I am a beginner, and I have a school project that requires me to use Arduino or any other microcontroller to control an LED light.
After some research, I found out that not all LEDs support dimming, and I would need to buy LED and a LED driver that supports TRIAC in order to make dimming works.
I found a tutorial online that uses Adruino and TRIAC to dim the lights bulb, but I am told that it wouldn't work with AC LED as the circuit in the tutorial is deisgned for resistive loads only. Link to the tutorial: http://m.instructables.com/id/Arduino-controlled-light-dimmer-The-circuit/
Is there anyway that I can modify the circuit in the tutorial to make dimming works with an AC LED? Perhaps attach a LED driver that supports TRIAC to the PCB, then connect the LED to the driver? Or do you suggest me do it using another method?
Best Answer
If you select a "dimmable" LED bulb, it should work with your TRIAC circuit. Standard dimmer switches are generally TRIAC-based. In fact, it should work better as many dimmer switches Require a minimum wattage as they pull power from the circuit. Your's should work with even a minimum wattage bulb.