Rugged printed case for a Raspberry Pi 2/3/3B with a 2.2" 320×240 6-button TFT display — purpose-built for running Raspbian Lite with a minimal but complete physical UI.

Python tool for validating cellular SIM activation on a Digi WR21 router — auto-detects carrier, cycles through known APNs, and reports results via a 2-line I²C LCD with RGB rotary encoder interface.