I'm running 14 ~3W (700mA) LEDs in series on a constant current LED Driver that handles between 36-65V output. The driver runs the LEDs at 600mA.
The heatsinks I've attached are pretty small, and if I put my fingers on one, it heats up in about 2 minutes or so, and then takes about 20 seconds to get cold again.
I'd like to use an Arduino to turn on and off the circuit, for roughly these periods.
I wrote a basic sketch to handle the Arduino part to keep a relay on for this period...
s_l = millis() % 120000; on = (s_l < 100000) ; digitalWrite(relayPin, on);
I have relay modules, and transistors lying around... but I'm not sure how well they will play with a constant current circuit. The LEDs don't care if I am PWM'ing, but maybe the driver will get some weird feedback loop if I mess with it?
I'd prefer to use transistors, because the relays clicking will probably drive me crazy - but I will take any solution. What is my best option?
Just a relay on the AC side? I'd prefer not to work with AC, as it is a lot more dangerous.
Thanks in advance...