This little gadget changes the frequency emitted to a small speaker, allowing you to visualize the changing waveform on an oscilloscope.
Project tutorial by Becky Ellis
Neopixels make a moving rainbow when triggered by a distance less than 1 meter in front of an Ultrasonic sensor.
Phillips made what is called Ambilight, a backlight that responds to what is on screen, but we made it bigger.
Project in progress by Dan Fein
The LEDog collar lights up when it gets dark, helping you locate your dog from far away.
Project showcase by circuito.io team
A very easy Genuino UNO project with LCD and DHT11 temp. and humidity sensor. The LCD shows the temp., humidity and other infos.
Project showcase by interpeo
Thanks so much for the code, I saw where I was making a mistake. I gave you props in my story and linked to you, if that's ok. A little free publicity for ya!
I'm waiting on the edge of my seat for schematics or full instructions!
Terribly sorry to bother you, but I tried to incorporate your suggestions. Thank you!! If you could look at my attached code (the one that says it's for reworking), and see where I went wrong. It's giving me a "rainbow7 was not declared in the scope" error. I tried declaring it as int, float, and double. Didn't work. Not sure how I'm supposed to be declaring it. Any help you provide is greatly appreciated!
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