Hi everyone! I am mostly new to Arduino so I apologise in advance if my dilemma does not seem problematic. I recently downloaded the Arduino IDE 2.3.4 on windows 11 using my school laptop (Acer Travelmate IP). However, when I go to upload my most recent sketch (eg. making an LED blink), the softwar…

The uploaded sketch will run until you upload a different sketch over it.

FQBN: arduino:avr:nano Using board 'nano' from platform in folder: C:\Users\s29012\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6 Using core 'arduino' from platform in folder: C:\Users\s29012\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6 Detecting libraries used... C:\Us…

Hi ptillisch, This was my output after following your instructions. Thank you for the helpful advice.

Thank you van_der_decken, Sorry about the misleading picture. I have tried to upload this sketch multiple times without any luck. I hope this clarifies my problem.

[image] maestro47: avrdude: ser_open(): can't open device "\\.\COM4": Access is denied. Do you by chance have the serial monitor open? If so, close it and try again. If not, look for some other program that has that com port open.

Hi van_der_decken I closed the monitor. When this didn't work, I tried the other com ports. Whenever I did this, the same error code appeared. Would you happento know what it means? Thank you.

[quote="maestro47, post:8, topic:1333653, full:true"] Hi van_der_decken I closed the monitor. When this didn't work, I tried the other com ports. Whenever I did this, the same error code appeared. Would you happento know what it means? Thank you. P.S: Sorry about the first message FQBN: arduino…

Restart your computer and then try the upload again. In rare occasions, a glitch causes the port to get stuck open. This is one possible cause of the upload error. Restarting your computer restores the port to the normal working state and so fixes that particular cause of the error. If the upload s…

Hi ptsillisch, I restarted my laptop and tried uploading using multiple monitors. None of them worked. The error code was the same each time with a few hidden variables. Do you know what this means? Thanks again. FQBN: arduino:avr:nano Using board 'nano' from platform in folder: C:\Users\s29012\A…

That's progress. You are able to communicate with the port now. Since it's a Nano, you may have one with the old bootloader. Try switching to that and see if it's any better.

Hi van_der_decken, Apologies if I have failed to understand the advice you have given me ( I am still very new to Arduino) . Just to clarify, are you suggesting I burn my current bootloader in Tools Settings? Thanks again.

Uploading difficulties on Arduino 2.3.4 windows

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Uploading difficulties on Arduino 2.3.4 windows

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