Reef pi how to have lights come on and go off without dimming

CarissaT · Nov 16, 2019

Hi I’m running reef pi on my freshwater tank and I just want the lights to come on full blast and then turn off. I would have thought the diurnal setting would do this but it’s still dimming the lights prior to turning them off. The mosfets I have make a horrible high pitched squeal when dimming lights so I just want a timer for on or off. Any way to do this in the software?

Ranjib · Nov 16, 2019

CarissaT said:
Hi I’m running reef pi on my freshwater tank and I just want the lights to come on full blast and then turn off. I would have thought the diurnal setting would do this but it’s still dimming the lights prior to turning them off. The mosfets I have make a horrible high pitched squeal when dimming lights so I just want a timer for on or off. Any way to do this in the software?

Why dim at all? Remove the mosfet and and all dimming circuit if possible and just control the power outlet with timer. If that’s not past let then keep the dimming circuit but use a time to actually turn on/off power when the intensity is 100%

CarissaT · Nov 17, 2019

I have two sets of lights I want controlled independently and they are on one power supply. So an old fashioned timer won’t work.

Ranjib · Nov 17, 2019

CarissaT said:
I have two sets of lights I want controlled independently and they are on one power supply. So an old fashioned timer won’t work.

L293d , the dosing circuit ic , is capable of doing something like this. It should allow you to switch on/off those two channels independently as regular timers. Check out the adafruit blog on how they work, happy to answer specific question if you can share the current circuit