hi,
i'm using this kind of stuff :
http://www.technicalrp.fr/catalog/gi...c8bec114b9cabe
http://www.technicalrp.fr/catalog/gi...c-82_1941.html
http://www.technicalrp.fr/catalog/gi...c-82_1943.html
perhaps it's able to built... (transponders & sensors)
most important : there is a free software
here :
http://www.technicalrp.fr/telechargements.html
it's for mini-Z use but suitable with 1/10.
i'm buiding the bridge to place 5 sensors (my track is 2 meters large).
never lost a lap with mini-Z (working well!) and 1/1000sec sensitive.
bye!