Dimmer sensor

[mainali]

Can this dimmer sketch be used to control the speed of a fan ? If yes then what are the changes I need to do to this sketch. As part of a project I am working on, I intend to control a AC 230V fan using arduino. I was planning to create a sketch which explicitly controls a AC FAN.
By doing this am I reinventing the wheel or someone has done this already which I can use.

[jeylites]

@mainali http://forum.mysensors.org/topic/647/mysensored-230v-motion-sensor-with-light-level/6

[mainali]

I have the dimmer circuit with me already. I am looking for the sketch to integrate this with the sensor and send message to the gateway using MQTT for controlling the speed of the fan.

Note: I am using a custom controller build using Ruby on Rails(WIP). and ruby-mqtt to send message to the MQTT gateway which is running mysensor code.

[jeylites]

@mainali I don't think I have what you're looking for :( ...

[korttoma]

Would this be of any help? ->

https://codebender.cc/sketch:44734

[mainali]

I have kind of implemented the fan control with a new message type V_FAN, but anyways I will check this out and revert after testing

[mainali]

Can the dimmer led actuator example be used to dim a AC 60w incandescent bulb connected 220v connection. If yes what are the modification needed.

when it comes to controlling the speed of a FAN or dimming a normal tungsten filament bulb. I have found so many answers but not a single one which explains all.

[korttoma]

All the dimmer examples does is to change the level on an PWM output according to a 0-100% dimmer slider in the controller. What you connect to the PWM output is up to you. In the example sensor device I posted I have connected a transistor that controls the speed of a 12VDC fan.

I have also maid another sensor that shows as a dimmer in the controller but in the arduino it controls 3 relays instead ( there are not so many rules you have to follow here you can create what you need, that's the beauty of MySensors ).

[ferpando]

@mainali
Dimming AC current is far more complex than dimming DC from the hardware perpective.
Do a search on the internet about it and come back with a solution that fits your needs.

[korttoma]

This post is deleted!

[jeylites]

@mainali

This circuit might help with what you are doing. See attached. Try building this circuit and connect "signal & ground" to dimmer LED actuator PWM. Again I can't stress enough be careful with AC power!!!