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Recent content by smahdy

  1. S

    Problem with SIM900 in multi connection mode

    Hi I want to set Local Port for my sim900 module in multi connection mode(i define 3 server for GPRS connection). but i have problem!! after 2 days continuously work in see ERROR in AT+CIFSR command! in my simcard APN(Access point network) is active. any ane can help me to solve this problem...
  2. S

    make negative voltage with DAC lpc1768

    hi my friend i test your circuit and its very nice thank u
  3. S

    make negative voltage with DAC lpc1768

    thank you my friend but i need to make a accurate signal .but i think this schematic is not ok so do you have any other solution?
  4. S

    make negative voltage with DAC lpc1768

    hi i want to make negative voltage with DAC in lpc1768. any one can help me ? thank you
  5. S

    Problem with cy7c68013a board

    Hi thank bigDog for your answer and sorry because of delay my reply this is my schematic .please look at and tell me your suggestion i change res & cap for reset pin but not any thing happen so i look at "The Uncomplicated Universal Usb board " as soon as possible smahdy
  6. S

    Problem with cy7c68013a board

    any body can help me please
  7. S

    Problem with cy7c68013a board

    Hi I am using cypress cy7c68013a-100a and driver cyusb.sys in "Cypress Suite USB 3.4.6" for win 7 in wlh folder. and change .inf file (my .inf is attached) and build a board according AN15456 in this address **broken link removed** When I connect on some PC's running Windows 7, i...
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