Search found 429 matches

by Magneto
Thu Apr 22, 2010 10:49 pm
Forum: Electronics & Electrical Engineering
Topic: Simple SD Audio Player with an 8-pin IC
Replies: 20
Views: 36172

Re: Simple SD Audio Player with an 8-pin IC

Dear Friend , If you are a beginner , it is always better to use PIC micro controllers from Microchip. Because now they are highly available in Sri Lanka and other thing is they are very cheap. I found a 16F877A micro controller at a electronic shop ( KVG Electronics) in Rathmalana for the price of ...
by Magneto
Thu Apr 22, 2010 5:21 pm
Forum: Microcontrollers
Topic: Musical DoorBell with PIC16F84A
Replies: 38
Views: 36560

Re: Musical DoorBell with PIC16F84A

Dear Friend , It is very good , that you have published an article , while you also learning and get some hints from robot.lk. So in this way , you can share your knowledge with lots of friends like you , who is willing to learn micro controllers and other electronic stuff. One day you can happy , t...
by Magneto
Thu Apr 22, 2010 5:12 pm
Forum: Electronics & Electrical Engineering
Topic: Simple SD Audio Player with an 8-pin IC
Replies: 20
Views: 36172

Re: Simple SD Audio Player with an 8-pin IC

Dear Friend , I am not sure whether I have done some mistake. up to my knowledge , you can not find any AVR microcontrollers from sri lanka market. But you can order them from Farnel ( Colombo -02 ) . I think most cheapest method to buy those is from ebay. But I am not sure this microcontroller is a...
by Magneto
Wed Apr 21, 2010 3:06 pm
Forum: Electronics & Electrical Engineering
Topic: Simple SD Audio Player with an 8-pin IC
Replies: 20
Views: 36172

Re: Simple SD Audio Player with an 8-pin IC

Hi Friend , You can interface the USB , with this ic. But the processor also should have built in USB interface. The processor mention in this circuit has not contain such one. And also this chip is not available in Sri Lanka. So I suggest , first try to interface a SD card to the microcontroller , ...
by Magneto
Sun Apr 18, 2010 10:45 pm
Forum: Microcontrollers
Topic: what is the watchdog timer ...
Replies: 3
Views: 3719

Re: what is the watchdog timer ...

Some note to Neo's article

Watchdog timer is very useful in low power mode operations also. In lots of processors , watchdog timer is the
only timer , which is working in low power modes. So you can use the watchdog timer interrupt for wake the processor
from sleep mode.
by Magneto
Sun Apr 18, 2010 8:40 am
Forum: Microcontrollers
Topic: 16F84 Sample LED Circuit Diagram
Replies: 6
Views: 7842

Re: 16F84 Sample LED Circuit Diagram

Hi All , some notes on above circuit diagram (1) Here LED's have connected as current sink devices, That mean current flow into the micro controller. So remember when you give signals from micro controller , to light up each LED , make the output pin LOW. that mean when you want to ON the LED , make...
by Magneto
Thu Apr 15, 2010 3:31 pm
Forum: Energy
Topic: Want to select low cost generator for small wind turbine
Replies: 3
Views: 8753

Re: Want to select low cost generator for small wind turbine

Dear Friend, You can use a car alternator as a generator for small scale wind turbine. Recondition alternator can buy for the price of Rs. 1500 /= ( 15 USD ). You can go about 1:4 gear ratio with this. Normally alternator has designed for generating current in high RPM and for generating sufficient ...
by Magneto
Tue Apr 13, 2010 11:37 pm
Forum: ???????? ?????
Topic: PIC Problem???????? Help Me
Replies: 7
Views: 5630

Re: PIC Problem???????? Help Me

Dear Friend ,

You can do this by using a USB to serial Converter. It is working as a serial port.
by Magneto
Tue Apr 13, 2010 11:29 pm
Forum: General Discussions
Topic: international relationships..
Replies: 6
Views: 4693

Re: international relationships..

Dear Friend , I think you have asked some bit hard question for answer. If you search about "international relationships" in the Internet , you will find hundreds of articles. But for a outside person , it is very difficult to decide , whether the articles are match to your sister's course content. ...

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