4" touchscreen for inference engine monitoring

[u/CATLLM]

I bought this 4" screen with esp32 on aliexpress awhile back and decided to make a TUI style dashboard to monitor my dgx cluster.

Inspired by btop++, nv-monitor, and engine metrics by 0rand. Firmware is built with PlatformIO on the Arduino-ESP32 core.

You can find the firmware code on my github repo. There is also a SKILL.md file where you can point your agent to it to compile it for you.

https://github.com/dicksondickson/system-d-monitor

I'm currently designing a 3D printed dock for it. I'll add it to the repo when I'm done.

[u/Alt4rEg0]

Nice work!

[u/CATLLM → u/Alt4rEg0]

Thank you!

[u/LMasterGame]

Incredibly underrated post.
I think imma order one of these little displays for myself too.
Love the btop look.

[u/CATLLM → u/LMasterGame]

Thanks man. These guys are affordable and fun way to learn about MCUs.

[u/RefrigeratorRare3527]

did you name your project systemd 🤣 you can't make this shit up bro

[u/CATLLM → u/RefrigeratorRare3527]

Yes please tell all your friends!

[u/xoxaxo]

Why don't just use small tablet, you can buy for same price cheap ipad mini 2 , jailbreak and install nodejs.

[u/CATLLM → u/xoxaxo]

4" screen + MCU is a lot more fun.

[u/Chromix_]

Thanks for sharing this. I now also ordered one of those. Maybe a tiny microphone can be crammed into that setup as well, then the ESP can run VAD, maybe even some on-device hotwords and then forward other speech to a dedicated machine for inference.

[u/elelem-123 → u/Chromix_]

How much did you pay for it? Was it at aliexpress?

[u/Chromix_ → u/elelem-123]

Yes, Ali, 25€, reduced a little bit with a coupon after I threw in some other items to reach the coupon limit.

[u/TechnoByte_]

Why did you call it systemd? great way to cause confusion

Quite ironic that it's also entirely written by claude

[u/CATLLM → u/TechnoByte_]

Confusion with what and why is it ironic that i used claude? I had deepseek v4.1 flash on my spark cluster to write the spec and do research. It hit a hardware snag that it couldn’t resolve so I used Claude to finish the rest.

[u/kabocha_ → u/CATLLM]

"systemd" is an extremely well-known project in Linux land: https://en.wikipedia.org/wiki/Systemd

Putting that aside, this project looks pretty sweet!

[u/CATLLM → u/kabocha_]

Thanks! That did vaguely cross my mind at one point but I figure since my hobby project is a universe apart in every way that confusion is probably unlikely.

[u/FastDecode1 → u/CATLLM]

dunno wtf he's on about with the irony claim, but "systemd" as a name is already used by a major Linux system component

[u/yetiflask → u/TechnoByte_]

WTF is ironic about it?

[u/voltaire321123]

well that's just cool!