I've been trying to develop accessories with Arduino for the Android phone starting with some of the projects in Simon Monk's book "Arduino + Android Projects for the Evil Genius". I have a Nexus S phone with Android 4.1 (Jelly Bean).
After installing software on both devices(phone and Arduino), the Arduino IDE serial monitor is outputing the following:
Device addressed... Requesting device descriptor.
found possible device. swithcing to serial mode
could not read device protocol version.
Any help would be greatly appreciated. (Perhaps there should be a category for smartphone connectivity on this forum).
Ron