Software to measure slotcar times

1. Hardware Version 1
Parallelport - not used anymore

2. Hardware Version 2
Based on VUSB https://www.obdev.at/products/vusb/index.html
libusb is required + udev rules needs to be created:

place 
SUBSYSTEM=="usb", ACTION=="add", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="05dc", GROUP="users"
in /etc/udev/rules.d/60-objdev.rules
and reload udev 
# udevadm control --reload
if thats not working -> check 
$ udevadm monitor --env
to solve the problem

3. Hardware Version 3
Based on STM32F07
user need to be in group uucp

required packages (watch CMakeLists): boost, asio, fmt 
to build:
$ mkdir build && cd build
$ cmake ../rennbahnc
$ make .