Michael

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  • in reply to: Which pins does output jack connect to? #14573
    Michael
    Keymaster

    Hi Kevin,

    The output jack is not directly connected to an Arduino pin. It is connected to the digital to analog converter (DAC) chip.

    -Mike

    in reply to: Anyone planing to upgrade this sheild? #14473
    Michael
    Keymaster

    No, TVout is written in AVR assembly.

    in reply to: SRAM functions seem to fail #14457
    Michael
    Keymaster

    Hi wimbo,

    Hmm, there must be a connectivity problem for the SRAM chips or the SPI select pins for the chips. I have never had this problem before.
    Can you send good pictures of front and back of board to support [at] nootropicdesign.com? I’ll take a look.

    Debugging is difficult because the code runs really fast. Did you add debugging inside the ISR function? That won’t work. You can try reducing the sample rate to see if that helps. That will give non-ISR code more time to run.

    in reply to: Anyone planing to upgrade this sheild? #14451
    Michael
    Keymaster

    It would require a total rewrite because the video generation library (TVout) is written in AVR assembly.

    in reply to: Anyone planing to upgrade this sheild? #14416
    Michael
    Keymaster

    I would like to design a new board (not a shield) from the ground up using a faster microcontroller but I just don’t have time. It’s a ton of work to develop a new product. Maybe someday.

    in reply to: Hardware specific questions #14413
    Michael
    Keymaster

    The Lumazoid code is not going to work on an 8MHz microcontroller. A .hex file compiled for ATmega328 cannot be loaded onto an 8MHz Nano. If you want to use the source code, you will need to compile it for the target, but 8MHz is not fast enough to perform the audio analysis.
    Why don’t you just buy the product from me? I did the hard part for you already.

    in reply to: Hardware specific questions #14410
    Michael
    Keymaster

    xtal is 5mm x 3.2mm

    Abracon ABM3B-16.000MHZ-B2-T

    in reply to: Hardware specific questions #14408
    Michael
    Keymaster

    Yes, it is a 16MHz crystal. The Lumazoid is essentially an Arduino Uno.
    No, you could not use an ATtiny88. The Lumazoid requires a lot of memory.
    Yes, that is an ISP connector so I can program the bootloader onto the ATmega328. When I get manufactured boards from the factory, they have no bootloader. Once the ATmega328 has a bootloader, it can be programmed with Arduino over the serial connection.

    So, are you trying to replicate this product?

    in reply to: Cant get librarys to work #14373
    Michael
    Keymaster

    You can install the library by just dropping the TVout folder in your Arduino libraries folder. The library.properties file is not required by Arduino to use a library. Make sure you do not have the original TVout library installed there. Your error indicates it is finding the original TVout.

    So, in Arduino/libraries:

    
    TVout
    ├── TVout.cpp
    ├── TVout.h
    ├── TVoutPrint.cpp
    ├── examples
    │   ├── ClosedCaptions
    │   ├── DemoNTSC
    │   ├── DemoPAL
    │   ├── EdgeDetection
    │   ├── ExtractCaptionWords
    │   ├── NTSCserialTerm
    │   ├── ObjectTracking
    │   ├── OverlayDemo
    │   ├── TVBlaster
    │   ├── VideoFrameCapture
    │   └── VideoMIDI
    ├── keywords.txt
    ├── spec
    │   ├── asm_macros.h
    │   ├── hardware_setup.h
    │   └── video_properties.h
    ├── version\ history.txt
    ├── video_gen.cpp
    └── video_gen.h
    

    (sorry, this library is over 10 years old, long before the newer specs)

    • This reply was modified 9 months ago by Michael.
    in reply to: A Lasercut box to GameTimer Pro #14369
    Michael
    Keymaster

    Nice, thanks for contributing that!

    in reply to: Fading Overlay When Connected to VCR #14320
    Michael
    Keymaster

    Also, see this:

  • https://nootropicdesign.com/store/forums/topic/overlay-texts-and-graphics-too-transparentalmost-invisible/
  • Others have had the same issue and solved it by reducing the resistance of the 330 by adding another parallel path with another resistor.

in reply to: Fading Overlay When Connected to VCR #14319
Michael
Keymaster

I think that this is because your VCR is outputing a voltage that is higher than it should be, so the 1V signal from the Video Experimenter is not high enough to be fully opaque. Try adding a resistor in parallel with the 330 ohm resistor or 1K resistor. For example, if you run another 330 ohm resistor in parallel with it, the effective resistance is 330/2 ohms. I think this will raise the voltage of the output signal and make the “white” more opaque. Try experimenting with different values of resistors in parallel with the 330 and or 1K resistors to reduce that resistance to the output. You won’t break anything and I think you will find a way to make the white more opaque relative to the underylying video signal.

in reply to: Magic smoke: repairable? #14285
Michael
Keymaster

It’s likely that the voltage regulator got fried but maybe not. It’s very likely that the microcontroller got fried. Hard to test the microcontroller. Good news is that it can be replaced because it’s in a socket.

Are you in the U.S.?

in reply to: Where to find the schematics… #14269
Michael
Keymaster

Sorry, I haven’t published the schematics or board design because the Chinese have copied my products in the past.

in reply to: is my lumazoid broken? (burned smell, no lights) #14250
Michael
Keymaster

Burning electronics smell always means the same thing: burning electronics. If you hooked up power wrong, it’s fried. The music flows through because input is directly connected to output.

Viewing 15 posts - 1 through 15 (of 986 total)