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Recent content by aameer

  1. A

    Finding Difficulty in Selection LED MATRIX

    I am finding Difficulty in searching p3 single color in india... Except P10 all other type r available in full color...will u plz help me.
  2. A

    Finding Difficulty in Selection LED MATRIX

    Does p3 come in single color like red or white I need 1ftx 2ft ..sorry wrong info before
  3. A

    Finding Difficulty in Selection LED MATRIX

    If i use p10 display it will be very large to display 100 characters or that much lines.. i need around 1ft x 2ft
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    Finding Difficulty in Selection LED MATRIX

    Hello Friends, I am working on a multiline indoor single color LED display board project. I am confused which type LED I HAVE TO PURCHASE..P6 OR P10 OR P4 OR any. Tye display size should b around 2 to 3 sq.mtr It should display static 100-150 words Please guide me Thanking you
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    C code for gsm interfacing with lpc2148

    first u study what to send and recieve from GSM module.Which GSM Module are you using?? PRODUCT NAME : GSM MODEM HARDWARE : SIM 300 MODULE COMMUNICATION : RS232 COMMANDS : AT INPUT VOLTAGE : 12VDC / 1AMP...
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    C code for gsm interfacing with lpc2148

    dear aman if you are beginner then you directly moving gsm is not good idea. do on serial communication and other things then you move on. Please try something and ask help. here everybody are there to guide you not to provide ready made stuff
  7. A

    [SOLVED] designing an alarm clock circuit

    tapu try the circuit i have worked with it.it works fine http://www.nskelectronics.com/automatic_college_bell.html
  8. A

    [SOLVED] designing an alarm clock circuit

    Try with this circuit hope u will solve your problem
  9. A

    how to connect buzzer and turn on LED in ARM nRF51822

    you can simple turn on and off buzzer with some delay. it will give pulses that result in tones
  10. A

    [51] PWM and RPM of DC fan

    for h bridge i need 2 inputs rite.how shall i connect
  11. A

    [51] PWM and RPM of DC fan

    can i use opto coupler ,SCR or h bridge for interfacing fan with micro controller for speed control #include<reg51.h> #define lcd_data_port P1 sbit PWMPIN = P2^4 ; sbit lcd_rs = P0^0; sbit lcd_en = P0^1; sbit quarter_key=P2^0;//switches sbit half=P2^1; sbit threefourth=P2^2; sbit...
  12. A

    [51] PWM and RPM of DC fan

    thanks ud. Can u tell me the hardware part. whether i have to use optocoupler or h bridge . Please provide me the circuit between micro controller pin and Dc fan.
  13. A

    [51] PWM and RPM of DC fan

    thanks milan. i can understand you but it is for academic project for my cousin.Their lecturers want them to do in 8051 as they have in academic subject. In PIC there well be inbuilt PWM. i also told him but he is not willing.
  14. A

    [51] PWM and RPM of DC fan

    thanks for the response. i am interfacing 12v dc fan
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    [51] PWM and RPM of DC fan

    i want to interface dc 12v dc fan to micro controller and with 2 switches i want to increase or decrease the speed of the fan ,simultaneously i want to measure the rpm of that fan and display on LCD. i just now started to interface LCD and switches. how to proceed please guide me. i am using...
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