No it's not, you can run lots of useful applications in 64 MiB. Things we are running: - processing data from a marine radar (it streams individual A-scopes as

No it's not, you can run lots of useful applications in 64 MiB. Things we are running: - processing data from a marine radar (it streams individual A-scopes as UDP stream), aggregating the sweeps into a .png image, denoising and uploading and handling some related logic (antenna tilt, gain settings) - weather station pulling in data via serial/GPIO/... and publishing them as a webserver (lighttpd) and uploading them via OpenVPN to a cloud storage; firmware in the sensors can be easily updated and debugged remotely because the system runs avrdude and openocd - emergency serial console - connected via USB to serial adapter to server, and you can SSH into it (again through OpenVPN/Wireguard), open a serial terminal or power-cycle the machine - LoRaWAN gateway And the best thing is that all this was written in Python! (with occasional C functions where native performance is required) So you have all the comfort of a high-level language and a full comfort of a standard Linux stack (though a bit limited because it is Busybox).