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Recent content by ljmnunes

  1. L

    Thank you / New look and feel OF EDA board

    Congratulation! The new look is very nice! There are new facilities in the board? Im going to check it. Thank you for the good job. []s
  2. L

    RS232 - RS 485 converter

    sn75176 application note rs 485 Sorry... I know that I'm too late to post a reply, but I'm upload the schamatic in a pdf format. May be it is helpfull... []s
  3. L

    file of the schematic (Orcad) for the rabbit board needed

    Hi, Dspnut. I can't post our PCB file because ythe PCB is made for us by another company, so I haven't its file. We make only the schematics. But what is your problem? If you describe it, may be I can help... []s ljmnunes
  4. L

    file of the schematic (Orcad) for the rabbit board needed

    If you need help, let me know. I made some boards for Rabbit. :)
  5. L

    implementing a microcontrller network using RS485

    Hi! You can use the S.N.A.P protocol. It is good. Check it in h##p://www.hth.com/plm-24/ good loock!
  6. L

    PIC with Dram for storing analog data - any experiences?

    Hi! I found the attached file in the net but I'm not sure were... I hope it will usefull :D ljmnunes
  7. L

    how to do an home-made negative photoplot of PCB

    Negative Photoplot Hi Folks! Can someone explain me how to do an home-made negative photoplot of PCB with P - C @ D 2**2? :( I can make positive photoplot without problems. I used a HP laser printer with a transparent sheet and it works fine for positive. For negative I've tried many...
  8. L

    Heatsink for a non critical application control 2600W AC

    Hi! I need to design a heatsink for a non critical application. I will control 2600W AC with four thyristor. I learn about it in the past but it was a loooong time and I need to remember the rules / formulas. Can someone give me the correct way to goal? Thanks
  9. L

    Universal infrared remote control receiver with 89c2051

    rc5 remote encoder code for 89c2051 in c Take a look there: http://www.hifi-remote.com/infrared/index.shtml May be it can be usefull... :D
  10. L

    Borland C++ Builder and serial ports

    bcb com port There are some components to make your life easy. I use Comport from winsoft. It is very ease to use and cheap. http://www.winsoft.sk/comport.htm Another I haven't tested yet is the ComPort Library version 2.64 found at: **broken link removed** Here there are a tutorial...
  11. L

    Help me with a PIC project that would store commands send via COM2

    Hi, Ergen!!!!! Smile!!!! :D Give me your email by PM or ICQ. I finished a circuit for you, but I can't upload it... :(
  12. L

    Someone have the Ashrae Standard 135 (BacNet)?

    Hi, derlan. BacNet is a HVAC protocol. It is used to interchange data between Building Automation subsystems like Air conditioning systems. I'm looking for a long time. []s
  13. L

    Protect Pic Software and Max232 Combining

    program for max232 Hi! Yes, you can protect your program with a fuse. Again yes, you can change data in the PIC internal RAM or EPROM. Is the "ComPort" the winsoft component? If yes, congratulations! It is very easy to use. Forget the PIC 16F84. Use 16F628 instead, it is better than 16F84...
  14. L

    Someone have the Ashrae Standard 135 (BacNet)?

    BacNet Hi! Someone have the Ashrae Standard 135 (BacNet)? I need mainly the attachs J, K, and L. Thanks a lot!!
  15. L

    rs-485 info / tutorial / drivers needed

    hello, pharos. As tom324 said, RS485 is a hardware interface not a protocol. Some people call it "protocol RS485" but it is not right. There are a lot of protocol specification in the net. You can only choice that you need. Can I help you? I used Modbus protocol for years.
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