Hi,
I recently have bought an Arduino mega 2560, and when I connect it to my computer (windows 10), the Arduino ide can't upload program on it!
When I click on the upload button, after a long time, it says :
avrdude: ser_open(): can't open device "\\.\COM7": Refused access
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
I have no idea why.
Thank you for helping and sorry for my bad English