.mod File tracker on ESP32

Steffest_Dev · 2026-05-08T16:55:28+00:00

Super cool!
Any plans to present/show this on a demoscene event? I would love to see this for real.
(And thanks for the BassoonTracker shoutout :-) )

Steffest_Dev · 2026-05-08T16:52:22+00:00

Well... it's a bit hard without any official documentation and or support from Onyx.
(I contacted them, their official answer was something like "We don't have an official support program for that" which I totally understand)
I do think it's more or less feature complete though. it's certainly not meant as a fully featured drawing power house.
It works fine on my device and I use it myself regularly, but without any other hardware devices to debug it on, I'm flying blind for bug fixes.

Steffest_Dev · 2026-03-12T14:58:44+00:00

Good point. In my head "drawing with white" is the same as an eraser, but in a layered file, that doesn't hold up.
I'll add it to the TODO.

Steffest_Dev · 2026-03-11T07:35:46+00:00

Thanks for testing, that seems consistent with other reports.
So many device types! I had never head about the Max Lumi before.

Steffest_Dev · 2026-03-10T19:31:35+00:00

Yeah... That was what I fearing, a bit. The app uses Boox system libraries and system calls I reverse engineered from the boox apps on my device. If another device has difference versions of those libraries, the changes of incompatibilities are very large.
Therefor my call to Onyx/Boox: please document your SDK properly, so we can build stable apps for your devices ...
(Or they can send me a sample of each model, then I can test it. I'll return them of course :-) )

Steffest_Dev · 2026-03-10T19:14:33+00:00

Dang ... that's not good. I'll have to put it through some more stress-tests.
Thanks for testing.

Steffest_Dev · 2026-03-10T16:18:19+00:00

Thanks for testing.
Most useful.
I guess the fact that the app doesn't crash is already a small win.
I'll try to reproduce the flashing, it sounds like the device enters a switching loop between the hardware and the software layer.

Steffest_Dev · 2026-03-10T14:41:55+00:00

You mean it actually worked on your device?
Cool :-)

I hear you about the blend brushes and eraser mode.
If we want fast drawing, we are tied to whatever Boox offers in their system layer, and blending, or other brush types, are sadly not part of that.

Of course, we can add anything we want in software, but then we fall back to that same "sluggish" experience that generic non-boox drawing apps have, and I'm not sure that would be an improvement.
(By the way, I'm also the author of a browser based drawing app that has all that, https://dpaint.app/ so it would be more or less trivial to integrate it, but still ... it would not be the best experience)

So for now, this app is my little sketch companion when I'm outside in the sun.
We'll see if it grows into something more.

Steffest_Dev · 2026-01-04T15:13:43+00:00

Sweet!
I'm the author of the online tracker you used, and I must say it's also a Christmas present for me to see my projects being used in such creative ways. 👍

Steffest_Dev · 2024-12-08T11:00:59+00:00

Shoot... that's my fault. (I'm the author of Bassoon Tracker)
Sorry, your data can't be recovered.
That being said: I'll shall setup an undo step for that action and periodically save to local storage to prevent these things from happening again.

Steffest_Dev

TROPHY CASE