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Recent content by hamidrezamaddah

  1. hamidrezamaddah

    Keil code generated by Proteus vs STM32cube

    Hi There are 2 library for STM32 microcontrollers. The HAL Library and The Standard Library. The stm32cube use HAL Library. May be proteus is using the standard library Proteus generated minimum code needed to work. but stmCube inserted the full library.
  2. hamidrezamaddah

    can i use the atmega8 without an external clock?

    Hi If your Board is working with external crystal, but does not work with RC oscillator, check the: 1- The RC oscillator 2- Fuse bits
  3. hamidrezamaddah

    Altium 18 DRC unrouted net BUG!

    There where Actually missing connections. for example: polygon of top and bottom in an area, was not connected. Does unrouted net DRC has any parameter? thanks
  4. hamidrezamaddah

    Altium 18 DRC unrouted net BUG!

    Hi I designed a PCB with Altium 18.0.9 and I checked it with design rule check. It has reported no error for un-routed net. After I got the board and montage the component I fined some problems that their reasons were some un-routed! I checked with DRC again and no error again. I checked it in...
  5. hamidrezamaddah

    [SOLVED] multi sim card connection and firmware implementation

    there are some chips for simcard multi plexing
  6. hamidrezamaddah

    ESP8266 Client and Server socket

    Dear, Can I create 2 socket, one of them as Client and another one as Server simultaneous? Best Regards.
  7. hamidrezamaddah

    Issue in sim808 of power down mode

    if you dont want to connect battery, you should connect the +4.1Vdc to VBAT pin
  8. hamidrezamaddah

    SIM808 firmware upgrade

    Dear I made my SIM808 Evaluation board and i want to upgrade the module firm ware from UART. In "SIM808_EVB KIT_User Guide_V1.00" , in part "Upgrade module’s firmware through UART port" , it is wrote : "Switch S105 and S102 to ‘On’ state". S105 is Power Switch. But i don't know S102(Download...
  9. hamidrezamaddah

    Is there any command to force GSM module to Search Network

    Dear, My device is work correctly. Because my application has mobility, and in some locations there is no network coverage the response will be "AT+CREG: 0,0" . after movement and entering in a network coverage area, the module don't search network , and won't register for many minutes. i want...
  10. hamidrezamaddah

    Is there any command to force GSM module to Search Network

    AT+COPS need time about 30 sec for response regards
  11. hamidrezamaddah

    Is there any command to force GSM module to Search Network

    Dear One of possible response to AT+CREG? is +CREG0,0 mean : Not registered, MT is not currently searching a new How can force the module to searching the network? Is there any command? Regards hamidreza
  12. hamidrezamaddah

    SIM900 Customer Flash Loader

    the software on the module's prossesor
  13. hamidrezamaddah

    ATMEGA128 can't read GPS Holux GR-87

    make sure that the holux module works right.
  14. hamidrezamaddah

    codevision or AVR studio or IAR

    Eclipse + WINAVR
  15. hamidrezamaddah

    SIM900 Customer Flash Loader

    flash loader is a tool, for changing the simcom modules firmware

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