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Thread: Resistance Provided by MR soundboard?

  1. #31

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    OK so let me get this straight- the battery+ lead goes to the far left prong, then the battery- lead goes to the middle prong, then both of the board+ leads go to the last prong, then the board- goes to the middle prong, too? Sorry I should have explained that my board has 2 battery+ leads and one battery- lead.

  2. #32
    Jedi Knight
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    Azmaria Dei's Avatar
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    you have 2 Bat+ wires? O.o outside of my range of experience on that one, but yes that sounds right. is that second Bat+ a speaker wire perhaps?
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  3. #33

  4. #34

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    Yes both positives of the MR board to the output of the regulator. The mace versions had a 6AA battery setup that was set at 2 parallel circuits of 3AA batteries in series, thus providing more current but same voltage for longer run time. Both board positives need to be connected for it to work.

    Hokey religions and ancient weapons are no match for a good blaster at your side, kid.

  5. #35

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    Alright thanks guys! I have come to a decision- I'll- for now- replace the alkalines with Ni-MHs, and just get my fx soundboard set up up and running. Then, after I get some more $$ and experience, I'll make a simple Li-ion pack, then after that, I'll include a recharge port.( I haven't researched these at all, so I'm sure I'll be back bugging you guys about that soon enough! haha)

  6. #36

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    Hey so with this setup- 4 AAA Ni-Mhs, a Mace MR FX board, Lux III green led, SPST Guarded switch, premium speaker- how much run time shall I expect before the charge dies?

  7. #37
    Council Member Novastar's Avatar
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    Runtime can (roughly) be calculated by looking at the mAh (NOT TO BE CONFUSED WITH "mA", which is current)... rating of the cells... then getting an idea of how much juice you're generally drawing when the saber is on (it will probably be around 1.1A or something, possibly a bit more). Then, you simply divide mAh (millampere hours) by your draw.

    For example...
    If you have "2600mAh" rated cells...
    And you are basically drawing ~1A because of your LED, circuit, indicators, speaker, blah blah blah...
    You are likely to get ~2.6 hours of runtime.
    As always, your mileage may vary, due to companies "over-rating" themselves, and/or unexpected/uncalculated extras. But in general--unless you miscalculate HORRIBLY, you won't see a giant difference.

    Usually, you can expect an "average bear" saber to run for ~2 hours. Not to mention, I usually (purposely) UNDER-calculate, and just assume I'll "magically" get LESS runtime from a saber... say 25% less... and then I'm rarely surprised if a saber runs outta da juice...
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  8. #38
    Jedi Knight
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    when doing your calculations, generallising most soundboards as 300mA and the econo boards as 150mA is pretty safe. with your setup you're probably looking at ~1300mA draw with 850mAh batteries so i would say 30-40 minutes.

    Nova - welcome back! it's good to see you posting here again! ^_^
    CLICK HERE FOR ALL YOUR ECONO SOUND BOARD WIRING DIAGRAM NEEDS!

    Duel - to fight someone 1 on 1. Dual - 2 of something in line with each other.
    Quote Originally Posted by Multiple People
    To Azmaria listen you should...

  9. #39

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    Ok great thats a good formula to know Nova, thanks a lot! Azmaria, thanks for doing the calculations for me, I was expecting a little bit more out of these batteries. A recharge port would work with Ni-MHs, correct? If it does, it would be much more convenient to simply plug my saber in like a cell phone, rather tan have to deconstruct my beauty every 35 min. of runtime!

  10. #40

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    Yes you can wire in NiMH with a recharge port. Just make sure you have the right charger and plug adapter for them, and don't get the Li-ion by mistake.
    We all have to start somewhere. The journey is all the more impressive by our humble beginnings.

    http://led.linear1.org/1led.wiz for the lazy man's resistor calculator!
    http://forums.thecustomsabershop.com...e-to-Ohm-s-Law for getting resistor values the right way!

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