I have been using an Uno to program my Arduino Pro-mini and it was working perfectly fine with uploading code, but it now keeps popping up with an error message. The green LED blinks green when it is on and i have tried holding down the reset button when uploading but it still does not work. I am pretty new to coding and programming and I do not really understand what to do and when I tried to do some research I was at a lose. Thank you for your help.
Sorry I just realized I posted this in the Project Section.
Error message:
Arduino: 1.8.9 (Mac OS X), Board: "Arduino Pro or Pro Mini, ATmega328P (5V, 16 MHz)"
Sketch uses 930 bytes (3%) of program storage space. Maximum is 30720 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: verification error, first mismatch at byte 0x0000
0xff != 0x0c
avrdude: verification error; content mismatch
avrdude: verification error; content mismatch
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
Here is a picture of my set up and the other is a diagram to the pins that I have connected. I have tried unplugging then plugging back in the power supply on both the pro mini and the uno and the same error pops up. I do not know the program that is on the Uno, but I was able to program the pro mini with the same connections with the Uno but then it stopped working and it now pops up with that avrdude error. I have tried using different wires and an FTDI and the message still pops up. Thank you for your time.
The images didn't attach so I found this one that is slightly how I set mine up. The only difference is instead of putting the GND to Reset on the Uno, I put the reset from the Uno to the GRN on the Pro mini.
