Error Opening Serial Port Arduino Ubuntu
I'm using the Arduino IDE in Ubuntu, and am having issues with the serial port. It has worked in the past, but for reasons that may be unnecesary, I felt the need to change the ownership of some of the files from root ownership to my users ownership.This made the IDE work correctly, but I lost the ability to use the correct serial port.
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In the dev folder, the port I need is listed as permission 166. Someone (who is no longer in the area to help me) swapped the permissions to 666, which made it all work gloriously.However, it reverted back as soon as I restarted my computer, and if I now try to use the command: sudo chmod 666 ttyACM0nothing happens. No error messages, but no permission change either.How can I change it, and how can I get it to change permanently.I apologize if this question is overly simplistic or unclear, I'm an ubuntu noob, and I wouldn't begrudge feedback!
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How are you connecting to the serial port (what software are you using to received the serial data)? I don't do much with Windows, but I think the problem that you're having is that your terminal emulator is expecting to see the data on your COM1 port but you're actually transmitting the data over USB and a virtual serial port.
The serial monitor in the Arduino IDE picks up the serial port from the setting in the menu Tools Port (which is also used for your upload), but other programs will need it to be explicitly set.–Nov 26 '15 at 20:09. I've got an idea. Your board isn't being recognized.
Error Opening Serial Port Arduino Ubuntu Download
Try unplugging the arduino and see if Com 1 is still there. Sometimes it can recognize mice and other devices as Com 1 or 2 instead of your arduino.On some of my development machines after everything settled out my devices will show up on Com 4 and 5 when I am working on two at a time.If this is not the case go into the device manager and see if you can see the board listed.I would also wonder if you have your sensor hooked to digital pins 0 and 1. These pins are used for your serial line on usb. So if you have anything such as a sensor hooked to them it may be generating data keeping the line busy instead of it being able to negotiate.I had this happen when setting up hc-05 for the first time. I realized I had to keep the chip off while flashing or I would end up with errors or Com busy.Please provide your pinout and basic information about the Com ports available on the ide.