Cardputer

M5Stack’s Cardputer is the maximalist take on the card form factor: an ESP32-S3 with a clicky 56-key keyboard, a color screen, mic, speaker, and an SD slot, all in a shirt-pocket slab. It records, but it also computes — people run terminals, radios, and automation consoles on it. The SDK is public, the community firmware scene is thriving, and the whole thing costs less than a nice dinner.

Open SDK — ESP-IDF / Arduino / UIFlow, docs public

Volume pricing starts at 100 units. Custom firmware starts at 1,000. Your logo starts at 5,000.

In stock