How to Stream your desktop video to Facebook Live

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Setup open broadcaster studio to get your desktop video on FB live,

facebook added live streams to FB pages. so if you are the page admin, you also can start streaming on FB and this is not only your web cam. lets see how to share your screen..
First you have to download the open broadcaster from bellow link.

https://obsproject.com/download 

install the software then open it.




 

D1710 blast by overloaded mains..

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Who can do this ..

The Oldest Calculator i repaired

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its called 'Canon Palmtronic 8M'  

Create your 400w stereo amplifier today

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This is another great power amplifier witch designed by using 2SC5200 and 2SA1943. You can get super heavy quality  power in this power amplifier and it delivers 200W Rms through a 4Ω speaker by one channel.

In this amplifier i have used 36V 8A transformer for the Power supply along with 10000MF 63V smoothing

power saving led bulbs for your home

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Everyone talking about power saving right now and you also can do that with this.first you have to bye this light fittings. various type available in the market. in here i have take one of them for show you.   

• the super bright 1W SMD type LED

Decorated Headlight for Your Motorbike

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as you all know there is too many lights in the market for decorate your bike. but today i will tell you how to create very smart and low cost light for your bike believe me its awesome.

for this i have used 12 flash light LED and plastic plate for fix that LED.

The best Universal TV Remote i ever get

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Every day i receive too much complain about remote's because all people have there TV with not working remote controller. its not easy to find the correct model in the market so every one wast money for perching new remote. but now i got the answer this one is working with most of TV model in Sri Lanka with any brands...

you also can try, here is the model and specification ......

LED Flare with PIC16F628A Microcontroller

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PIC16F628A is 18-pin Flash-Based, 8-Bit CMOS Microcontroller with nanoWatt Technology.this is my first pic project. here is the pin connection for pic16f628a.

schematic for LED Flare,

LED banner technology

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hi everyone,

today i'm going to tell you  about LED banner. its very popular now in here in sri lanka. its not difficult to create. in this banner i used two LED panel and S1 control circuit.and also 5V SMPS power supply unit.this S1 unit, it can connect to computer through serial port. and the software which i used here called 'powerled' it totally free of charge and u can get it with the S1 unit.

My new creative m4500

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I'd like big sound music entertainment. but in my home, noway. So i perches creative m4500

it's good solution for me.

STK4231 II 200W power amplifier with USB & FM

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This is another great power amplifier that designed by using STK4231 II. You can get superb audio quality and unmatched more power in this power amplifier and it delivers 200W Rms through a two 8Ω speaker.In here what i have don is i add USB mp3 player in this same amplifier.its working properly and my costumer also like this.

 here is some pic..

main power amp pcb

ADDZEST car stereo with USB

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Pioneer KEH-P2035 with USB mp3 player circuit

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hey this is really not new idea but hope it will help some one.

MOSFET 45Wx4 Multi-CD control Cassette/Receiver with Bass/Treble Booster

Features

• BTB (Bass/Treble Booster)
• 2-mode selectable loudness
• RCA preout: rear
• Radio intercept

as we know Pioneer KEH-P2035 car set is very popular car audio system. it has very good sound out and its four way. but now time has changed. most people they don't want to listen  audio tape coz they have USB pen reader and they got hundreds of mp3's to listen.

what about our Pioneer KEH-P2035 owner's, do they want to throw there set and install a new USB mp3 player. oh its expensive as well so i will give one idea.

look at this.  

TLC 272 PREAMPLIFIER

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here is the one good circuit what i found with sharp tone controller.for best performance use very smooth power supply for this circuit. the circuit shown here must duplicated to obtain a stereo preamplifier.

UP/DOWN FADING LED CIRCUITS

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These two circuits make a LED fade on and off. The first circuit charges a 100u and the transistor amplifies the current entering the 100u and delivers 100 times this value to the LED via the collector-emitter pins. The circuit needs 9v for operation since pin 2 of the 555 detects 2/3Vcc before changing the state of the output so we only have a maximum of 5.5v via a 220R resistor to illuminate the LED. The second circuit requires a very high value electrolytic to produce the same effect.

LM3909 LED flasher

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The LM3909 is an integrated circuit (IC) which will flash a light-emitting diode (LED). Using only two extra components and a battery, the circuit is cheap and has a very low current drain from a 1.5 V cell. The circuit can be used as a novelty flasher, an indicator for a dummy alarm bell box, or it could be attached to a torch so that it could be found easily in the dark!

TDA 2822 headphone amplifier

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Microphone Amplifier Module

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This circuit based on a very simple single transistor amplifier which can use with any power amplifier. very low noise, 45dB stage gain. Input impedance: 2700 Ohm.


Parts:-

R1______________1M2  1/4W Resistor
R2______________5K6  1/4W Resistor
R3______________1K   1/4W Resistor
C1,C3___________4µ7   63V Electrolytic Capacitors
C2____________100µF   25V Electrolytic Capacitor
Q1____________BC550C  45V 100mA Low noise High gain NPN

ELECTRONIC PUSH BUTTON SWITCH

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When the circuit power is turned on, C1 capacitor charges via the two 470k resistors. When the switch is pressed, the voltage on C1 is passed to directly Q3 to turn it on. This turns on Q1 and the voltage developed across R7 will keep Q1 transistor turned on when the button is released. Q2 is also turned on during this time and it

How to make a simple L.E.D cube

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LED cube is very famous because of its beauty. Here is the circuit diagram for very simple LED cube. In this circuit we used 27 white LEDs. The 4020 IC is a Simple 14 stage binary counter and we have used here 9 outputs. Each output drives 3 white LEDs in series and we have omitted a dropper resistor as the chip can