sketch upload issues

[alexsarasitis]

Hello, just got my new controlllino mini and started experimenting.

I got:

“avrdude: verification error; content mismatch” when trying to upload my sketch.

Please advice.

After many trials it worked for a few uploads and then it stoped again. Also, I was able to reconnect when taking out controllinos power supply, but this could be a coincident.

[Lukas]

Hello,

it seems that you have some interference at the serial line between USB/UART converter MCU and the main MCU.

Do you have any wires connected to the X1 pinheader, please? Especially to lines TXD, RXD or /RESET?

We have already investigated some issues with programming, but these were “permanent” and caused by some corrupted sketch uploaded in the device.

Please see our FAQ here <a href="https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library#faq” class=”bbcode_url”>https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library#faq