It’s also a pretty safe bet you’d end up running it on some variation of the Arduino sitting in a motor controller breakout board ... to port Grbl to the ESP32 board. Price wise the Arduino ...
The latest is the TTGO T-Call, an ESP32 breakout board that also has a cellular modem. Yes, it’s only a 2G modem, but that still works in a lot of places, and the whole thing is $15. On board ...
The Sensy32 Board is a compact sensor platform powered by Espressif’s flagship ESP32-S3 WiFi and Bluetooth microcontroller.
If you want a gorgeous e-paper weather display, the design work has already been done for you with this ESP32 project.