i cut down the inner foam (usefuly the holes that the contact is made through are in lines) and contact foil to make a 4cm strip. then trimmed the PVC outer and resealed with duct tape. this i mounted onto a 7cm wide piece of thin board, and covered with a 17cm wide piece of floor vinyl. its a bit of a quick bodge as i just wanted to see if it would work, but early indications from rolling over it on my office floor are that it worked well. certainly it activated the trakmate on every occasion.
i'll make it a bit more solid now, add some antislip (router mat) to the base so it will grip the road, and give it a good go to see if it holds up.
the extra bonus is that within the one switch as supplied there is enough material to make 3 similar switches as this - all being well £1.33 ($2.40 - don't ask me in euros!) a switch.
