USB | Electronic Project Circuits

Posts Tagged ‘USB’

Laughing Faces USB 2.0 4-Port Ultra Mini Hub

There are a lot of USB 2.0 hubs out there, but none of them are as cute as this one. It is not only a hub, but also a perfect ornament for your room.
* Offers lightweight, compact design-perfect for travel
* Installs with Plug-and-Play ease-requires no software
* Fully compliant with USB 2.0 specifications
* Novelty, Unique stuff
* The memory cards in the pictures are NOT included.

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Be the first to comment - What do you think? Posted by admin - February 23, 2011 at 5:47 pm

Categories: Electronic products Tags: USB

LCD 2 USB by Atmel AVR Mega8 CPU

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.

LCD2USB is currently supported by lcd4linux (LCD2USB support is built-in), LCD Smartie (requires a seperate driver), and LCDProc (LCD2USB support is built-in). The hardware of the LCD2USB interface consists of the Atmel AVR Mega8 CPU, a cheap and easy to obtain microcontroller with 8 KBytes flash (of which ~3k are used in this application) and 2 KBytes RAM. The processor is surrounded by few parts, mainly connectors to interface to the PC and the LCD. A power LED (LED1) indicates that the system is powered via USB. The system clock is derived from a 12Mhz crystal….

Source: http://www.harbaum.org/till/lcd2usb/index.shtml

Be the first to comment - What do you think? Posted by admin - May 15, 2008 at 2:22 pm

Categories: Circuit com, Microcontroller Tags: AVR Microcontroller, Circuit com, USB

USB Powered AA NiMH – NiCd Battery Charger by LM393

The charger in this project is designed to charge two AA NiMH or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge 700mAh NiCds in about 1.5 hours, 1500mAh NiMHs in about 3.5 hours, and 2500mAh NiMHs in about 5.5 hours. The charger incorporates an automatic charge cut-off circuit based on cell temperature, and the cells can be left in the charger indefinitely after cut-off.

Source:http://www.stefanv.com/electronics/usb_charger.html

http://electronics-diy.com/

Thank you.