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Oscilloscopes come in all different shapes and sizes, and now with just a few discreet components, maker Peter Balch has been able to turn an Arduino Nano into an oscilloscope the size of a matchbox.
The simplest version of this device, which he calls the “ArdOsc,” displays data on a computer screen, but a 1.3” OLED can also be added if you want to use it on its own.
An interesting link found among my daily reading