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  1. #11
    Join Date
    Jan 2006
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    Ashley,

    That sounds interesting using Arduino. Looking forward to your photos. Also if people who are not as electronic minded as your shelf might find it a bit daunting. How did you use the Ardunio and any wiring diagram. I see a new project happening.

  2. #12
    Ok, I used an Arduino to control a VNH5019 Motor Driver. The VNH5019 has an analogue output proportional to the motor drive current which is read by the Arduino and is used to determine when to stop "pulling" the handbrake on. With this scheme you can set the pulling force applied by the actuator hence how hard the handbrake grips.

    I already had the arduino, an AtMega, as I use it t do other things in the car but a smaller Arduino would be perfectly adequate, it must have one analogue input and about half a dozen digital IO. Unfortunately I don't have any photos of the electronics but here are a few of the actuator installed on a GDEuro chassis.
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  3. #13
    Join Date
    Feb 2011
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    Northampton
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    40
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    3,617
    Hm, the driver is cheap (suspiciously cheap, but I'm old and cynical!) - http://www.hobbytronics.co.uk/vnh5019-motor-driver
    Then you just have to navigate the bewildering range of Arduino boards to find one with the right I/O..
    My DeDion build diary..
    Hon Sec of the Digidash branch of the Unpopular Kit Car Design club

  4. #14
    I'm sure you'd be able to find more expensive drivers

    An Arduino Micro would do the trick.

  5. #15
    Join Date
    Dec 2013
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    Newark, Notts
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    I used the Hollins Actuator which works great. Expensive at £298 but that is a complete kit with the electronic board. You adjust the torque via a small screw on the electronic board.
    Charlie
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  6. #16
    Join Date
    Feb 2011
    Location
    Northampton
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    40
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    3,617
    Quote Originally Posted by AshleyD View Post
    I'm sure you'd be able to find more expensive drivers
    You can always find more expensive versions Although at a cursory glance they were all the same PCB, probably spat out of the same factory in Mao's Poundland

    An Arduino Micro would do the trick.
    I probably have one of those somewhere .. in amongst the half a dozen Rasperry Pis and the Particle development boards
    My DeDion build diary..
    Hon Sec of the Digidash branch of the Unpopular Kit Car Design club

  7. #17
    Hi

    I to have been thinking about fitting one.
    I read most of the old threads on the subject, in one thread someone was developing a pcb solution. Did that get finished? I also looked at the Hollins version and as was said appears expensive relative to the component part cost but it looks like it works. There is another version around for a disabled car conversion which is proportional in handbrake operation ie you can put on or off partially, but that was 3 to 4 times the Hollins price for a kit of parts.

    As for the Arduino micro I have enough trouble typing this question!

    Just wanted to get the latest thoughts

    thanks Ian

  8. #18
    Join Date
    Apr 2005
    Location
    Worcestershire
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    44
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    2,079
    The Hollins system uses a PCB, I have a PCB that works on my AK (after about three attempts), and at about half the cost of Hollins.

    I have three copies of the PCB but I’m not offering it as a solution (again) until it’s been IVAd and used for a bit.

  9. #19
    Quote Originally Posted by cperry View Post
    The Hollins system uses a PCB, I have a PCB that works on my AK (after about three attempts), and at about half the cost of Hollins.

    I have three copies of the PCB but I’m not offering it as a solution (again) until it’s been IVAd and used for a bit.
    I understand your caution, I think I will bite the bullet and go with the Hollin version

    thanks for the reply

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