Hey Rongzhong ! Many thanks for the sharing 😊 I'm using the camera : Raspberry Pi NoIR Camera V2 8MP (but bying a NoIR wasn't real needed, the classic one should be enough) As for your question, I have to say I don't know... I'm not even sure to know what is a customized returning message 😥 I'm sorry, I'm still learning 📚

@leukipp Could give me more info please ? I have to confess I don't know what to change when you say : "So boards and bootloader things have now to be done in "~/.arduino15/packages/arduino/hardware/avr/1.8.2/..." and autoreset logic is under "~/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/bin/..". " Moreover, my folder packages doesn't exist in the .arduino15 folder 😶 I have the same "avrdude-original: stk500_getsync()" error with the Arduino version 1.8.12. Do you have a clue please ?

Thank you very much for your help, it perfectly works now ! I guess it was logical, I feel kind of stupid 😫 Just to make sure I got it : the switch in "pi master" position would only be useful if I had a full python code to make Nybble move for instance, but as long as I use the C code (Arduino), the master remains at the "Ar" position ?

Hey, thanks for your message, I'm sorry I haven't seen it before ! That's weird... I have to admit I don't know what your problem is, I don't have this error with my Nybble. Could you send me more details and screenshots of the error(s) ? Maybe I will be able to help you. Have a nice day 🙂

Hi @FuzzyFoyz , Thanks for your kind comment ! As this course is one of the first one for the kids, it has to stay quite "simple" so yes I am using the ultrasonic sensor. I have a lot of projects for the next courses, including a (simple) obstacle avoidance algorithm. I am currently working on computer vision algorithms, and on adding some LCD screens on MiniCat. I am looking forward to showing you the results ! Best regards :)

Thank you very much for your advise ! It will help me for sure.