An LED that will be on or off.
Project tutorial by Tudose Matei
An Arduino Uno with DHT11 sensor module, three LEDs and a Piezo speaker.
Ten LEDs connected to an Arduino Uno and a potentiometer.
Build a voice-controlled robot in an hour. You will use Echo, Alexa, Heroku, Google Firebase, Android, and of course Arduino. Lots of fun!
Project tutorial by Łukasz Budnik
Send Bytes to an 8x8 LED Matrix
4 digit 7 segment Led display
Ok , I will add a resistor soon and thank you for this suggestion ! :)
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