Uploaded September 2017 | Updated September 2026, 1 week ago

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Fidget spinner tachometer update - now using big LED Matrix display.

Parts:
- Arduino Pro Mini
- MAX7219 LED Matrix
- A3144 Hall effect sensor
- Neodymium magnet for spinner
- button for changing display modes

More details about software features and used hardware:
youtu.be/42qNfPOYlR8

Source code:
github.com/cbm80amiga/LEDMatrix_tacho