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Showing posts from September, 2012

Real Time Clock IP Core

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A completely synthesizeable IP core of a Real Time Clock (RTC) is presented here. Specifications 1. Alarm Set capability 2. AM/PM notification 3. Last Alarm time memory Info HDL used  : VHDL Tested on an Altera DE2 FPGA deveopment board.see the screenshots. Download link to source VHDL files http://www.mediafire.com/?ud1bt4zl05y5v6s Bugs are always tricky.. so download, try , and report back if any exists.. But i am sure u will love to explore the code because.. it will teach u abt reading hardware pins, using it in digital logic.. driving 'LED 7 segments' and interacting with the design using push buttons and slide switches etc....

Save a external USB port from Bluetooth Dongle..!!!!

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Hey.. guys... Let us see another idea.. Simply it is to make your Desktop Bluetooth enabled without using any rear/front USB ports but still by using a cheap USB Bluetooth dongle.. Even somebody got the idea.. i guess.. the smell of a hot soldering iron.. Let us start.. Basics  Use the extra available USB internal headers on a motherboard (refer mobo manuals). Nowdays all mobos have plenty of such headers.. but rarely used by any user.. So... Ingrediants needed. 1. A female USB port.. (screw some friend of yours having a Pentium 2 or 3  PC. ) 2. Wire harness of old PC speaker and front pannel connector (u r again lucky to have such a friend). 3. A small lined PCB. (Cut it around with just 4 lines at a length of 2 cm.. ) 4. The usuals.. obviously the Iron, solder paste, solder lead etc... Design Methodology Solder the 4 wire harness on the 4 lines of PCB. Understand the board connectors from the skteches. Also understand the four copper contact...