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Project: F1 Steering Wheel (WIP) input welcomed :)

Discussion in 'Sim Racing Hardware' started by Devil_Dog, Feb 4, 2012.

  1. Devil_Dog

    I walk the line.

    I finally decided to go ahead with a project I've been wanting to do for some time now. Building myself an F1 wheel. I pretty much know what I want but could also use some guidance as well for some things. Mainly the electronics. So I will be building this starting with the electronics layout and will build the wheel around that so to say.

    The wheel will be attached to a G25 base but I will make it universal so I can attach it to other wheel bases so a quick disconnect will be in use as well. This is minor at this point but plays a key part as I want to keep this wheel and be able to use it when an upgrade comes around.;)

    So here is what I want to do. I want to have hard mounted paddle shifters on the wheel and possibly two clutch paddles as well. I'm thinking of using hall sensors for the clutch paddles but need to do some research on how to apply this. For the shifters I can use buttons for this.

    Now I do have some questions regarding the SLI-Pro. I'm unsure if I can hook up all of the buttons, switches and encoders to it. I don't know if I will need to add an additional HID device or not. Here is the short list of what I want to connect.

    The front face of the wheel:
    12 buttons
    central rotary switch with 12 configurable positions
    2 additional 12 position rotary switch
    rotary switch for display brightness
    two 12 position switches for changing display information
    2 rotary encoders for thumbs

    The back of the wheel:
    2 buttons for the paddle shifters
    2 buttons or hall sensors for the clutch

    Total for the front:
    6 rotary switches
    2 rotary encoders
    12 buttons

    Total for the back:
    2 buttons
    2 hall effect sensors/or some sort of switch

    Now is it possible to connect the above to an SLI-Pro or will i need to add another HID to achieve this?

    Thanks and pics will be posted as this project progresses.
  2. Hi Mike,
    I am at a similar point with my project and looking at hooking up the same array of switches,encoders, buttons and hall sensors. Will be interested in to see replies
  3. Hi

    Here is a list of the available inputs for the SLI-Pro :) You can use Potentiometer inputs for hall effect sensors, it will detect them automatically ;) You can work out what you can use from the list


    1) Brown +5V supply for potentiometer and rotary switches
    2) Red GND (shared among all buttons, switches and potentiometers)
    3) Orange Button 1
    4) Yellow Button 2
    5) Green Button 3
    6) Blue Button 4
    7) Violet Button 5
    8) Grey Button 6
    9) White Button 7
    10) Black Button 8
    11) Brown Rotary switch 1
    12) Red Rotary switch 2
    13) Orange Rotary switch 3 (or Button 29)
    14) Yellow Potentiometer 1


    1) Brown +5V supply for potentiometer and rotary switches
    2) Red GND (shared among all buttons, switches and potentiometers)
    3) Orange Button 9
    4) Yellow Button 10
    5) Green Button 11
    6) Blue Rotary switch 4 (or Button 30)
    7) Violet Button 12
    8) Grey Rotary switch 5 (or Button 31)
    9)White Rotary switch 6 (or Button 32)
    10) Black Potentiometer 2
    11) Brown Button 13
    12) Red Button 14
    13) Orange Button 15
    14) Yellow Button 16
  4. Devil_Dog

    I walk the line.

    Hey Brian, Thanks for the input. My biggest hurdle is the hall effect sensors. I have never used them before so trying to figure out the best way to utilize them for the clutch paddles is my biggest concern. I've been doing some research on them but am still unsure of how I should do this.
  5. The hall effect sensors are not too bad to use :) Just place a magnet close by and turn it! The trick is getting the distance right between the magnet and the Alegro sensor (and once found, keeping it there) The sensor is a 3 wire connect to a potentiometer input from memory :)

    You can get the sensors at Leo's site http://www.leobodnar.com/products/BU0836X/

    'Magnetic (Hall effect) sensor Allegro A1302 (datasheet) : £1.49
    This magnetic field sensor can be connected directly to controller analog input - connection diagram '

    (the RED highlighted words are links)

    Let me know if you need any more help ;)
  6. Devil_Dog

    I walk the line.

    Thanks Brian. The challenge I'm facing is housing and mounting it. I'm not sure how to really go about it. Being that it will be used for clutch paddles I'm trying to figure out the best way to achieve this. Also, do you have any suggestions for what type of magnet would be best for this application.

    Another note, I have a source here in the States to get the sensors. So I can get them within 2 days.;)

    Thanks again Brian.
  7. Best method is to mount the magnet in the end of 'spindle / axis' that the paddle will rotate on like Fanatec do with the sensors on the clubsport pedals. (I will try and find a pic) ;)

    EDIT: Stole a pic from Michael Heikes Thread, hope he does not mind! :)

  8. Devil_Dog

    I walk the line.

    I was looking at my CSP's and thinking about that but being that it will be on paddles I need to come up with a way to do it on a smaller scale. That's the challenge I have right now.;)
  9. Devil_Dog

    I walk the line.

    I would like to find some of these.


    I took apart an SRW-S1 to see what they are using.:oops:

    So using a miniature pot is an option as well. I may have to think about this if I can't come up with a good solution for the hall effect sensors.
  10. Hi Brian, your posts are great help. One question - will the sli-pro recognize two hall sensors i.e one for each paddle or should the be wired into 1 only of the pot inputs on the sli?
  11. Another lil question for you Brian
    How does Zroso get as many buttons, encoders, rotarys connected. In what config does he wire it up in?
  12. I have never actually used hall effects with an SLI-Pro.... But it would certainly be one per Pot input! As for the Zroso wheel, im not sure how many he has, but if you check the list above, you can work out the various combo's, but classic is 12 buttons, 2 encoders, 6 rotary switches... But you can trade some rotary switches for extra buttons (total of 20) and then use them even as extra Encoders (two button inputs per encoder). After than, the obvious way is to add a BU0836 or similar to give you up to another 32 button/16 encoders (wired in a matrix) :)
  13. Jim Cole

    Jim Cole

    Slightly off topic, and stealing the thread for one sec, but what do most guys use the rotary encoders for?
  14. encoders are for BRake Bias, Volume control (chat in iracing, Spotter volume), increase and decrease values (ie in adding tyre pressure, and fuel( so instead of ussing toggel switches or 2 x buttons) rotary encoders are much better. I want to get one on my button box. there are only 2 rotary switch, didn't have time to wire it. hmmm
  15. MrPix

    Project Immersion

    fantastic.... never thought of that use.... I was wondering what I could use the 2 spare I have on my F1 wheel project... now I have the answer... thanks.
  16. You're welcomed, btw just ordered 10 encoders off ebay, lol gonna have some fun with setting them up when they came, probably just end up using 3
  17. Hey guys, thought id post a pic of my work in progress.
    How do i wire my rotary encoders. Do they have 5V in and use 2 button wires for the outputs. Or do they have a GND instead of 5V? _MG_0968.JPG
    • Like Like x 1
  18. Ask Roso F1 wheels, he´s making some truly amazing wheels.


    He runs HALL sensors on the clutch paddles so he if any will know what to do.
  19. Hello! Could you tell please,where did you get pushbattons?
  20. RS Components - However i made plastic adapters to recess them in