Uno-based battery-powered PM10 / PM2.5 analyzer with bright large digits on an OLED display.
Project tutorial by plouc68000
This 12 pushbutton piano plays the 4th octave with an optional added 3rd and 5th octave, controls note length and pitch with two pots.
Project in progress by fr_pal
In this project some brilliant ideas found in the Internet are combined together.
Project tutorial by Alexander
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