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Recent content by leilarazavi2000

  1. L

    How to supply power to SIM300 without using battery?

    sim300 + power supply use LM338 . adjustable and 5A .
  2. L

    Is there a USB to LPT converter?

    lpt converter ft245 parallel to usb
  3. L

    Can I use JTAG ICE INSTEAD OF programmer?

    jtagice isp mode but jtag connector is different to ISP connector !
  4. L

    Can I use JTAG ICE INSTEAD OF programmer?

    how can i use jtagice isp HI I want to build JTAG ICE in system debuger I read that jtag ice can reprogram flash ( write BREAK ins. to avr for stop avr at break point ) Can I use JTAG ICE INSTEAD OF STK200 programmer to full programing avr ?
  5. L

    Need compression method on MCU

    I want to record sound on mmc ram , but I want to compress it to smaller size then write it to mmc . Yes , I want to be able to compress & decompress the data in the microcontroller thank you
  6. L

    Need compression method on MCU

    any link or help please ?
  7. L

    Need compression method on MCU

    Hi all I need simple code or algorithm to compression method on MCU Guess we have 20 KB data on ram . and I want to compress it to smaller size of data . ( like zip) How can I do? I need fastest method ( please !)
  8. L

    I want Low pass filter to kill UHF (<300MHz) pleeeese

    low pass filter uhf You need a simple low pass filter with one or two varactor diode. When varactor capacitance is high, the filter will kill the UHF and the poor customers will not be able to see the p*orn movies... Yes ...you right ,but this is not for p*orn movies. I need low pass filter...
  9. L

    I want Low pass filter to kill UHF (<300MHz) pleeeese

    filter uhf tv design lc there are a hotel and they want to control the content of channel . there are 2 group of rooms , some rooms are allowed to watch VHF and some rooms allowed to watch VHF and UHF. the allowed room may be changed, one day may be 40% of rooms allowed and one day may be...
  10. L

    I want Low pass filter to kill UHF (<300MHz) pleeeese

    300 mhz bandpass filter circuit Hi all sorry about my bad english I want a circuit for no-pass UHF filter. for RF antenna T.V It must allow to pass VHF-L and VHF-H with high quality and not allow to pass UHF thank you for answer
  11. L

    How can I connect a MCU to standard external modem ?

    Hi all I want to connect a MCU to standard external pc modem. 1-Is there any topic or link or similar project? 2- I think an external modem can detect busy line..... no answer ....... dialtone....and it can report it by rs232 com port to MCU. is it true?
  12. L

    How can I detect busy Line Phone with MCU ?

    Can you help me to design this circuit ? Very Thanks
  13. L

    How can I detect busy Line Phone with MCU ?

    Hi all How can I detect busy Line Phone with MCU ? thanks
  14. L

    I want anti phase reduce noise

    Hi all sorry about my bad english I want a circuit for anti phase reduce noise I work in noisy room and I want to reduce the sound. tnx
  15. L

    How to make bomb detectors?

    bomb detectors you must build a C4 finder !!!

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