Posted December 24, 2019 by Chris

“Build a USB LED torch using a clear white LED, resistor and type A USB connector. This easy project for beginners in electronics requires some soldering.”

Posted July 25, 2015 by Chris

"This project is a USB based computer status display. Downloads at the bottom of the page…The firmware uses microchips USB stack. The files included in the USB folder are from the ‘Microchip Libraries of Applications’ I used version v2012-08-22 of this…The support application was written in C#. Some things of note…the file HIDInterface.cs is an invisible form."

Posted May 27, 2015 by Chris

"The device runs in both host and peripheral USB modes however in this design only the host connection has been used since i already had a peripheral interface breakout board already and therefore didn’t need this capability."

Posted May 26, 2015 by Chris

"The sound card runs at a sample rate of 48KHz, 32KHz or 24KHz selectable by the OS with 12 bits per sample. The quality approaches commercial grade as the sample rate is higher then CDs. 44.1KHz was not implemented due to the difficultly and additional processing overhead."

Posted March 5, 2015 by Chris

"This is a simple 6 port USB device charger with a individual current monitor on each port. The charging current is indicated using RGB LEDs. Blue means slow charge, green means 250mA to 750mA, red means over 750mA, and purple means over 1500mA. This circuit involves an ATmega328P, INA169, and a OKR-T10-W12."

Posted February 15, 2015 by Chris

"As you probably know, V-USB is a very useful software-only implementation of low-speed USB device for AVR microcontrollers. It adds USB functionality for almost any AVR, particularly for those without hardware USB functionality. With this, it’s possible to make a very low-cost standalone Arduino with USB port and without having to use an FTDI chip."

Posted January 29, 2015 by Chris

"If you open a common optical mouse you will most likely find two chips inside — one being a general purpose micro-controller and the other an optical mouse senor. The sensor captures images of the surface below the mouse at high frame rate. It uses captured images to calculate the displacement the mouse is moved over time. Incidentally, it is also able to provide the raw image data. "

Posted December 5, 2014 by Chris

"LCD2USB is a open source/open hardware project. The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB. LCD2USB was meant to be cheap and to be made of easily available parts. It is therefore based on the Atmel AVR Mega8 CPU and does not require any difficult to obtain parts like separate USB controllers and the like."

Posted September 18, 2014 by Chris

"Are you struggling to see if your caps-lock is enabled? Typing in incorrect passwords, because of this? Robin can be of assistance. He will also warn you if you are toggling caps-lock to quickly."

Posted September 11, 2014 by Chris

"I’ve developed a framework for producing USB devices which covers both the Windows host-side application development and the PIC18F firmware itself. The framework consists of a Visual Studio C# class library, a windows reference application, a simple USB hardware reference design and a PIC18F4550 firmware which communicates with the class library."