You can now buy the ESP32-S31 development board, and it's pretty cheap

XDA developers | July 28, 2026, 11:10 p.m. | Original
It has some nice new capabilities, too.
I set up TrueNAS on Proxmox the way iXsystems recommends, and it works surprisingly well This $40 ESP32-S3 AMOLED map shows where you are without an internet connection