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Thread: hellllllp

  1. hellllllp

    hi , i'm new to everything you folks talk about. i hope someone can help in a way i can understand.(non tech non math etc)
    straight up hack wd b fine!! here's the problem:

    i am converting my 35 yr old pontoon boat into a paddlewheeler. i have just bought a JAZZY SELECT wheelchair to power my wheel. i'm using the seat (with the upgrade controller), batteries(new), and the onboard computer. the problem is that i would prefer to use 1 motor for my drive and keep the other for a spare. this is a problem for the computer which sees a motor fault and will not run. the question: is there a hack to allow the computer to function with only one motor attached? any help appreciated ....thanx

  2. #2

    Re: hellllllp

    I don't know of a hack to make the Jazzy controller believe two motors are OK.
    You could replace it with another controller.
    The Jazzy Select 6 is rated at 12V / 40A: http://www.pridemobility.com/jazzy/jazzyselect6.asp
    If that's the model you have, then a controller like this might work: http://www.ionmc.com/RoboClaw-HV-2x6...0VDC_p_12.html
    You can hook up analog joysticks (or a R/C car remote control, or an Arduino) to this controller and make it go. You can drive just one motor with this controller.

    Regarding how to water-proof your set-up, I don't have any good ideas, though :-)

  3. Re: hellllllp

    Quote Originally Posted by jwatte View Post
    I don't know of a hack to make the Jazzy controller believe two motors are OK.
    You could replace it with another controller.
    The Jazzy Select 6 is rated at 12V / 40A: http://www.pridemobility.com/jazzy/jazzyselect6.asp
    If that's the model you have, then a controller like this might work: http://www.ionmc.com/RoboClaw-HV-2x6...0VDC_p_12.html
    You can hook up analog joysticks (or a R/C car remote control, or an Arduino) to this controller and make it go. You can drive just one motor with this controller.

    Regarding how to water-proof your set-up, I don't have any good ideas, though :-)
    just spoke to a motor repair expert who was not a computer guy, and his thought was a jumper with a resistor across the power output of the computer.........any thoughts?????????? btw it's a 24v system 12v for brakes 24v for motor

  4. Re: hellllllp

    output of the computer is 12v for brakes and 24v for motor. had a thought , and checked with a motor expert ( who did not have computer knowledge on this machine) : what about a resistor = to the motor load, jumped across the outputs? thanx

  5. #5

    Re: hellllllp

    That may work, or might not, depending on the specifics of the controller.

    I'd use a fairly high ohm resistor -- in the 100 ohm to 1000 ohm range -- to avoid burning too much power (and needing a very high-power resistor.) Then again, the controller may not like that.

    With 24V and a 100 ohm resistor, you'll get 240 mA, which ends up being 24W, so a 25W resistor/heating element would be about right. WIth 1000 ohm, you'll get 24 mA, which ends up being 2.4W, so a 3W or 5W resistor will be sufficient (and cheaper.) Depends on what the controller "wants" to see.
    Here's one you can try: http://www.digikey.com/product-detai...1.0K-ND/257679

    Note that the resistors will get hot!

    The RoboClaw controller can do 24V as well as 12V, btw, if you want to go that way in the end.
    Last edited by jwatte; 09-04-2015 at 02:22 PM.

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