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Recent content by ammarabbasi

  1. ammarabbasi

    Interfacing PC Monitor LCD with a Small color LCD which is normally used with Devices

    Hi there I have a device with color LCD with it , it displays GUI running on Microsoft CE 5.0 . I want to some way attach a PC monitor LCD with it so that , the monitor Displays the same gui as the device LCD. How can i do this. I thought to split lcd data cable and convert it to VGA . is it...
  2. ammarabbasi

    [SOLVED] calculatoruse8051pleasehelpme

    We are offcourse not doing it for you as this is your assignment . Please get this book with almost every topic expressed with elaborated examples . this book is very easy to follow. this book is taught almost in every institution as a course text of " embeded systems with 8051 ". "8051...
  3. ammarabbasi

    Microcontrollers reset when switching Contactor

    Isolate Power supplies Battery 1 Analogue V Analogue Gnd Battery 2 Digital V Digital Gnd
  4. ammarabbasi

    5 distinctions between CT and DT dignal

    Analogue Signals : A signal whose Amplitude can take any value in a continuous range , e.g 0,0.5,1,2,2.5 etc. Digital Signals : A signal whose Amplitude can take only finite number of values , e.g 0,1,2,3,5,6, etc. not decimal values Continuous Time : Values in time domain also...
  5. ammarabbasi

    can anyone relate PWM to degree's rotation of a servo motor ? mathematically plz.

    Dear Fellows , I want to rotate a servo to the accuracy of 1 degree . can you plz express the relationship mathematically Rotation as a function of Pulse width. Rotation in degree's (PWM) = ? or how much pulse (in frequence or time) is required to rotate a servo shaft to 1 degree. are...
  6. ammarabbasi

    HOW MUCH LASER POWER FOR,CUTTING,ETCHING,DRILLING,of a PCB

    i am confused with laser powers , i want to make a cnc pcb machine as a final project . any body having a work experience on LASER's ? what power is enough (no more no less) which can etch , drill , and cut a (copper clad) pcb board . i just want to use a single laser module . would i...
  7. ammarabbasi

    LDR pulldown resistor value ? For line tracking Robot !!

    I am going to build a line tracking robot , tracking a 1" white line on a Blue arena . and potting 3 pingpong balls (preloaded) in each of already placed 3 baskets at 3 different positions , when it finds them . i have got LDR to track line . I have LDR whose values of resistances for dark and...
  8. ammarabbasi

    UART communication program request between 89c5 and PC

    microcontroller coding as Hameeds said "search for mazidis book" "8051 microcontrollers and embeded systems with assembly and C" by M.Ali.Mazidi
  9. ammarabbasi

    problem using ADC as an interrupt for 8051

    8051 Interrupts which ADC you have used ? I cant understand "C" ! RD means "output enable " some times written as "OE" To get data from ADC to you have to set RD to 1 that is RD = 1 and then to clear it so that ADC could start coverting next analogue signal change , After the signal is...
  10. ammarabbasi

    Millivolt measurement with ADC

    Re: adc millivolt step size = Vref / 256* * (256 is in case of 8 bit adc = 2^8=256) { 2^number of bits = resolution} step size = minimum change you can measure for example , 0.01V is required 0.01 V = Vref / 256 Vref = 0.01 x256 Vref = 2.56 V
  11. ammarabbasi

    Can any one write codes for me?

    WHAT IS THE LEVEL OF DESIGNS ?
  12. ammarabbasi

    How to access individual BITS

    i am using keil for c in 8052. in this masking is used or keyword like sbit in manner as follows sbit variable_name = pin # ; this is to read form pins. to read , firs declare all pins as e.g define num P0 ; num = 0xFF; for masking : for example i want to reach bit 3 of port 1 then ...

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