I am trying to figure out how to make a circuit that works much like a stylus for capacitive touch screens such as on an iPhone.
Given it's going to be a simple experiment, I was thinking of using an Arduino as the controller.
I have watched several videos and articles regarding "Aurdino Triggering Touch Screen", but none of them work reliably.
A stylus on the other hand can trigger the screen reliably and from a distance.
EDIT: A Samsung stylus triggers a on-screen pointer from at least 2 cm distance, while the tip of the stylus is a button notifying the phone to do some action, such as painting.
So what I need for my final project is to put electronics inside of a small plastic box (1.5cm^3) and the cube need to be able to trigger a spot beneath itself on the screen at regular intervals.
Is this possible?
To clarify this is exactly what I am looking for:
Circuitry that is placed in a 1.5 cubic centimeter box that triggers a 5 millimeter diameter circle on the screen under the box causing a virtual finger-press.
Distance between screen and actual circuitry is aprox 1mm.