your are a monster! I like it.
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Hi sven, I just want to say “Thank you” for publishing your drawing.
After having completed my hand-wired adapter board, the display didn’t work, until I realized (thanks to your drawing) that I had confused “SPI TX” with “UART TX”. Now that I have fixed this, my little Raspberry Pi W (no “2”) works nicely, without X11.
I know I am a bit late to the party, but I wanted to share my enthusiasm about the little success I’ve just had, thanks to your efforts here.
I have soldered a small board directly to a Raspeberry Pi Zero (no “2”), connecting the 11 wires necessary. Initially, I had a little hickup where I mixed up SPI1_TX with UART TX, which I could resolve thanks to sven’s drawing. Other than that, the Pi Zero runs Trixie, where I have applied the code from michael_mayer’s GitHub - ironat/picocalc_trixie . This just works - thank you very much.
I wish you all a lovely 2026 – Olav
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I have a question, maybe somebody has found a solution.
A Bluetooth mouse was happy to connect. I‘ve managed to run X11, using i3 as Windows Manager.
Now I‘ve noticed that all keys with yellow second functions (Space, B, <, >) have the ALT key auto-applied. <> change the Display brightness, for example. This only happens under X11. On the console, no such problem exists.
Best,
— Olav
with Trixie 32, did not notice that…
My problem is that can not set up virtual desktop, for example
xrandr --fb 640x480 --output Unknown19-1 --mode 320x320 --panning 640x480
–output 19-1 and all other combination reporting an error instead of extended virtual desktop. Pure xandr run producing:
>xrandr
Screen 0: minimum 320x200, current 320x320, maximum 320x320
Unknown19-1 connected 320x320+0+0
HDMI-1-1 disconnected
And because yesterday I had to answer the soul-crushing question by a loved one “Now, what is it good for?” Shortly after that, I managed (it was trivial) to compile and run Decker on it. In its own words: “Decker is a multimedia platform for creating and sharing interactive documents, with sound, images, hypertext, and scripted behavior.”
With my bluetooth mouse connected, I can now draw and code little apps on the PicoCalc screen, using the included tools or the Lilt scripting language.
The only hurdle I had to overcome was that I needed to prepare an initial .deck file for the small screen size of 320x320. As the file format ist simply text, I could edit any of the included examples and save it as my initial Deck.
With Decker installed, the PicoCalc comes very close to the vision of a Dynabook, a dedicated small machine for digital creativity.
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It has worked for me with wayland.
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Got an update on the mipi-dbi-spi driver - it is working on gnome Wayland, I think it is only issue on X11 and shell. Thanks to that I have managed to get Isaac rebirth working with ok fps, bit hot as there is still no heatsink inside.
Also, anyone knows how to get fps counter? Steam in-built one does not work nor does mangohud
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Does anyone have a solution for windows opening outside of the screen? Because in my case the taskbar and everything fits in the screen, but when i open an window, it opens outside of the screen and then i have to manually drag the window into the screen when i want to use the hidden part of the window…..
Is this with the Radxa Zero 3w? Please mention if you using a differnt board, otherwise it would be confusion for other readers.
yes, sorry. it is on the radxa zero 3 w. form what I understand it is a DRM related issue. also got a few other games to work too, rocket League works but it is very slow (5-7 fps), would be cool to make it playable, always wanted to have something handheld to play it
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This is my system info.
Regarding the Wayland it seems that is supported on experimental level for advanced user - which is hardly my case 
ok, I see. I think we have to wait a while until xfce is supported in wayland.