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  1. Replies
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    Re: 8-bit Bootloader from Microchip

    Thank you Richard.

    I'm going to have a look at the link you posted and try before asking more :wink:
  2. Replies
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    Bootloader basics.....

    Thanks Richard.

    I'm getting somehow out of the fog but I still need more info...

    2a.- is my program (not the bootloader) going to be in HEX format or does it have to be generated in some other...
  3. Replies
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    Bootloader basics.....

    I really need some basics on bootloaders because the more I read about this subject, the more I'm getting lost...

    Please correct me and I apologize for the the order of my questions - there is...
  4. Replies
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    8-bit Bootloader from Microchip

    Hi All,

    I've heard about bootloaders for the last 14 years but never tried myself because I didn't have really the need for it.

    Today, still the same, no real need...but I'm curious to now how...
  5. Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    ...and this the exact module I'm using.

    8893
  6. Re: Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    My module's firmware is Revision:1418B02SIM800L24
  7. Re: Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    I'll give it a try with PUTTY and HYPERTERMINAL although I don't know how to send control characters with those programs too :(

    But why would it be the problem of my serial program since I need to...
  8. Re: Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    Sure is sure so I just checked again.

    See whats happens with CR instead of LF:

    8892
  9. Re: Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    Ioannis,

    This is really strange, yes. It took me hours to find out that there was something strange.

    But actually, to make it work, I use:

    working with PIC: SEROUT...
  10. Testing a SIM800L GSM module via Mecanique's Serial Communicator

    Actually, the working syntax in the Serial Communicator is: AT+CMGS="+4179xxxxxxx"#10"Hello Roger"#26

    Thanks Richard for your help :wink:

    BTW, one of the AT commands manual I could find in the...
  11. Re: Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    Thanks Ioannis for this good lesson. I effectively didn't realize that I was sending those "four individual" characters one-by-one.

    Have a nice day :)
  12. Re: Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    Thanks guys,

    I knew it, I knew it!!! :D

    I should have read the communicator's help again - did it a few years ago but forgot the "hash" story... my bad :-\

    Thanks again...
  13. Testing a GSM module via Mecanique's Serial Communicator - "terminator" issue?

    Hi All,

    I'm currently testing a SIM800L GSM module and have no probelm at all to make it work via my 18f2431 PIC.

    So, what's the problem?

    In fact, I want to make this module work also via...
  14. Replies
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    Battery power back-uped circuit

    Hi Alain,

    I thought these BMS circuits were already interated in the batteries?

    When I look to one of my LiPo battery, I can see some kind of a circuit at the top of it.

    I might be wrong,...
  15. Comparator not tripping above 0.6V (Vref) on PIC 16F690

    Thanks Richards,

    Sorry, maybe the word "trip" is not adequate (I'm speaking french) :o

    BTW, what would be the correct word: "latching"?

    I found this interresting video which made me start to...
  16. Comparator not tripping above 0.6V (Vref) on PIC 16F690

    Hi All,

    I'm struggeling to get my 16F690's comparator 2 output to trip when the measured voltage gets above 0.6V (for battery level monitoring).


    ' ====== FUSES...
  17. Replies
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    Re: Battery power back-uped circuit

    Thanks Ioannis.

    I'll give it a try with a few different MOSFETs and see what happens.

    For any reason, until I haven't tested it with my "hands" (and the voltmeter :biggrin:), it doesn't get...
  18. Replies
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    1,428

    Re: Battery power back-uped circuit

    If I may ask further,

    The "most important" value to take care off is the "Gate Threshold Voltage"; right?

    It has to be as low as possible...but how low and why?

    8859

    I thought RDSon value...
  19. Replies
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    Re: Battery power back-uped circuit

    Thanks Sayser,

    Unfortunately, 3.2V will be too low - anyway, thanks for the Li-FePo4 advice ;)

    8857
    BTW, going back to AN1149 and the choice of the P-Channel MOSFET, as I don't know if a...
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    Re: Battery power back-uped circuit

    Thanks Richard,

    That was really quick!!! ;)

    Yup, I think this is exactly what I'm looking for.

    I should have thought about these chips since I sometimes use MCP73831 ones.

    Thanks a lot...
  21. Replies
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    1,428

    Battery power back-uped circuit

    Hello All,

    I'm making GSM alarm controller using a SIM800L GSM chip from SIMCOM.

    Since the project is about "monitoring" and "alarming", it is important ton ensure a redundant power feeding (=...
  22. DHT11 Humidity & temperature sensor with SLEEP for 16F690

    Hello,

    Here is my code to read temperature and humidity from a DHT11 sensor. It has also the SLEEP functionality.

    I tried to make it as simple and clear as possible :)


    ' ====== PIC 16F690...
  23. Replies
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    MPU-6050 - gyroscope/accelerometer

    Hi all,

    I've got some GY-521 gyroscope/accelerometer modules in my drawer and curious if I can make them work.
    8749
    Googeling around for some hours, I couldn't find any piece of code yet.

    Is...
  24. Re: Indexing WORD variables goes wrong after index(0) - 18F1330

    Thank you Dave.

    This is indeed very interesting and helpful (at least in my case) :)
  25. Re: Indexing WORD variables goes wrong after index(0) - 18F1330

    Thanks a lot Dave.

    I'll have to dig in this "EXT" to see exactly what this does, but it (sorry: "you") actually solved my problem.

    Thank you very much again :)
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