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  1. Replies
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    6,865

    Re: Chattering relay

    The other option (just spitballing here) would be to put a cap across the coil. It slows down the coil release. Not very useful if you need the relay to release fast, but I have used it in a couple...
  2. Thread: Metal Detector

    by andywpg
    Replies
    18
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    82,642

    Re: Metal Detector

    Thanks much!
  3. Re: No program response, including config instructions

    Don't know if this will help at all (I haven't read the whole thread yet) but here's one I use on a project of mine. Remember that, in my case, I only have to drive the servo from one extreme to...
  4. Thread: 3D printer

    by andywpg
    Replies
    22
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    22,319

    Re: 3D printer

    I've had this one for a few months now - very happy with it. The resolution is .2mm though (actually .1984mm) and I think you are looking at pretty heavy cash for ACCURATE .1mm resolution. Lots...
  5. Replies
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    10,356

    Re: Wow! SPAM storm today!

    I don't think any legitimate user is going to have a problem with that. Its almost ubiquitous on forums around the net.

    I vote yes!
  6. Replies
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    10,356

    Wow! SPAM storm today!

    Holy crap there's a lot of spam today!
  7. Replies
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    3,475

    Re: Connect two PICs?

    That's kind of what I was leaning toward.

    Thanks Henrik
  8. Replies
    3
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    3,475

    Connect two PICs?

    I have a situation where I need to connect two PICs. One is the 'master' and one is the slave. An output on the master goes to an input on the slave (weak pull-up enabled) and I only need to signal...
  9. Replies
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    19,627

    Re: Strange problem with 'pauseus' command

    I thank you Sir. MUCH better resolution, like you said. While I have used DT's Instant Interrupts a little,
    I have not used them a lot. I'm starting to get a handle on how you did that. In fact,...
  10. Replies
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    19,627

    Re: Strange problem with 'pauseus' command

    Sorry, forgot to mention that I did define PERIOD_COUNT as a word when I doubled everything.

    Thanks,

    Andy
  11. Replies
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    19,627

    Strange problem with 'pauseus' command

    I am having a weird problem here, and I'm wondering if someone has any idea
    what's going on. I'm building a new version of my charcoal smoker temperature
    controller, and decided to incorporate a...
  12. Replies
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    4,000

    Re: Fake tp4056 parts - clone

    I gave up on clone PICs from China a while back - too many problems. I order from Microchip Direct. Not a whole lot more money, but the quality (and delivery speed!) are there.
  13. Replies
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    3,442

    Re: Vfd vaf1613-12lsr2

    Not sure if this helps, the digits of the model number after the dash are different, but this might work.....

    http://www.farnell.com/datasheets/21126.pdf
  14. Replies
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    26,165

    Re: 5V to 3.3V communication

    In my case, some of the ic's I was using can ONLY run at 5V. The only thing that could only run at 3.3V was the XBee radio. So it was simpler to run everything at 5V and convert to talk to the XBee.
  15. Replies
    13
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    26,165

    Re: 5V to 3.3V communication

    Thanks - good price.
  16. Replies
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    26,165

    Re: 5V to 3.3V communication

    I've used THIS on a couple of projects and love 'em.
  17. Re: In Circuit programming / boot loader options?

    I absolutely LOVE the Programmer-To-Go abilities! When I was tuning the PID loops for my first version of my charcoal smoker controller, I had the smoker going in the back yard. When I wanted to...
  18. Re: In Circuit programming / boot loader options?

    Personally, I've never used a bootloader (not even sure if I would know HOW). I've always just put an ICSP header on any circuit I build, That way, when I'm developing a program, I leave the...
  19. Replies
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    4,347

    Re: issue with DEBUG, please help

    Nope. You have to go the advanced editor (at least I do) and select 'Wrap CODE tags'. Looks like this: #
    Creates a window like this that you can scroll up and down in
  20. Re: 38Khz IR carrier - best way to turn it on and off

    I'm using the 8Mhz internal oscillator. I'm curious how you figured that out though, could you educate me?

    What if I used a 10 or 16Mhz crystal? I have both on hand.
  21. Re: 38Khz IR carrier - best way to turn it on and off - SOLVED

    Thanks Everyone!

    It worked!

    The answer was a pull down resistor. It got rid of that slope. I tried a few, and worked out that 4.7K was the highest value I could use. That gave me a final...
  22. Re: 38Khz IR carrier - best way to turn it on and off

    From what I understand of what was quoted, 32768Hz was maximum WITHOUT using longs. I'm using an 18F2550, and when I compile, I get the following message:

    '[MESSAGE]pic18f2550.pbpinc(285): LONG...
  23. Re: 38Khz IR carrier - best way to turn it on and off

    Well, the scope has measurement functions. Again, this is NOT an expensive scope ($75), but it was reporting 38.46KHz and 26uS period......both right in the ballpark of what I was looking for.


    ...
  24. Re: 38Khz IR carrier - best way to turn it on and off

    Hmm, tried it, but I couldn't get the frequency up high enough due to the 'setup time' of HPWM. See below though.....got it looking great now.

    Thanks Art,

    Andy
  25. Re: 38Khz IR carrier - best way to turn it on and off

    Wow! You are SO right - looks MUCH better now. Thanks!

    8112

    Still has that slope on it though. I might try DT's Instant Interrupts and use a pin on and off to get it. Here's what the code...
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