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Recent content by sabeti_1990

  1. S

    SIM900 GPRS Connection doubts

    i think u must use at+cip strat in the bigening
  2. S

    o2a2 oxygen sensor with avr

    i know that it's a current sensor but I have problem to reading current sensor do u have any solution to change it to out voltage (like 0 to 5 volt etc) tanx
  3. S

    o2a2 oxygen sensor with avr

    hi every one i have problem with o2a2 oxygen sensor does anybody have a solution for reading this sensor i want to convert it to avr micro controller :oops:
  4. S

    USART sim900 and Atmega32

    hi for connect to PC rx & tx & gnd is enough u should only use a level converter like max232 but for tern on module automatically u only can use a program in your mega32 to read work state of sim900 - - - Updated - - - hi for connect to PC rx & tx & gnd is enough u should only use a...
  5. S

    PID Based Solar Tracker

    hi if u want do it in PID base it's better U save the curve of each sensor in day light & then do it on sum of these curves but u can give help via a RTC clock to real set the sun rise time in each day in year or U can use solar panel as a solar tracker by measuring the voltage & power of...
  6. S

    How to Calibrate LC meter

    hi I think U have to calibrate with a low error L & c like 100uH & 100mH for L did your project only on simulation ?
  7. S

    Sim 900 AT+CREG freeze

    actually it's because of power your power can not support module in power up & registering in network & it's down check voltage in start up in module
  8. S

    rtl8019+avr + remote software

    hi did any body see the remote sample software for reading rtl8019 that work with in an avr chip via network in fact i want to trans & recive data via uart in avr & virtual com port in a pc (or any system that have OS) thanx:!:
  9. S

    design to control a dc fan speed using 74hc 4046 and infrared

    hi it's not problem in pll u can use vco mode on it , but what do u mean in infrared what do u want from it
  10. S

    FM modulator/demodulator with 4046

    hi u can use ne 565 or xr 2211 for usuall demodulator & use cxa1691 or mc3361
  11. S

    RS232 line driver wthout charge pumps?

    hi can U use rs485 instate of 232 it's look like better in noise
  12. S

    Power Line Carrier Communication

    hi u can use xr2206 for decode & encode fsk & couple signsl via a chock & cap filter to power line
  13. S

    project on multimedia

    what kind of multimedia project do u mean ?
  14. S

    XR2206 for FSK modulation

    hi i can't see the pic can u share it again tanx
  15. S

    sim900 transparent mode and cts signal

    yes it is it may because of bad firmware code on module did U try sim300 it seem so better

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