IDEAS

So what after buying R Pi , the much hyped little supercomputer. You bought it with a huge urge for learning phython and develop some cool devices. But then you realise to setup a programming environment u need a keyboard, a mouse, network, a pricey HDMI display. (I swear any RCA  TV or monitor is too low in quality for an programming geek.)        So now your little but brilliant mind start asking why can't i connect and work R pi to my PC/Laptop.   Who can help you... ?????      Praise linux ... thanks to SSH and X window system .... SSH is a protocol , remote login facility for any linux system from another network device. X window is the aplication which runs a GUI in any linux OS. eg:- it runs LXDE on pi and GNOME on Ubuntu . The best thing about X window is that it is forward-able through  SSH protocol... !!  So what is the setup ??? Ingrediants:   1. A linux/ Windows PC ; which is your ...

Hi all.. Shortly received my Raspberry pi... i took my byte... :) I don't have HDMI capable display or an RCA monitor when i received the device.. But the eagerness was so high to think about an RCA video to VGA conversion, since my PC monitor is VGA capable only and was immediately available with me. I have an Altera DE2-115 FPGA board with Cyclone IV FPGA. It is a future perfect development board with a bunch of multimedia capabilities and large I/O options (still lacking HDMI ).       It have a RCA Video In plug. It also have a VGA output connector. So i thought of connecting Rasp pi RCA output to the DE2-115 board. And VGA out of DE2-115 to my PC monitor. The starter CD with DE2-115 have a TV Box Demonstration program. Refer to the DE2-115 User manual  (page 55). Loaded the .mcs file of  TV Box  program to Cyclone FPGA. Connected and powered Raspberry Pi. Voila... The raspberry fruit logo and boot messages started scrolling up.. and finall...

Do u watch lot of movies on your PC, ever thought of having a remote control so that you can sit far and enjoy the movies... read further Lot of IR receiver devices are available online for purchase.. But what is you are not able to spend thousands for them.. Here a simple Do It Yourself IR receiver is explained.. BASIC NEEDS 1. Some soldering skills 2. Few electronic components 3. Backpanel RS232 serial port or internal serial header on motherboard. 4. WinLIRC freeware  ( http://winlirc.sourceforge.net/ ) Almost all motherboards have serial ports on backpanel or Serial header on motherboard. In domestic uses these ports are never used..  So we use this port for the communication part. Use can use any remote at your household (TV, DVD player, TV tuner remotes etc.) HARDWARE PART 1. CIRCUIT DIAGRAM 2. EXPLANATION   Sensor SM0038 is a common purpose IR signal detector centered at std 38khz range. We provide a stable 5v supply to it using LM7805 ...

As you all can find immense resource about HAM Radio and its related hobbies in internet, i am hereby trying to give some help to get such license in India. So this post is for someone who is planning to write the licensing exam (Amateur Station Operator's Certificate or ASOC). No HAM technical are described here... for that u should dig somewhere else.. So lot of changes have occurred in licensing like the Grades of Licence, Maximum power allowed in each grade, the exam pattern, frequency, guidelines etc... Revised amendments from government will update these aspects... According to current regulations two grades are available. (Old times it was total 5 grades)  1.Restricted (no Morse code test  and lesser transmission power)  2. General  (Morse code test  and higher transmission power ) A candidate can mention his desired Grade in application form for exam. Always the best method is to find a Ham club in your town and register with them for e...

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....

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...

Some new networks allow to retrieve the mobile number (MSISDN) from the network. You can use this facility to know the mobile number of ur unknown SIM card(if u have lot of SIMs)that u had forgotten for long time and now just found it in your old purse. These codes worked for me. *1# *7# I have tried almost all networks of which airtel and idea didnt reponded. Add if any similar code worked for u... An update : *789# for idea