Hi there - this may be a totally stupid idea that highlights my complete ignorance, but having read a previous Arduino article on triggering a touchscreen it would suggest that grounding a plate/penny/contact on a captive touchscreen would mimic a finger press. http://forum.arduino.cc/index.php?topic=157859.0
My question is, do you think this could be achieved by using the floating ground off the mobile phone itself? e.g. if a wire was connected to a penny, and the other to the ground pin of the devices USB socket, would connecting the 2 trigger the screen, or more likely brick my phone :D
Basically I am looking for the simplest way for me to use a joystick trigger to click an area of the screen, and am wondering if would sticking the trigger's in/out contacts between the penny and ground do the job.
Many thanks in advance