Pin 15 on the IC is actually the pin for Digital Pin 9 (D9) on the Arduino. If you want to see the pinout for the ATmega328 IC, refer the “Pin Mapping” diagram.

In this article I will add some simple Arduino LED projects starting with basic ones like how to turn on an LED, blinking, and more. Every step will have the code, the schematic, photos of the project ...

If you like decorating your house for the holidays, these digital LEDs save the trouble of manual teardowns by using Arduino to modify animation effects each season.

[Jose’s] latest project brings an old visual effect toy up to date with digital electronics. Most of us are familiar with inexpensive kaleidoscope toys. Some of us have even built cheap versi… ...

We got it running on an Arduino Leonardo the quickest, because it has support for Serial1(). Don’t be discouraged by these glitches in this rev 0 deployment — [Eric] has really made quite a ...