I am trying to upload a hex file for an ATmega328P to my Arduino Uno.
I have the correct settings in avrdude, but when I try and upload it through the command line, this error pops up. What could be wrong? -Are you sure that your programmer is plugged in correctly? -Did you change any of the setting on either device before or since uploading the hex file? Look at both devices’ connections and make sure they are completely secure. Check all cables and make sure there is enough slack if needed so nothing gets pinched while plugging in or unplugging anything from computers/electronics desktops. Make sure everything has power as well by checking outlets with circuit breakers and power strips. *If nothing seems to be wrong with the hardware, it could have something to do with your computer or operating system settings on the Arduino IDE. Check that your fuses are correct in both devices by comparing them against a reference image or table online if you don’t remember what they were set as originally.* *You can also try using an external programmer instead of doing everything through command line; this way there is less chance for error due to connection issues between different computers/operating systems.* -Are you sure that your programmer is plugged in correctly? -Did you change any of the setting on either device before or since uploading the hex file? Look at both devices’ connections and make sure
