Fanatec Emulator QR Adapter for Pro Mini V2 PCB by sabifa

Last crawled date: 3 years, 3 months ago

Fanatec's wheelbases won't enable any force feedback, unless you have a Fanatec steering wheel attached to it. This thing uses lshachar brilliant project to emulate a Fanatec Rim and thus enable FFB.
What you'll need:
Fanatec QR
Pro Mini V2
FTDI Adapter USB to TTL Programmer
PCB can be found here
upload Gerber.zip to a PCB service like JLCPCB and order them

6x M5x20mm countersunk screws (e.g. DIN 7991)
optional:
8 pin JST connector
2x M2.5 screws to secure the pcb to the 3D model
How To
Make sure that the solder bridge on the Pro Mini is set to 3.3V
uncomment following lines:
#define HAS_TM1637_DISPLAY - we are not using the TM1637 display module
#define HAS_ANALOG_DPAD - otherwise the funky switch is constantly pressed

Program the Pro Mini using the option ATmega328P (5V, 16 MHz)
Mark the cable coming from the QR which is 5V (image showing the pin arrangement from Fanatec QR)
Solder the cables onto the pcb. Make sure that the marked cable (5V) is aligned with the 5V PCB pin
You can either solder the wires coming from the Fanatec QR directly to the PCB (recommended) or use an 8 pin JST connector so you can plug the cables coming from the QR into it
I had connection problems using the JST connector as the cable did not stick in correctly all the time, so I just soldered the wires and everything worked fine afterwards.

Bend the cable so that it fits into the QR housing
Take the 3D printed QR adapter, put two M2.5 screws into each hole to secure the pcb
Make sure that the cable is not squeezed and use the six M5 screws to mount it to the Fanatec QR
Done!
Warning
If you ever connect the FTDI to the board while also having it connected to the wheelbase make sure to remove the VCC pin on the FTDI interface, otherwise it might damage your wheelbase because this will connect the 3.3V coming from the FTDI with the 3.3V of the wheelbase.
Downsides
In some rare cases my base reconnects if I connect the emulator to it. Nothing wild, just let it recalibrate and you're ready to race
More information can be found here