A simple sound intensity meter. Using an analog port on an arduino. The sound intensity range is shown by the different color of an RGB led.
by João Pereira
A robot with a sonar sensor.
Project showcase by João Pereira
A simple time count (down) with 7-segments displays.
An Arduino based MP3 player with 30 levels of volume adjustment, 5 levels of EQ adjustment, and a pretty cool retro looking UI.
Project tutorial by Neutrino
A simple circuit for measuring electrical current with Arduino.
Project tutorial by Giovanni Carrera
Build your own Nixie tube clock/thermometer/display with ease.
Project tutorial by Grisha Anofriev
Não cheguei a fazer o esquema. Quando fizer coloco-o aqui. Mas pelos comentários no código é fácil replicar.
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