[Question] Potentiometer wheels

[Pheggas]

Hello. Can this be used for low-resolution output wheels like the ones based on potentiometers?

They're working on basic principle. You have potentiometer which twistable end is attached to your wheel. So when you turn the weel, the resistance in potentiometer changes. This signal goes into controller and from there, via USB, the signal is passed to the PC to control steering in game.

The big downside of this type of wheels is accuracy. They have 256 values. This changes as you turn the wheel. But when you're driving in game with low need of steering (e.g. Euro Truck Simulator) so you need turn just a little bit, there's big chance of getting wheel into position between two values (e.g. 129 and 130) and in this moment, the steering wheel (in-game) just dancing like crazy because it can't decide to which value it want to go.

Exactly due this issue i found this interesing github project which basically smooths out the output from steering wheel. But the only question from me is if this is working on this type of steering wheels as well??

PS: As wheel example, you can look for Speedlink Drift OZ

[Luke460]

Hello and thank you for your question.
I'm sorry, but this program can only be used for steering wheels with FFB, as it can only act on this parameter. The purpose of the program is in fact to modify and correct - according to the user's needs - the activation and the force developed by the FFB engines. You need a different program for your needs and I don't know how to help you.
Consider switching to a steering wheel equipped with FFB, it will drastically change your feelings in the simulator!

[Pheggas]

Alright. No problem. For people which will land on this issue, I'll post here alternative for smoothening these kind of wheels. Basically, they need to make their own controller for all these buttons and analog inputs. Read more FreeJoy's github page. I already ordered blue pill development board with programmer and very excited to set everything up. I'm also very curious about on what depends potentiometer resolution - different points of resistance, respectively.

[Luke460]

Great, I leave the issue open in order to help who has your type of steering wheel.
Greetings and good races!

[SimGearEvolution]

The potentiometer is not the problem in your case, your wheel is only reporting a 8 bit number or 255 positions in usb hid. You need to increase that depending on what ADC you are using. Most microcontrollers have a inbuilt 10bit ADC or 1024 positions which you can use or you can get an external ads 1015 for 12bit and ads 1115 for 15bit resolution.