I am attempting to build a circuit that turns a servo motor when a temperature sensor detects that the temp has risen above a certain threshold. I am able to upload code to my board when the servo is unplugged, but when I plug it back in, I am no longer able to upload the code or view the serial monitor in my program.
Here is the error message:
avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
[Solved] I realized that by simply flipping over all of the wiring to the opposite side of the breadboard, the problem was fixed. I have no clue why this made a difference, but it did.