Octolively Board

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This topic contains 19 replies, has 3 voices, and was last updated by  Kal22378 2 years, 5 months ago.

Viewing 15 posts - 1 through 15 (of 20 total)
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  • #20613

    Kal22378
    Participant

    Can anyone suggest what frequency crystal resonator to use with the Octolively board?

    #22781

    Windell Oskay
    Keymaster

    The microcontroller in the Octolively kits comes preprogrammed (via its fuse bits) to use the internal oscillator, rather than an external crystal.

    #22782

    Kal22378
    Participant

    Ok, so if I write the code onto a new atmega 164 it will be programmed the same way to use the internal oscillator?

    #22783

    Windell Oskay
    Keymaster

    A new ATmega164 comes with the fuses set to run on the internal oscillator. The fuse settings are essentially independent of your code– if you set the fuse bits to continue using the internal oscillator, then it will continue to use the internal oscillator. If you set the fuse bits to require an external crystal, then you’ll need an external crystal compatible with the fuse settings that you apply.

    #22784

    Kal22378
    Participant

    Ok thank you for explaining this to me. I am new at this, but im sure you could tell..!!!!

    #22785

    Kal22378
    Participant

    I have one more question about these boards. If I connect multiple boards together and if I press one mode switch will it sync all of the other boards to that mode?

    #22786

    Windell Oskay
    Keymaster

    No, the mode buttons are intentionally not linked. You can hook them all together with a wire if you like; some people have done that.

    #22787

    Kal22378
    Participant

    Ok, Thanks again Windell.

    #22788

    Kal22378
    Participant

    I have another question for you Windell. Can i make one atmega164 control 128 sensors and leds by using a TLC5940 and a 16 to 1 MUX sheild? If so do i need to rewrite a new code also?

    #22789

    Windell Oskay
    Keymaster

    If you want to control 128 sensors and LEDs, you’ll need 128 inputs, and 128 outputs. If you’re arranging these like the Octolively does, with one IR LED per sensor, you’ll also need 128 outputs for those LEDs.  Not sure how you get there with 15 extra I/O pins through your shield plus ~14 extra LED outputs.

    #22790

    Kal22378
    Participant

    Ok thanks

    #22791

    Kal22378
    Participant

    How far apart do you recomend that the ir tx and ir rx be spaced apart?

    #22792

    Windell Oskay
    Keymaster

    I’d suggest following similar spacing to what we have on the Octolively boards.

    #22793

    Kal22378
    Participant

    Hey Windell…..I was wondering if a different Atmega microcontroller would work with this code?
    Atmega16?
    Atmega32?

    #22794

    Kal22378
    Participant

    For the Octolively schematic I mean.
    Thanks

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