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Tutorial Hydraulic handbrake converted to load-cell

Discussion in 'DIY peripherals' started by RacingMat, Sep 10, 2015.

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  1. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Hello!

    I started a project of hydraulic handbrake
    I wished to do like DSD
    dsdhydhb.png
    http://www.isrtv.com/forums/topic/10762-dsd-hydraulic-handbrake-diy-project/

    but it would have cost 150€...

    So I decided to convert my hydraulic handbrake into a load-cell handbrake!
    the overall cost is 40€
    • Like Like x 5
    Last edited: Feb 9, 2016
    RacingMat, Sep 10, 2015
    #1
  2. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    shopping list

    eBay 33€
    "HYDRAULIC HAND BRAKE WITH PUMP S14 S15 AE86 RX7 DRIFT HORIZONTAL VERTICAL RED"
    http://www.ebay.fr/itm/HYDRAULIC-HA...ERTICAL-RED-/311068773989?hash=item486d24ce65
    $_57.JPG

    load-cell amplifier - HX711
    communicates in SPI with an arduino for example
    www.arduino.cc/en/Reference/SPI
    0,69€
    http://www.aliexpress.com/item/For-Arduino-Dual-channel-HX711-Weighing-Pressure-Sensor-24-bit-Precision-A-D-Module/32323968927.html


    ____________________________

    IP65-20kg-Electronic-Digital-Scale-Weighing-Sensor-Aluminum-Alloy-.jpg_220x220.jpg
    http://fr.aliexpress.com/item/20kg-....tmeRpX&ws_ab_test=201407_2,201444_6,201409_3
    4,87€ load cell 20kg
    • Like Like x 2
    Last edited: Sep 18, 2015
    RacingMat, Sep 10, 2015
    #2
  3. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    • Like Like x 1
    Last edited: Sep 10, 2015
    RacingMat, Sep 10, 2015
    #3
  4. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Building steps:

    635319Freinamainloadcell1.jpg 588279Freinamainloadcell3.jpg 188311Freinamainloadcell6.jpg 115823freinamainloadcell6.png 433876freinamainloadcell4.png IMG_1173.JPG IMG_1172.JPG


    spring.jpg
    I had to add a spring behind the load-cell in order to come back to zero value.
    Without spring, the handbrake was seen as still braking by windows controller.

    It very good now and I think it is finished. :cheers
    Hopefully I have other sim projects awaiting me!
    • Like Like x 2
    Last edited: Oct 2, 2015
    RacingMat, Sep 10, 2015
    #4
  5. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    First video:
    • Like Like x 4
    RacingMat, Sep 10, 2015
    #5
  6. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Link to PC
    via CSP pedal handbrake analog comport

    this pinout from https://www.gtplanet.net/forum/threads/clubsport-and-csr-elite-pedals-handbrake-diy-info.280445/

    proxy.jpg

    Thanks to Mrbasher, here is how I wired the hand brake onto the PCB
    branchement frein à main sur CSP V2 pinout.JPG

    branchement frein à main sur CSP V2 (2).JPG
    Last edited: Sep 15, 2015
    RacingMat, Sep 10, 2015
    #6
  7. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    [reserved Work In Progress]
    RacingMat, Sep 10, 2015
    #7
  8. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Nice work @RacingMat :thumbs

    From the video it seems to have good 'feel', like you would expect in a hydraulic system, does that translate well in a game?
    noorbeast, Sep 10, 2015
    #8
  9. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Thanks @noorbeast!

    Yes, the feeling is good. But I'll replace the "french" damper 964382Freinamain24.jpg
    by a harder damper in order to reduce the range of motion of the handle.
    It's adjustable.

    It's not yet wired to be connected to PC. Probably this week-end ;)

    Any hint for CSP pinout? @HoiHman @Nick Moxley
    • Like Like x 2
    RacingMat, Sep 10, 2015
    #9
  10. tombo

    tombo Active Member

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    Hello,
    interesting project. At the moment I'm on vecacion. At sundy I'm back home and can take a look at my csp for pinout.
    tombo, Sep 10, 2015
    #10
  11. Nick Moxley

    Nick Moxley Well-Known Member

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    Nah never got into the Pin out of the PCB, sorry matt.

    If you still need a hand i can ask around, Jon from Basherboard would 100% know for sure.

    What EXACTLY do you want to know ?
    Nick Moxley, Sep 10, 2015
    #11
  12. Historiker

    Historiker Dramamine Adict Gold Contributor

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    Mat, Pin 2 is the sweeper from the pot so yes it reads the voltage change. I did this mod on my Fanatec Elite pedals as well. Then I switched to a Teensie ++2.0 instead when I built my button box/shifter
    Historiker, Sep 11, 2015
    #12
  13. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Thanks guys! salut.gif

    As I didn't find any spedification from Fanatec documentation,
    before wiring, I'm just worried about the little mistake written in the post https://www.gtplanet.net/forum/threads/clubsport-and-csr-elite-pedals-handbrake-diy-info.280445/
    Like Historikr, I think it should be pin 2.

    I'm interested in your feedback! and Jon's expert information on how to plug an analogic handbrake on the CSP V2.
    RacingMat, Sep 11, 2015
    #13
  14. Historiker

    Historiker Dramamine Adict Gold Contributor

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    Mat, use a volt/ohm meter with the board plugged in and check the pins for voltage.
    • Agree Agree x 1
    Historiker, Sep 11, 2015
    #14
  15. Nick Moxley

    Nick Moxley Well-Known Member

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    Jon can be reached here http://www.basherboards.com/contact

    If you want to drop my name, Go for it. Jon's a good guy and actually sold me my First EVER fanatec product, The V2's. :thumbs
    • Friendly Friendly x 2
    Nick Moxley, Sep 11, 2015
    #15
  16. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Thanks Nick!

    Ok, I have had a look with the voltmeter: look.gif
    nada...

    but when i check between pin 1 and 3, then the throttle adn brake are varying in windows controler...

    Then I lost my throttle and I had to restart twice to get it back... but no voltage
    Last edited: Sep 12, 2015
    RacingMat, Sep 12, 2015
    #16
  17. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Finally, I didn't manage to read any voltage... but I wired the handbrake: it works!! spasibo.gif

    I'll post some pictures
    RacingMat, Sep 13, 2015
    #17
  18. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    It works fine!

    Here is the pinout with colored wires

    branchement frein à main sur CSP V2 pinout.JPG
    • Like Like x 3
    • Useful Useful x 2
    RacingMat, Sep 15, 2015
    #18
  19. tombo

    tombo Active Member

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    Really nice work. :thumbs

    I have many loadcells laying around as replacement for Fanatec Break pedal.
    So I have a question. In the pedal thread you wrote you need two loadcells for a Bridge.
    You use only one. Does your lodcell internally consits of two?

    Sorry but I never worked with loadcells.
    tombo, Sep 15, 2015
    #19
  20. Nick Moxley

    Nick Moxley Well-Known Member

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    the Fanatec Cells are only a 1/2 bridge as i understand.
    • Informative Informative x 1
    Nick Moxley, Sep 15, 2015
    #20
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