tobias_platen's blog

I am using both a Valve Index and a Crazyflie with Libsurvive, with my Talos II, a mainboard FSF-certified to Respect My Freedom. Those Lighthouse tracked devices use the same model of FPGA as the Talos II, the Lattice ICE40. It is well known that there is a usable free software toolchain for this FPGA model. Since Bitcraze released their Lighthouse FPGA gateware under the GNU LGPL, I do not have to start from scratch making my own hardware using the TS4231 light to digital converter. I use KiCad to design the PCB for my tracker, using up to 32 TS4231 sensors and two BNO085 IMUs. Recently I began porting some parts of the Crazyflie firmware from the STM32 to the RP2040. Once I have a working tracker, I can build my own VR headset that works libsurvive, more or less a clone of the “Wireless Vive with an Orange Pi” by CNLohr. This is not an April Fool’s RFC’s, it is known to work on the RK3399.