Building a standalone Arduino from scratch and programming it with ICSP

We thought this might be a good topic for the site as it’s something we have done recently, this article will explain how to set up your standalone Arduino project on a breadboard. This will also include uploading your program code via the ICSP connections. This isn’t technically “an Arduino” as we will be not including some components, such as a USB connection, reset switch or any on-board LEDs.

The end result will be a breadboard and your Arduino project running on it, without an actual Arduino board.
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