Train crossing Pamban Bridge, Rameshwaram

DIY : LED Panel [Rectangular/ Semi Circular] (Hack your old Emergency Light )

    Happen to create two new panels for lighting. All the Lights are connected parallel. The UNIT circuit is LED White(D) + Serial 450ohms Resistor(R) connected to a 6V 1Amp power source. 

HACK :     Ideal source is to look for Emergency Light. Hack it and you shall find a 6V 4.5Amp/Hours battery. Just solder this panel via switch to the battery. Don't disconnect the A/C Charging circuitry. Just turn off of the stock light on the emergency light. Instead use this panel to light your home. This Panel extends the battery support light to max of 90 minutes (@MAX recharge of BATTERY). You can extend this time even more by lighting less no of LEDs in the PANEL. 

FULL LED PANEL is sufficient to illuminate an entire HALL of dimension 20ft x 12ft. Sufficient for a TYPICAL Indian House.

Caution : Hack on Old Emergency Light involves working with A/C power.

BILL OF MATERIALS:      You Shall need a Plastic Switch BOX of dimension 6'' inches x 8'' inches (non-modular/Solid);120mm PVC pipe of length 10'' inches; Driller; LEDs White; LED Holder; 450 ohms resistor as same no of LEDs; Wire; Soldering Kit; Food Grade Aluminium Foil Paper(Used for reflection of light).

RECTANGULAR PANEL : Wall mounted. The light source is pointed in a straight line.

Drill on the Board.

Screw up the LED Holders in place

Reflective surface with the Paper

Circuitry. Remember each LED needs its own Resistor.

Final Product

In Action

SEMI-CIRCULAR PANEL : This Panel is useful if the Light source is fixed on the ceiling. The light is spread across the entire area of the room.

Aquarium 2013

     Had changed the aesthetics of the Aquarium. Got a new AIR PUMP- ASIAN STAR - 10W - 220V-50HZ  PUMP rate MAX - 800L/h; 40PPI sponge for filtration. An excellent pump; Pretty quite for its specifications. This new pump keeps the tank so clean and aerated. Special thanks to TANK CLEANER FISH, (Cat fish) who is the internal glass whipper.

New Setup

Cat Fish 

AIR PUMP

  

Clearing History for Adobe 10.X pdf reader in WINDOWS 7

Just copy paste the following in a text file and rename it with .reg extension. Run it on. Tested on Windows 7 .(32bit)

Windows Registry Editor Version 5.00
[-HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat\10.0\AVGeneral\cRecentFiles]
[-HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0\AVGeneral\cRecentFiles]
[+HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\comdlg32\PlacesBar]

LED Array V1.0

A typical White LED Array effective enough to illuminate a room.

In Action

Flashing LEDs

The driver circuit design @ http://www.electronics-tutorials.ws/waveforms/astable.html

LED Array design
RGRGRGRGRGRGRGRG (R-RED, G-GREEN)

The 2 parallel circuits connected in an interleaved pattern with LED array. Both the circuit are driven by the two o/p from Astable vibrator. The flashing interval can be altered by changing C and R values at the circuit.


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LEDs in Action

Home Made Fan 1.0

  
     Design of fan leaf is borrowed from http://tekzgeek.blogspot.com/2008/07/home-made-wind-power-generator.html

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