avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00 When I plug this in, I do see a power light. There are no cables whatsoever connected other than the USB. I have another …

Mar 6, 2018 · My sketch "I2C_scanner.ino" works fine on a Arduino Mega 2560. The computer recognizes port Com 4 (text: "Com 4 (Arduino/Genuino Mega or Mega 2560). When I restart …

Feb 7, 2017 · Hello everyone, I've been using the Arduino Uno R3 SMD Edition for about two months but, just now, I've encountered this issue: avrdude: verification error, first mismatch at …

Sep 19, 2016 · I am new to Arduino. I can't connect to my Arduino Uno. "Port" is grayed out under the tools tab in the IDE, COM and LTP ports do not show up in the device manager, and the …

Jan 22, 2015 · When I connect my first Arduino Uno board with the USB cable to the PC, the green light on the board lights up, and the orange light goes into the blinking mode - indicating …

Nov 10, 2023 · Hijacking is against the Arduino forum rules. The reason is that it may sidetrack the discussion, even preventing the creator of the topic from getting the assistance they need. …

Jul 20, 2025 · Making embedded systems accessible to allTutoriels et cours Cours et tutoriels autour de l’Arduino Le bar -- Espace détente -- Réalisations et Projets Finis Ce sous forum est …

Mar 28, 2019 · Installing Libraries | Arduino Documentation Learn how to install additional libraries in the Arduino IDE 1.

Nov 20, 2016 · Simple problem, need to convert String to const char*. Here is what I have done already:

Jul 16, 2013 · Is there a predefined constant for pi in arduino? Or do you have to define it yourself?