This video by Ray Wang demonstrates HID-class USB serial communication for AVRs using the V-USB library: Serial communication is helpful for debugging and checking sensor values, and HID-class means it can work on all operating systems without driver installation. This is useful for many software-only USB projects such as based on ATmega328 or ATtiny45/85. To receive and send messages between the […]
JTR and Dolabra dug into adding the HID class to the open source USB stack for PIC microcontrollers. A few days ago they succeeded in interfacing a custom piece of software with the a PIC18F14K50 microcontroller using the HID class. Via the forum.