What do I need to troubleshoot my Arduino?

What do I need to troubleshoot my Arduino?

They include: the drivers for the board, the board and serial port selections in the Arduino software, access to the serial port, the physical connection to the board, the firmware on the 8U2 (on the Uno and Mega 2560), the bootloader on the main microcontroller on the board, the microcontroller’s fuse settings, and more.

What happens when voltage exceeds 9V on Arduino?

This voltage is directly connected to the Arduino 3.3V regulator and any other shields or devices that are powered by this connector pin. If the voltage exceeds 9V, the 3.3V regulator will be destroyed and may allow current to flow backwards to the 5V node, and then backwards further to the PC’s USB port.

Why does my Arduino keep crashing my Computer?

The Arduino software scans all the serial (COM) ports on your computer when it starts and when you open the Tools menu, and these networked ports can sometimes cause large delays or crashes. Make sure you don’t have firewall software that blocks access to the serial port (e.g. ZoneAlarm ).

What happens if I upload a wrong program to my Arduino?

There are many pieces involved in getting a program onto your Arduino board, and if any of them aren’t right, the upload can fail.

Why is my Arduino Uno not connecting to my computer?

First make sure your board is on (the green LED is on) and connected to the computer. The Arduino Uno and Mega 2560 may have trouble connecting to a Mac through a USB hub. If nothing appears in your “Tools > Serial Port” menu, try plugging the board directly to your computer and restarting the Arduino IDE.

Why does my Arduino keep sending new sketches?

Most likely because you are sending serial data to the board when it firsts turns on. During the first few seconds, the bootloader (a program pre-burned onto the chip on the board) listens for the computer to send it a new sketch to be uploaded to the board.

Is there a problem with uploading files to Arduino?

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions. option enabled in File → Preferences. Remove any connections to pins 0 and 1 on your Arduino board. These pins are used for communication with your computer, including uploads. Connecting anything to these pins can interfere with uploads.

How does an Arduino communicate with multiple devices?

UART: single P2P comm, 115 kbps max. I don’t fully agree with it. You can send via UART to multiple devices, but then you have to handle the addressing in software. But other than that, UART is very easy to debug as Arduinos often have an USB connection.

How can I tell if my Arduino is connected to my computer?

Additional menu items should appear relative to when you open the menu without the Arduino connected to your computer. Note that it shouldn’t matter what name the Arduino board’s serial port gets assigned as long as that’s the one you pick from the menu.