Unable to open serial port

[TIMAI2]

This might help:

Serial - Can I Use Serial Component to Read from a USB Device?

Hi, I have a USB device that outputs text messages. I connected it to Android phone using OTG adapter. Now, in my AI2 app, I'd like to connect to the device, read from it, and display received data (text). I have this code: [image] When executed, the code fails on call to OpenSerial: [image] Any ideas how to fix this? I know that the device works fine. (I can plug in into a USB port on a laptop and read data from it using python.) Also, the Android phone I am using does support OTG. …