Open Hardware/Modding: GNU-like Mobile Linux, Raspberry Pi, and More

posted by Roy Schestowitz on Sep 20, 2025

• Linux Links ☛ Benchmarking the Radxa ROCK 4D Single Board Computer

  For this article in the series I put the Radxa ROCK 4D single board computer through a series of benchmarks.

• Hackaday ☛ Worst Clock Ever Teaches You QR Codes

  [WhiskeyTangoHotel] wrote in with his newest clock build — and he did warn us that it was minimalist and maybe less than useful. Indeed, it is nothing more than a super-cheap ESP32-C3 breakout board with an OLED screen and some code. Worse, you can’t even tell the time on it without pointing your cell phone at the QR code it generates. Plot twist: you skip the QR code and check the time on your phone.

• HiR ☛ Raspberry Pi Home-Lab IDS with Suricata and Wazuh

  I recently set up Suricata IDS in my home lab again as part of a re-build.  
  You'll need a RaspberryPi 3, 4 or 5 and an inexpensive smart switch that can mirror traffic from your home lab environment.

  
  I opted for the TP-Link TL-SG105e and TL-SG-108e switches for my home lab, with 5 and 8 1GBPS ports, respectively. I've been using these switches for years and they seem to be popular in the homelab community. 

  I think the 4GB Raspberry Pi 4 is probably a good balance of affordability and resources. This setup was just a little sluggish on the Pi 3, but it worked fine once it was up and running. On 32-bit platforms like the Raspberry Pi 2, only older versions of Suricata seem to be available.

• Linux On Mobile ☛ 2025-09-14 [Older] Weekly GNU-like Mobile Linux Update (37/2025): Alarm Week