The tiny handheld console features a round display and is powered by an Arduino Nano ESP32 ... a 1.28″ round GC9A01-driven TFT LCD, a handful of jumper wires, and a few buttons.

When the reader sees a nearby card, the information is parsed through the Nano and the data is both sent to an LCD screen and stored to a .txt file on a removable microSD card for later retrieval.

in this case an Arduino Nano. Whereas a typical scale would then simply show the resulting number on an LCD display, [Mirko] decided to use a moving coil meter driven by the Arduino’s analog output.