Hi all,
Possibly a newb question here but endless amounts of googling and I can't find an answer. I have an externally powered arduino board which I want to plug into my laptop as and when to 'receive' variables from a processing sketch via rs232 and to then use these on the already running arduino sketch. Is this possible to do? I'm worried that by plugging the USB cable in, I will reset the code which I don't want to happen, likewise when I take it out will my variables stay there?
The idea is to have a laptop running some algorithms in processing (geoLocative / webscrapey / image analysis stuff) and the user with my arduino orb/device/thing comes and plugs in to download the current data via USB. The bit I'm struggling with is how to get the data from processing to my arduino and to ensure it is stored there.
Idiot question I'm sure but if anyone is aware of any problems this might entail please enlighten me 
Nick