/mobitec-tools/src/branch/main/firmware > Maybe the baud rate can just easily be cranked up from 9600?

rasmus changed title from ~~Create easy way to update the flipdot display text (presentation display topic or persons name)~~ to Make updating flipdisc easier (presentation topic and/or person's name)

2024-08-16 21:20:58 +00:00

rasmus commented

2024-12-12 23:18:02 +00:00

Might find hints from https://flipdots.com/en/products-services/flip-dot-boards-xy5/

lauri commented

2025-04-08 04:43:41 +00:00

Sigrok dump can be downloaded here https://wiki.k-space.ee/en/projects/flip-disc#internals

Overall there is lots of chips on the PCB and it was not trivial to understand the signalling. Perhaps some day you can feed it to LLM and have it decode the signalling

Sigrok dump can be downloaded here [https://wiki.k-space.ee/en/projects/flip-disc#internals](https://wiki.k-space.ee/en/projects/flip-disc#internals) Overall there is lots of chips on the PCB and it was not trivial to understand the signalling. Perhaps some day you can feed it to LLM and have it decode the signalling

👍 1

rasmus commented

2026-01-25 19:34:59 +00:00

The same signs have made their way to 38c3. I think it was from a lightning talk, can't pinpoint the source right away.

mpv-shot0003.png

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Reference: k-space/todo#8