I made a visual bloom filter that uses the 64 LEDs of the Pimoroni Unicorn Hat to represent bits in the filter. I built a front end with Bulma and vanilla JavaScript and a backend API using Flask in Python.
Full write up: https://simonprickett.dev/visual-bloom-filter-with-raspberry-pi/
Code: https://github.com/simonprickett/visual-bloom-filter-for-pi
Next step - 256 LEDs with the Unicorn Hat HD?
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Visual Bloom Filter with Python, Bulma, JavaScript and Pimoroni Unicorn Hat for Raspberry Pi! | NatokHD