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  1. Re: with the pic16f628a off, a voltage on an1 comes out from main voltage pin, why?

    Why you don't connect A1 after switch?
  2. Replies
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    Re: Using Floating Point to integer subroutines

    I do not have DEV_FAM.inc file.
    I have:
    FP1832L.bas
    FP32.A18
    MATH18.INC
  3. Replies
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    3,419

    Re: Using Floating Point to integer subroutines

    I have FP library running on few 18F46K80 and 18F87j50.
  4. Re: AD8302 Phase and magnitude to complex impedance

    First, I now see that I have mistake in formula, all items with "i" should be on right. I used online calc to solve it. Looks like that I need to solve by hand...
    Answer to your question is yes, and...
  5. Re: AD8302 Phase and magnitude to complex impedance

    Written in form Zx=R-jX
    8927
  6. Re: AD8302 Phase and magnitude to complex impedance

    Step 6: Realize how stupid you are, and how some things are simple :)
    Math is actually fairly simple.
    M=Vf/Vr-magnitude signal from AD8302. p- Phase from AD8302, Z0-system impedance
    ...
  7. Re: AD8302 Phase and magnitude to complex impedance

    That is usually case. But I want it to be in real working condition(bolted to wall) or on other surface.
    So trimming isn't problem.
    Step 1: Make longer antenna,
    Step 2: Just go to antenna clip...
  8. Re: AD8302 Phase and magnitude to complex impedance

    I need to design custom shape of antenna. Antenna is in plastic box, partially potted, low height etc. In short antenna is in place where no antenna should be.
    I already used noise source+bridge+RTL...
  9. Re: AD8302 Phase and magnitude to complex impedance

    I want to create something like this:
    https://www.youtube.com/watch?v=Ct_Ka923ONM
    https://www.youtube.com/watch?v=rDHJPV6OysQ
    From last video I'm missing Im and denominator.
    Im/Denominator is...
  10. Re: AD8302 Phase and magnitude to complex impedance

    Pic and registers etc doesn't mater at all... I do not have problem with code, I have problem with math..
    Complex impedance is just way of representing magnitude and phase. It looks like Z=R+jX,...
  11. AD8302 Phase and magnitude to complex impedance

    Hi,
    I didn't know where to put topic, so if it is wrong place...

    I have project where I need to match 868MHz antenna to 50R. So I build sort of antenna analyzer.
    I used this bridge...
  12. Re: Low power accurate 6 month timer - suggestions?

    Thanks for info. I'm wondering how much devices will be recovered...
    Also please report your experience with microcrystal RTC. I have one dev board on shelf, but newer tried...
  13. Re: Low power accurate 6 month timer - suggestions?

    How you will get data from bottom of sea?
  14. Re: Low power accurate 6 month timer - suggestions?

    If you need low power, accurate, and small part I'll go with microcrystal RTC.
    3.2x1.5x0.8mm, 40 nA @ 3 V, 1 ppm @ 25C, Fout 32768...to...1Hz, alarm with int pin.
    Need more?
  15. Re: Getting data from user, how to store it properly? (kinda dialog interface)

    48 word array will hold 48 steps...
    Just create array for x,y,z,s...
    Eg

    X VAR WORD[48]
    Y VAR WORD[48]
    Z VAR WORD[48]
    S VAR WORD[48]

    FOR steps=0 to NoOfSteps
  16. Replies
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    Re: PIC to PIC (3 digit LED display)

    Also measure from GND to GND.
    Schematic would help a lot.
  17. Replies
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    Re: HTML and PIC communication

    Just to say again to be clear...
    From your modem you need to open this link
    https://pedja089.000webhostapp.com/index.php?x=8
    and put variables name and value after ?

    Unfortunately I can't log...
  18. Replies
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    1,905

    Re: HTML and PIC communication

    Just remember that I already have that script up and running.

    https://pedja089.000webhostapp.com/index.php?x=8

    https://pedja089.000webhostapp.com/1.txt
  19. Replies
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    1,905

    Re: HTML and PIC communication

    It contains PHP. It isn't pure HTML.
    So script need to be hosted on server.
    You can use free server for testing.
    eg: www.000webhost.com
    This isn't ad, just sharing one that worked for me.
    Try...
  20. Replies
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    1,905

    Re: HTML and PIC communication

    Here is script that I made for user on another forum

    <html>
    <body>
    <?php
    echo "POST Vars: <br/>";
    print_r ($_POST);
    echo "<br/>GET Vars: <br/>";
    print_r ($_GET);
  21. Replies
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    448

    Re: PIC to PIC (3 digit LED display)

    Speed up comm speed. Also add Timeout to hserin. Look in manual for details.
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    Re: PIC to PIC (3 digit LED display)

    Try
    Serout PortA.7,T1200,["No:",W2.highbYTE,W2.lowBYTE] ' Send two byte

    hserin [WAIT("No:"),W1.HIGHBYTE,W1.LOWBYTE] ' Get char from serial port (UART)
  23. Re: It is Y2K19 but DS18B20PAR+ Returns either 127 or 85 depending on resistor value.

    I guess it too much work, just count supported PIC. And it doesn't require more then 5min of reading datasheet.
    So probably they cannot justify investment.
    Also MCC(or what ever is called) have...
  24. Re: It is Y2K19 but DS18B20PAR+ Returns either 127 or 85 depending on resistor value.

    I don't know why people have so much trouble setting port.
    I always first set ANCON(ANSEL, etc), then TRIS, then optionally set port state (PORT or LAT register).
  25. Re: PIC 18F2431 PORTB.6 and 7 - strange behavior on restart after a few hours "rest"

    Not really. For debugging it isn't desirable. For stand alone usage, it is recommended. Sometimes it wotn't works without it.
    Pic should be released from reset, only when supply voltage is stable,...
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