GENERAL INFO Please do not copy any of my work to other web-sites without prior approval and give credit where it is due. Hello Guys, After a rather short wait, here is the new Bruteforce2 project log, based on the newly released IONI Drive, by Granite Devices. This log will be a work-in-progress WIP, and I will consistently update the first few posts in this thread, to keep the information easily accessible. This work is a direct copy of my worklog at iRacing, and after request I have decided to share it here too. Here are the links to the original Bruteforce Wheel project, based on the Argon drive, also by Granite Devices. (note these links are at iRacing and I will create a new Bruteforce1 Argon thread here too.) Part 1: http://members.iracing.com/jforum/posts/list/3282974.page Part 2: http://members.iracing.com/jforum/posts/list/3293316.page Credits: Bruteforce2 will be the first wheel based on the IONI drive, and whilst I had a direct interface to Granite Devices in guiding the development of the IONI drive, to suit our DIY DD FFB wheel needs, there are a few key-players that make this build possible: Tero Kontkanen (Granite Devices): For listening to our feedback and incorporating them into the final design: 1) IONI was originally planned as capable of driving ~8A Peak of Sine (POS), whist our minimal requirements called for ~13A POS. Due to this, the original 4x ‘PCI Express’ form factor was changed to 8x ‘PCIE Express’ 2) A simple 1x Cube motherboard to make the overall project affordable and easy to implement 3) Provision for an external MOSFET driver stage that will allow us to drive large motors without any concern. With this feature, the sky is literally the limit , as it would be simple to design boards that can drive 100A POS. For practical use, however, we will be looking at ~30A POS. Lenze, large MiGe and others will be no problem. 4) Further to point 3 above, the capability to run 2x IONI drives in parallel on a 4x Cube board, which will allow higher current to those not wanting an external MOSFET driver stage – this feature is currently untested though 5) Encoder connector pin compatibility with Argon, as well as a simplified connection to E-Stop and Drive Enable interlocks 6) PWM+DIR control based on Argon PWM+DIR principles – thank you to Bernhard and Michael for your efforts with this! 7) One Granite software interface compatible with both IONI and Argon, soon new DIY DD FFB specific functions – the first I am testing, which will allow us to adjust current/torque on the fly Michael MMos: For his HID USB Interface based on the STM32 Discovery Controller, and continuous efforts in developing the firmware, finetuning it all the time as well as adding new features. Thank you, without you, this would have not been easy. MMos (HID USB) Bernhard Berger: For your original Argon API interface, it was you that got me started on Argon some time ago. I am hoping that at some point in the future, API mode will be available on IONI too, as I know you have very exciting things in development with the API interface. Bernhard Berger - API Ben Darley, Phil Berry, Brett Stiles: For your continuous research into components and producing parts-lists that will make prospective DIY’ers life so much easier, Ben and Phil, and Bretto, for tweaking my hub-design to something special - you can tell I am not artistic, lols Late 2014 IONI discussions between Beano and Granite Devices – narrated DISCLAIMER 1: I accept no responsibility for anyone doing a project based on this information, I provide the following as a worklog of my endeavours and as information only. Should you decide to use this information for any purpose, the RISK IS ENTIRELY YOURS. In any such an event you want to use this information, please make use of certified and qualified electrical and mechanical engineers to support you. Also please note the legal implications wrt patents should you set out to gain commercially from this exercise! I provide this information with the full intent that this is for personal use only, no more, no less. DISCLAIMER 2 - SAFETY: Please keep in mind that the forces that the DIY DD FFB will generate is significantly higher than any available commercial FFB wheel, direct or otherwise driven. If you lose control during racing, or you have a wheel that behaves erratically, keep your hands away from it and rather hit the E-Stop or Drive Enable button. You have that wired, right? Also, note if you are using any USB cables connected to the wheel rim, secure it well! If there is a risk that the wheel might dislodge the cable, you don't want it near your face or eyes. Take precaution and rather wear safety goggles then when using this wheel. Safety first people.