Help making bare minimum standalone arduino.

Using Arduino Project Guidance
20

I was recently working on this type of thing as well. Two things I had trouble with -

  1. I burnt the bootloader on the new chip using another arduino. When doing this don't forget to disable by putting a 120 ohm resistor between 5v and reset on the arduino doing the burning.

  2. I never was able to upload a sketch onto my breadboarded arduino. I resorted to programming it in an arduino and then popping it out and putting it in my breadboard rig. Works but not very elegant.