Science Buddies: "Ask an Expert"

Can I please have the instructions on how to activate bootloader mode on my ARDUINO UNO R4 MINIMA. I think this is why I keep getting the "exit status 74" error in Arduino IDE.




Moderator note: Projects: https://www.sciencebuddies.org/science- ... -levitator

https://www.sciencebuddies.org/science- ... c-feedback

Hi - please see our Arduino troubleshooting guide: https://www.sciencebuddies.org/science- ... ting-guide. There are other steps you can take if you encounter the exit status 74 error - try double-pressing the reset button after you encounter the error, then try uploading your program again.

I followed all of step 1, but when it came to step 2: Download the ultrasonic_levitator_digitalWrite.ino example code, I downloaded it and attempted to upload what was there (on the Audio IDE app) but it said, "Upload error: Failed uploading: uploading error: exit status 74". I've tried over and over. How do I get rid of error 74 in Audino IDE? I am using the Audino UNO R4 MINIMA which was linked on the ultrasonic levitator project page from the Science Buddies website. Please help, thank you.

Hello,

As you can see, I've merged your most recent post with the thread from your first post that also shows the expert's response.

Keeping your posts on this topic in the same thread helps the expert see your follow-up questions.

Thanks and best of luck with your project.

Madeline
Moderator

Hi - since it looks like you posted twice, I want to make sure you saw my previous reply with a link to our Arduino troubleshooting page. Please let us know if you have tried any of the steps there, including double-pressing the reset button on the Arduino board.


https://www.sciencebuddies.org/science- ... ting-guide

Thanks for the guide link, you made my day.