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config help: rumble motor on brake pedal

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 pwar
(@pwar)
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Joined: 5 years ago
Posts: 2
Topic starter  
So I was wondering if anyone could help troubleshoot the simhub settings I need for my rumble motor on the brake pedal during tyre lock-up?
A quick summary of where I am so far. I have my motor connected to Arduino Nano clone being switched via a transistor driven by PWM output on a digital pin. All works great.
I have the 'wheel lock' assigned via the 'motors output' page of simhub. Again works fine.
I think the issue I'm having is somewhere in the 'effects profile' section. I'm running the defaults: trigger at 20%, gamma 1, threshold 0, min force 0, input gain 100. I couldn't really find anywhere in the documentation that adequately describes how all these parameters affect the behaviour.
The problem that I'm having is that in Project Cars 2 the rumble motor spins up any time I hit the brake. And from what I can tell it basically turns on at somewhere like 20% brake actuation, not when the wheels are locking. In fact there is no discernable difference when the wheels lock (and I get the audio cue). As I have it configured at the moment it's just a glorified brake pedal indicator!
Does anyone have any experience setting this up so that it only activates when wheel lock occurs? Many thanks in advance because I'm soooo close to having a finished and working project!
(if this question has been asked a million times then apologies, happy for you to just provide a link to the relevant thread)

   
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(@admin5435)
Prominent Member Admin
Joined: 7 years ago
Posts: 731
 

Hi ! These effects are indeed computed in an analog mode based on the wheel slip (it's not on/off) so it's normal to get some slip when braking.

If you want something more "binary" you can use a higher threshold (it will cut all the smaller effects) and eventually a higher minimum force (so the motor will start stronger.

you can see the impact of each setting in realtime on the response curve :

Do not hesitate to use the record replay feature so you can replay game data and tune the settings to your will comfortably out of game :

 

I've added a complete description of these settings here (write in progress): https://github.com/SHWotever/SimHub/wiki/ShakeIt-V3-Effects-configuration

Nicolas


   
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 pwar
(@pwar)
New Member
Joined: 5 years ago
Posts: 2
Topic starter  

@admin5435

Thanks for the swift reply.  I guess I had figured that wheel lock was more of a binary thing - a wheel is either rotating or not.  But I guess there's a middle zone of under-rotating.

I'm basically keen to have the motor on coinciding with when you get the audio cue in-game.  It's the nature of my motors that any degree of spinning causes quite a pronounced vibration effect, so ramping it up from very early on doesn't really provide any useable tactile feedback because it's essentially on all the time under braking irrespective of wheel lock.

I'll have a go with the settings you mention.  A question about those parameters: what do they relate to?  For example is threshold the threshold of wheel-lock or braking force?  And same for min force: is that min force of wheel-lock, braking or force of motor?  All a bit confusing.  And what are the axes of the response filter curve?  Not sure what the x and y refer to.

This is my secondary set of pedals that I'm retrofitting.  I have some Fanatec clubsport v3's with the vibration effect built in and found them so easy to get going the way I described above.  So diving into all this parametric and response interface has been in comparison quite a learning curve!

Thanks again for the help.


   
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(@fleskebacon)
New Member
Joined: 4 years ago
Posts: 4
 

Sorry to be reviving an ancient thread, but I'm having some trouble configuring my brake pedal wheels lockup rumble for Dirt Rally 2.0. I have the motors connected to an Arduino with motor shield, and in other titles I seem to be able to configure it properly so that the pedal rumble activates in the correct situations.

 

But in DR2 it seems to only respond to the "trigger when brake pedal reaches %", and starts rumble at that point no matter if the wheels are locked up or not. Rest of the settings are default.


   
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