Recent content by upneet

  1. upneet

    Radio Frequency Communication (RF)

    Hi. Again the project has changed but now i am going to post lots and lots of details because my project demo date is nearing and i need lots and lots of help ;) now wer r using four sensors one pH sensor from sensorex, one local humidity sensor and two temperature sensors pt100 and lm35 we are...
  2. upneet

    Radio Frequency Communication (RF)

    I am getting 4800bps data from my RF ic. Now i want to connect this to my computer I know i will have to use some ic like max 235 or something then i would like to use com port and some vb programming to get a good user interface which will show all the details about the sensed values with bit...
  3. upneet

    Radio Frequency Communication (RF)

    No i was not hibernating these days! my project plans have changed drastically NOw i have to interface four sensors ph, temp ( lm35), light sensor ( from optical mouse or something) and humidity sensor if possible to a pic ( mostly pic 16f877) or similiar then i have to display this on led or...
  4. upneet

    Radio Frequency Communication (RF)

    hi i saw that site it was helpfull downloaded few stuff which i will study. But the problem with foreign site is that its costly and payment is tough. So here is an indian site www.mdclrf.com its cheap and good and i am planning to use the following ics MDT 4 - 433.42 Mhz High power...
  5. upneet

    Radio Frequency Communication (RF)

    hey guys/gals i have started working on rf part i was india centric help. I would like to know which frequency will be most suitable for my application.i want to transmit the signal from temp/ph sensor the range is less then 100 meters i wont it as simple and cheap as possible. I dont wont to go...
  6. upneet

    Radio Frequency Communication (RF)

    thank u kevin and MP for ur support. I was working on both wireless n RS 232 and RS 422 methods the problem with RS 232 is its noise immunity and it cant be used above 50feet and the problem with RS 422 is its cost. The problem with wireless is licencing because the police wireless operates and...
  7. upneet

    parts for precision farming

    hi friends I have my major project this time. We have to make project on farming ( electronics in farming!!) I had built an online pH meter last year. Now i m interested in making a unit which measres pH, conductivity and temperature and transmits it to a computer using either wireless technique...
  8. upneet

    Radio Frequency Communication (RF)

    thanks dude i think ur idea is great will let u know if i need any further help :)
  9. upneet

    Radio Frequency Communication (RF)

    if i wanted to use RF there was lots of problem with respect to licencing. then I had to use 900MHz one used in cordless phone but to finish everythiiing in three months is very complex now i plan to use RS 232 hope it works
  10. upneet

    Radio Frequency Communication (RF)

    hi friends, I searched for some IC's provided by analog device. Some IC's for modulation/demodulation, receiver, transmitter, transreceiver were real good. I think i will be tring for 900MHz. I live in India. Do u think i will have to get licence and all that stuff?
  11. upneet

    Radio Frequency Communication (RF)

    i have completed the pH part the sensors output is in mV range thus i amplified it using op-amp circuit and then displayed it using IC 7107 the o/p of temp sensor is also in vtg now i want to tranmsit this so that the computer withint 100meters can receive this signal (wireless) i dont want to...
  12. upneet

    Radio Frequency Communication (RF)

    but the sensors will not be connected to computer they will be on the field then i need to transmit the data using rf to the computer which will demodulate and do the work my area of intereste is RF transmission
  13. upneet

    Radio Frequency Communication (RF)

    Hi I have to do a major project in three months. I have a idea as follows. we want to make a unit which measures pH, Conductivty and Temperature of soil then i want to transmit this data using RF to a computer is it possible? please help i plan to buy good sensors and then using RF i want to...
  14. upneet

    wireless RF USB mouse

    dude i am planning a similiar project its like we measure pH, conductivty and temp on farm using some readymade sensors and then i want to wirelessly transmit the data to a computer which is situated at a distance. I m interested in RF communication is it possible> if u can help then please...
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