We’re working on to make a reference design of acrylic enclosure for a SimuCUBE system. The box will fit all necessary force feedback system electronics, including a 320 W power supply. In our tests 320 W was fully sufficient for a 20 Nm wheel and well usable also with higher torque systems with power draw limit of IONI.
Work in progress acrylic case for SimuCUBE system. Design by Aki Korhonen.
I’m happy to reveal the details of the upcoming force feedback controller – SimuCUBE! The hardware design is now complete for prototyping and we will get prototypes in the lab in the next month. SimuCUBE has a STM32F4 microcontroller that is compatible to a popular STM32F4 Discovery board. The plan is to start an open source firmware project for this board.
SimuCUBE will change the way simulators are built. Click to enlarge.
The decision to build a racing simulator with servo motor based force feedback has yielded first tangible results. The picture below shows the current setup of a force feedback wheel with a 36 Nm (peak) motor equipped with a sin/cos encoder. The system is being driven by IONI Pro HC and a STM32 Discovery based interface.
Simulator direct drive FFB wheel is operational but currently it lacks other controls. Mechanical parts design and tooling was implemented by Aki.
The first test drive on iRacing put a wide smile on our faces immediately and gave more motivation to make faster progress on it :)
The plan is to experiment with wheel effect calculations, such as friction, inertia, damping and spring, inside the drive firmware to take full advantage of high resolution feedback devices. Also it’s a good platform to test how far IONI can be pushed in output current ratings in this kind of system.
Now it’s official – as hobby project I’m going to build a servo motor based force feedback wheel to be used with racing simulation! As side project I’ll be thinking of how to make drives even better suited for this task.
This is all I’ve got now. Haven’t decided yet whether I’ll be using IONI or ARGON with the motor.
As I’m not throughly familiar with all the details, the first thing in is to gather information to get me started. If you wish to help, please share some useful FFB related links in the comments!