First post!
I would like to create a user interface that opens and closes analog outputs. The purpose is to allow a quick user interface to turning things on and off on an aquarium.
analog outputs would be wired to:
In the past I have made these using simple switches, though something graphical would be more fun!
The aquarium has a controller with web interface, though for quick operations a standalone interface is preferred.
specs:
- minimum 4.3" screen, prefer 7"
- two sets of 6 outputs - each would share a single ground reference from the aquarium output box, and when closed will create continuity to the output
- touch screen interface
I'm new and in the reading phase, all help is appreciated!
touch screen
- 4D looks nice, but pricey (Arduino Display Module - 4.3" Touchscreen LCD - LCD-11740 - SparkFun Electronics)
- is it cheaper to go to a used phone or tablet and serve via bluetooth or wifi?
outputs
do I need to use relays or can I use Triacs? is there an easier way?
Is there a shield available for 12 or more outputs? I haven't found one.
thanks!