Mikroelektronika present you a new product- USB Charger board. You have probably charged your Li-Ion or Li-Poly batteries using large and heavy adapters, or some more advanced electronics. But those days are over. For a price of one battery, you can have a fast and reliable charger with MCP73832 charge management controller, powered directly from [...]

Today i created pcb for Lithium Ion / Lithium Polymer USB Battery Charger with MAX1811, and designed with eagle pcb software.  About Max1811 The MAX1811 is a single-cell lithium-ion (Li+) battery charger that can be powered directly from a USB port or from an external supply up to 6.5V. It has a 0.5% overall battery [...]

Mikroelektronika release a new USB Reg board. USB REG board is a solution for powering your device over USB connection. It gives 5V directly from USB, but also features MC33269DT power regulator circut for creating 3.3V reference. Board is very small and can be easily integrated in your prototype as well as in your final [...]

If you’re like me, you may or may not have secret files plotting world domination and other devious deeds. These files obviously need to be hidden from the prying eyes of sisters, FBI agents, grandparents, etc. We are going to convert a phone jack in the wall into a secret USB memory device. Source: stonehenge360

This simple device allows you to check the correct working of the USB ports of any computer, using a green led and message from your operative system.It will allow you to test the proper assembly of any port without risking any expensive device.If you normally work fixing computers this is a must in your tool [...]

eMail Light project is to indicate the presence of emails that are currently on my email server with a flashing LED. I am often not right at my desk and I would like to know if I have email. Or I am near my desk, but my screen saver has kicked in while I’m working [...]

The software is based on the HID demo from Microchip and has been adapted to interface the sensor instead of using a fixed mouse movement. The sensor itself is interfaced using the SPI protocol (see the sensor’s datasheet – ADNS 2610 Optical Mouse Sensor). Source: steffenschuette

This project is a full color LED-controller that can be configured via a USB connection. The color of the connected LEDs (common anode only) depends on the selected operating mode:Slow color change (ca. 40 minutes),Fast color change (ca. 2 minutes),Temperature base color (temperature range adjustable),Constant color 1,Constant color 2.Constant color 3 and Constant color 4. [...]

USB – RS232 converter, uses only Tx and Rx lines, with selectable 2400, 9600, or 38400bps. PCB projected to fit in old mobilephone cable, most of parts is surface-mounted. Source: diy.elektroda.eu Download Project: Converter USB – RS232

This device is fully functional sound card for PC. The main advantage of using PCM2704 against PCM2702 is much easier construction. The circuit can be powered directly from USB port. Source: diy4fun

This is a simple project, but one I hope you will find useful. Recent upgrades of 2 of my PC’s with bang-up-to-date motherboards, have demonstrated a need for USB ‘A’ socket headers, either to fit on a standard PC Component plate, or a spare blanking panel on the front of the PC. I’ve tried sourcing [...]