Michael

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Viewing 15 posts - 736 through 750 (of 1,008 total)
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  • in reply to: voltage regulator problem #1074
    Michael
    Keymaster

    Sounds like one of the pins that is connected to VCC is shorted against the ground plane. It can be any of the pins highlighted in the diagram here:
    http://nootropicdesign.com/forum/viewtopic.php?f=34&t=2486

    Try removing some solder from each of these pins, and test continuity between the voltage regulator output and ground (two rightmost pins as viewed from top). The short is not necessarily at the voltage regulator — it can be at any of the other pins, too.

    There’s probably a bit of excess solder shorting against a tiny bit of exposed copper around a pad. Sometimes copper can be exposed if the solder mask is burned away during soldering. This problem can often be fixed with a little work. Good luck and tell us your results!

    in reply to: You’ve got your XDS in my Captions #1002
    Michael
    Keymaster

    Some TV channels seem to intermix the data like that. You should try tuning the pots a bit, or try finding the CC data on a different line.

    in reply to: firmware replace problem with arduino 1.0 #1001
    Michael
    Keymaster

    Hmm. I’m not sure what is wrong, your settings look correct.

    Have you tried removing the ATmega328 chip and inserting it into an Arduino to upload to it?

    in reply to: ordering video experimenter from india #998
    Michael
    Keymaster

    PayPal is declining your card. There is nothing nootropic design can do about that issue. We regularly sell and ship all over the world, including India.

    in reply to: beep pitch? #978
    Michael
    Keymaster

    The Defusable Clock code is all open source and available on the web site.
    http://nootropicdesign.com/defusableclock/hack.html

    in reply to: ARDUINO UNO AND VIDEO EXPERIMENTER SHIELD #980
    Michael
    Keymaster

    You can read data from the Serial line using the pollserial implementation that comes with the TVout library. This way you can display data from a computer to the screen.

    See this example of how to read from serial and print to screen:
    http://code.google.com/p/arduino-tvout/wiki/EX2

    in reply to: ARDUINO UNO AND VIDEO EXPERIMENTER SHIELD #855
    Michael
    Keymaster

    Are you simply asking how to display things on the video output signal? Have you looked at this project:
    http://nootropicdesign.com/projectlab/2011/03/20/text-and-graphics-overlay/

    in reply to: how long can the DET button be held without activtion? #901
    Michael
    Keymaster

    There’s no limit. The code doesn’t care how long you hold the button down.

    in reply to: 3 LED’s stay on solid after disarm? #984
    Michael
    Keymaster

    Yes, these types of modifications can be done by changing the code. Have you studied the code? It is downloadable from here: http://nootropicdesign.com/defusableclock/hack.html

    This is the bit of code that controls what happens when the device is defused or not.


    if (!defused) {
    detonate();
    } else {
    beep(4500, 80);
    delay(2000);
    displayCountdown = false;
    }
    Michael
    Keymaster

    Well, you could do that, but I’m not sure what you think you can do on the ChipKit that you can’t do on a Mega. The Video Experimenter doesn’t work on a Mega, but can work on a Seeeduino Mega.
    See this: http://nootropicdesign.com/projectlab/2011/07/13/ve-on-the-seeeduino-mega/

    What “video processing” do you want to do? Why do you need a faster processor?

    Michael
    Keymaster

    Rewriting the TVout library for PIC microcontrollers is no small task, even for a seasoned programmer. I’m afraid I don’t have any PIC assembly experience, so I’m not the right guy.

    In theory an LM1881 chip should be usable with the UNO32, but as you said, the wiring would be different. Not sure if the wiring can be changed to make the shield work on it.

    in reply to: Poofy Adventure Game #856
    Michael
    Keymaster

    My “testing team” has taken a look at this and they like it. I think it’s cool. It seems like Poofy can jump pretty high, but maybe he could jump a little farther horizontally. I think your collision detection is fine — bounding box is simple.
    Game play seems good — great game! You are pushing the limits of what can be done on such a small MCU.

    in reply to: Relay Question #853
    Michael
    Keymaster

    Hmm, it looks like it requires 12V to operate. The ATmega328 output pins are 5V. I suppose you could have an output pin control a transistor which controls the relay.

    in reply to: Poofy Adventure Game #860
    Michael
    Keymaster

    I will have my testing team try this game out this weekend. My testing team is my kids. ;D

    in reply to: Random wire? #909
    Michael
    Keymaster

    The behavior can be easily changed with reprogramming. If you have an FTDI USB to serial cable or adapter, it’s fairly easy. I could make the code changes for you.

    OR, if you are willing to pay a nominal fee (say, $7 if you are in the US) I can ship you a reprogrammed ATmega328 chip with no randomness. If you are overseas, I’d need to charge more for shipping.

Viewing 15 posts - 736 through 750 (of 1,008 total)