Introduction: 230V AC PWM Dimmer Controlled by Arduino, Raspberry Pi

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Cheap, easy, galvanic isolated and powerful 230VAC dimmer controlled by PWM output from Arduino, Raspberry Pi etc.

Step 1: How Does It Work

Buy cheap AC dimmer on eBay, which is controllable by manual adjustable resistor. http://www.ebay.com/itm/4000W-AC-220V-SCR-Voltage-...

Connect parallel to manual adjustable resistor photoresistor, place photoresistor to dark box together with LED.

Control LED light by PWM output.

Step 2: What Do You Need

Step 3: Schema