hi,
http://playground.arduino.cc/Main/CapacitiveSensor
does this capsense method also work without a foil area? but only with a long copper wire (2mm diameter or so)?
for i project i would need to sense touch (or better very close proximity) with 6 meters of such wire.
a few weeks ago i did some experiments and it kind of worked.
today i tried to make it more reliable but i didn't get it to work at all anymore. maybe some grounding issue or something but i wasn't able to figure it out.
do you have any tips how to make this work? is this even feasible? would it be better to use insulated or non-insulated wire (so far i tried it with an insulated one)?
in the above link they talk about an antenna. is my wire such an antenna?
i would be happy about any responses.