This will only work with a random fire optocoupler: NOT igniting at zerocrossing is the principle of this dimmer. Switching an AC load with an Arduino is rather simpel: either a mechanical relay or a solid state relay with an optically isolated Triac. Over years ago, I published a simpel TRIAC AC dimmer for the arduino. Yet in spite of the simplicity of the circuit the software needed was a bit complicated as it needed to keep track of the zero crossing of the AC signal, then keep track of the time and then finally open the TRIAC.

Dimmer Library for Arduino.

This is an Arduino software library to control AC loads using triacs and a zero cross detector circuit. The library methods can be used to control the AC load power for multiple triacs independently, using a single shared zero-cross circuit. Hi Blynkers, I wanted to share with you this little project.

Measuring with a 100W bulb, the voltage across a 230V mains supply is just 2. Note: This circuit should not be used to control inductive loads. Control light intensity of 220V AC lamp over Bluetooth using Arduino and RoboRemo app Disclaimer. AC dimmer using IGBT transistor chopping the sine wave according to PWM output from Arduino.

I have discover two ways so that to dimm a incadence 230V bulb using Arduino. Both uses a triac but the main difference is how arduino should understand the zero cross detection of AC. This method is called AC phase control. It is the method used in many light dimmer and heater and motor power control . One method of controlling power to AC circuits uses a TRIAC to turn the power on and off at precisely timed intervals that are synchronized with the AC signal. When I start to interest in MySensors and started to connect wires, I was thinking that I want to control my AC bulb remotely.

With Arduino , we can made control with potentiometer (like in shops) or with push buttons. I use 100W incandescent bulb at . On-board micro-controller. I made several changes to code which i felt was necessary including changing usage of timer as you can see below. Almost years ago, I published a simpel TRIAC AC dimmer for the arduino.

It becomes a bit more tricky if one wants to dim a mains AC lamp with an arduino : just limiting the current through a Triac is not really possible due to the . FREE ARDUINO codes for ARDUINO and RASPBERRY boards. Compatible with any ARDUINO , RASPBERRY boards. How to connect AC Control Module to ARDUINO UNO board Arduino code for ATMEGA328P microcontrollers (MICRO, NANO, UNO Boards)-here.

So I think there were (was?) two issues. Pin change interrupts on the Attinyare triggered on rising and falling edges which I think was causing the flickering.