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Recent content by buiducthang

  1. buiducthang

    gsm modem sim900 problem

    i have same problem. Plz help me.
  2. buiducthang

    Problem with AT24C512

    Hi all, Im working with AC24C512 using ATMEGA64. I have code work fine with ATMEGA32 but when i use that code for my ATMEGA64, it did not work. I dont know why. After that, when writing to EEPROM, i try to write 2 times and its OK. So what is my problem? Before, i worked with ATMEGA32 and i need...
  3. buiducthang

    MultiLayer PCB Designing Help!

    Thanks for replying. I refer in Altium Wiki and download some manuals. I also discovered Layer Stack Manager guide. But the information is not enough. I need some documentations with more details include: guidelines, tutorial guide,... Thanks and Regards,
  4. buiducthang

    GSM interfacing with ATmega16

    I think the best way to do for u is using AT command Reference. AT command is standard for communication with almost GSM Modem devices. You can reference "AT command Standard" in Google. Best and Regards,
  5. buiducthang

    MultiLayer PCB Designing Help!

    Im designing in Altium Designer enviroment. Now, i want to design an mulitilayer PCB. How can i start? Does anyone have manuals for designing multilayer PCB? Thanks and regards,
  6. buiducthang

    Help me with ENC28J60!!!

    Hi all. Im in designing with Ethernet project using ATMEGA64 and ENC28J60. However, im in trouble with the connection. In ENC28J60 datasheet, i see that it only support Ethernet (10Mbps), not Fast Ethernet (10/100Mbps). So, when i connect the board (ATMEGA64+ENC28J60) directly to My computer...
  7. buiducthang

    Help about loadcell in Belt Scale pleaase!!!

    Im going to design a belt weighing. i have to chose a type of Loadcell. Who can tell me which type of Loadcell is most suitable for Belt Weighing? Thanks a lot.
  8. buiducthang

    Belt weighing device help!!!

    Im going to work in project related to Belt Weighing. My work is researching and finding the scale device in the market. But, this is the first time i work about Belt Weighing. So, i dont know who is the most famous company in Belt Weighing field. I just only know a bit about cciscale company...
  9. buiducthang

    Updating only one sheet from Schematic to PCB In Altium

    Well. If u want to implement if from the schematic itself, it is impossible. I think Altium's function : import changes from... can satisfy your requirements. For example, we have 2 sheets: Sheet A & Sheet B in a project. We have a PCB is made from two sheets A&B. If by curtain reasons, u have...
  10. buiducthang

    help in Avr program!!

    It is wrong. Becuase in PonyProg, let u see the notice below: Check items means programmed (bit=0). So if u want the chip work with external crystal, u have to config with all CKSEL uncheck. By defautl, the chip work with 1MHz internal. Regards,
  11. buiducthang

    What is the best Antivirus software on the market?

    Re: Best Antivirus with me, it is Kaspersky Internet Security. Its light, effective and sensitive.
  12. buiducthang

    Updating only one sheet from Schematic to PCB In Altium

    Of course u can. U can import changes from one or more sections of Schematic providing that u creat a project correctly. When u change anything in your sheets, u need only choose Designe --> Import changes from *.project...All will be done!
  13. buiducthang

    SIM548 / SIM508 charging battery

    I think SIM548 have inside regulator. When we use 5V or 3.7V Battery, it convert into lower reference voltage (ie 3.3V). When have no 5V Power, it works with 3.7V Battery, when have 5V power, its charge for Battery and works with 5V Power.
  14. buiducthang

    RealTimeOS Requirement

    Thanks. But im using AVR. Who knows what is the most suitable kernel?

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