Home › Evil Mad Scientist Forums › Other kit and product support › Question about triggering Art Controller by RTC alarm before purchassing it › Re: Question about triggering Art Controller by RTC alarm before purchassing it
July 7, 2014 at 3:27 pm #21928
The Art Controller requires an incoming logic-low signal to trigger it. The DS3231 does have an alarm output, and it looks to me as though its output is an “active low” type that would be appropriate for triggering the Art Controller (so long as you use a pull-up resistor, as described in the datasheet).
To power on an Arduino with the Art Controller, you can either use the same 9V DC power supply that you use to power the Art Controller, or a different one. The simplest method would probably be to use the same power supply. Connect the + 9 V line both to the (+ side of the) Art Controller power supply input and to the “Common” port of its relay. Connect the ground line both to the Arduino’s ground and to the (- side of the) Art Controller power supply input. Add another wire from the “NO” port of the relay to the +9V input of the Arduino.