Michael

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  • 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.

    in reply to: Help: No visualizations #14245
    Michael
    Keymaster

    Given that the LED strip successfully works when changing modes, there must be a bad connection along the audio path to the microcontroller. You might try pressing down on the microcontroller chip to see if it proves this point but I think you need a replacement. Can you contact us privately if that is the case? https://nootropicdesign.com/store/contact-us/

    in reply to: Play back buffer #14236
    Michael
    Keymaster

    Your understanding is correct. The value 128 is the middle value for an 8 bit value which has a range of 0-255. 128 represents the baseline of a waveform, or silence.

    • This reply was modified 1 month, 1 week ago by Michael.
    in reply to: Total recorded sample length #14233
    Michael
    Keymaster

    You’re right, 262144/22000 = 11.9s.
    I’m not sure how I came up with 12.9 in the documentation. It was many years ago.

    in reply to: Recorded sample start and end times #14126
    Michael
    Keymaster

    Yes, that should be possible. The sample playback starts at address 0 of the first chip, and if the playback address reaches the max address of the first chip, it switches to address 0 of the second chip.

    You’ll have to study the code to do this. If your serial connection can send in a number, then playback can start at that address. Likewise you can send in an end address and stop at that address. It’s a little complicated because there are 2 chips, so I’d implement with only 1 memory chip to start.

    in reply to: RX midi input #14113
    Michael
    Keymaster

    I’m afraid an I/O expander isn’t going to help here, as the Arduino pins used by the Audio Hacker are for high-speed SPI communication with the memory, ADC, and DAC. You can use the analog pins as digital pins, too, so you should be able to do software serial using any of the analog pins.

    in reply to: Love this thing #14016
    Michael
    Keymaster

    Great. Yeah, you don’t want to solder surface mount components by hand. This is done in a factory, except for a few hand-soldered connectors.

    in reply to: Implementing n# attempts to defuse the bomb via keypad #13657
    Michael
    Keymaster

    Nice work, Djair! Yes, I have made a similar customization for some escape room customers, too. I’m glad you are using the Game Timer Pro in Brazil for different escape room customers! Thank you for your business.

    in reply to: Overlay depth sensor data #13403
    Michael
    Keymaster

    You are on the right track. tv.print() should be printing to the screen, overlaying on the video. If it’s not working, please post your code, and format with code tags so we can read it. You should be starting from a working example like this: https://nootropicdesign.com/projectlab/2011/03/20/text-and-graphics-overlay/

    • This reply was modified 10 months, 3 weeks ago by Michael.
    • This reply was modified 10 months, 3 weeks ago by Michael.
    in reply to: Two Audio Hacker Boards #13339
    Michael
    Keymaster

    No, that just won’t work. They’d be fighting over the same pins.

    in reply to: Audio Hacker w/ mega 2560, Vin not working? #13337
    Michael
    Keymaster

    Sometimes the pins from the shield don’t make good contact with the Arduino headers. Bending them slightly in one direction or the other can fix that.

    in reply to: Electret Clip Microphone #13325
    Michael
    Keymaster

    I’ve used electret microphones with no problem. It needs to be powered, of course. See https://nootropicdesign.com/projectlab/2013/07/05/electret-microphone-audio-hacker/

    The microphone you are linking to above will not work because it has 4 conductors on the plug. that is a TRRS plug. The audio Hacker needs an input with 3 conductors, TRS (tip, ring, sleeve).

    in reply to: Letters missing from the closed caption #13313
    Michael
    Keymaster

    Hi Sujan,

    This is not a coding error. The closed caption decoding works by detecting the flashing white bars. It’s not going to be perfect every time. Imagine how hard it is to detect every character byte that is displayed on the screen with the white bars as the bits. It’s quite a miracle that you can decode *any* of the caption data. Many people cannot get it to work at all. You are doing quite well!

    -Mike

Viewing 15 posts - 1 through 15 (of 974 total)