X Window System on the ESP32

Sergey Zorin, with help from Claude, released Woodland X11, a port of the core X Window System server to the ESP32-S3 microcontroller, hosted on GitHub at serg5z/woodland-x11. The port targets the Elecrow CrowPanel Advance 4.3", which pairs an ESP32-S3-N16R8 with an 800×480 RGB565 IPS panel and GT911 touch, and runs without extensions, using the finger as the Xcursor plus two-finger scroll and no keyboard. It runs classic X applications such as xclock, xcalc and xeyes over WiFi or a wired connection.

There are a lot of things you can do with an Xserver, but run it on a microcontroller? Well, if that microcontroller is an ESP32-S3, Sergey Zorin – and Claude– have got you covered with Woodland X11 https://github.com/serg5z/woodland-x11 , a full-featured port of everyone’s favourite XServer. Now, it is just the core Xserver with no extensions, and currently targeted specifically at the Elecrow CrowPanel Advance 4.3″, a device that packages an ESP32-S3-N16R8 with an 800×480 RGB565 IPS panel and GT911 touch. In this implementation, your finger is the Xcursor. There’s even two-finger scroll implemented, though no keyboard. As you can see in the demo video embedded below, it works well enough for those oldschool X applications like xclock, xcalc and– crucially – xeyes. What’s the point of an Xserver without googly eyes, anyway? In reality, you’re not likely to set this up just for Xeyes, but the idea of having bringing Linux applications to a little display via WiFi or — as in the video– wired connection has no limit of use cases. Try that with Wayland https://hackaday.com/2025/07/28/wayland-will-never-be-ready-for-every-x11-user/ Considering X11’s vintage, it is perhaps not surprising that it fits on the ESP32-S3, a chip we’ve seen emulate an entire 386 PC https://hackaday.com/2025/11/13/tiny386-on-an-espressif-esp32-s3/ before– a PC that could run an Xserver, for you youngun’s. Thanks to Sergey for the tip