Silicon Lab’s basics of USB Human interface device (HID) and how this class communicate to PCs. Link here (PDF) The Human Interface Device (HID) class specification allows designers to create USB-based devices and applications without the need for custom driver development.
Dilshan Jayakody writes: This is an automatic “monitor brightness controller” based on environmental light conditions. This system use USB port base sensor unit to measure the light level and control monitor brightness accordingly. We design this system to reduce the eye stress by matching the monitor brightness with environmental lighting. Project info at Dilshan Jayakody’s blog.
András Veres-Szentkirályi, IT security expert, OSCP, GWAPT, writes, “I’ve built a device that acts as a USB HID keyboard, enters a script as a series of keystrokes into a PC, which can extract itself into an executable. This in turn can send files on the PC back to the device using the NUM/CAPS/SCROLL lock LED […]
Dolabra is designing Donatello, a Part Ninja and Superprobe combo. Instead of having a display on the board, like the Superprobe and Part Ninja, he delegated the display to a host computer over USB. My intention is to make a combination part ninja and super probe. The idea is a USB device and a couple […]
Dolabra took up the task to add support for the HID class to Hoken and JTR’s open source USB stack. Up till now it only supported the CDC class, and HID is still a long way away, but progress has been made. Yeah! a small victory. I got a set of descriptors that enumerate! The […]
Kiran updated the firmware on his DIY joystick. It features 10 buttons and an analog joystick all controlled via a PIC18F14K50 USB microcontroller. The firmware update provides mapping for all 10 buttons, while the next update will add functionality to the analog stick.
Kiran designed a USB Joystick based on the PIC18F14K50 microcontroller. It has 10 buttons and an analog Joystick that uses 2 potentiometers to describe X and Y movement of the stick. The firmware is based on the Microchip USB stack, using the HID device class.
High intensity discharge ballasts, used in cars today, require a large set of analog controllers to ignite an HID bulb and reach steady-state operation. This reference design from Microchip describes how to make an HID ballast using a dsPIC and a few discrete components. The reference design uses 9-16VDC and outputs 35W of steady state […]
DataBot Mouse from Jan Barth on Vimeo. The DataBot is a specially modified mouse prototype that communicates three different data properties to the user. For example, it can indicate the size of files, the user-assigned importance or the file’s relative activity (times accessed.) The hardware mod involves the installation of a small servo-motor inside an […]
LUFA (Lightweight USB Framework for AVRs) is an open-source complete USB stack for the USB-enabled Atmel AT90USBxxxx and ATMEGAxxUx AVR microcontroller series, released under the MIT License. Darran from Arduino Hacking has released the source, hex files, and sample sketches for his Arduino LUFA hacks for Keyboard HID, Mouse HID, and USB MIDI drivers for […]
Here’s a keyboard-glove prototype in development by Jeff Rowberg. The Keyglove is a glove-based USB input device that provides full keyboard control, designed for wearable and mobile computing and to assist the disabled. According to Jeff: The Keyglove is a portable Arduino/AVR-powered glove that uses touch combinations (for keys) and an accelerometer (for the mouse) […]
Henryk Plötz and Milosch Meriac gave a presentation at the recent 27C3 Chaos Communications Congress in Berlin, Germany, in which they demystified the HID iClass. One of the challenges of breaking iCLASS RFID readers was to extract the firmware and the security keys of RW400 readers without leaving visible traces like breaking the case open. […]
Parallax has introduced their Optical Finger Navigation (OFN) sensor module. This HID is designed to sense the presence of a finger and track its movement much like a mouse. Interfacing is via I2C, supply voltage between 3.3 and 5.5 volts, and convenient 0.1″ pin spacing for breadboarding. A detailed review will be forthcoming. The datasheet […]
We like the professional look of this USB PIC (18F2550) project from WaitingForFriday. Analog VU meters and an RGB LED show system stats like CPU use, network speed, and hard disk activity. The PIC enumerates as a driver-less USB HID device with a firmware based on the Microchip USB stack. via Hackaday