Hi. I have an Arduino UNO, and I'm having a giant problem with uploading.
I was having no problem uploading until about ten minutes ago, and suddenly, well, it started not uploading, so the last program is still running. I don't understand why, so I was hoping you guys could give me some pointers. ...Oh, and I'm using most of the digital pins and using a Raspberry Pi (which runs on linux ARM, i guess...I'm not so good with electronics) to program.