I’m trying to get a custom Android application (working on the "Security tab" Packard Bell ", android 3.2) for controlling an external engine. There is no need for subtle control, just a way to signal" on "and" off ". Which port on the device can I use for how to get this output and how to configure it? The ability to just turn on or off the power on a USB device would be ideal, but I read the answer to another question on this site that told me that this is not possible with Android.
I thought about just playing the sound on the headphone jack, and then building a relay that will respond to this current.
For those who are wondering about the reason, the tablet will be used to train the blue-and-gold macaw (huge parrot). The tablet will be installed in her cell (securely, but so that she can use her language on the screen) with a program specially written for training and connecting to the automatic feeder. I need a simple way to control this dispenser, which will also be customizable, possibly with a small DC motor.
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