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1  Using Arduino / General Electronics / Control the speed of a 230VAC fan on: April 03, 2013, 09:01:44 am
I want to control the speed of a 230VAC fan motor like this:

I don’t really understand what circuits are appropiate for dimming lights and which ones are for motor speed (I don’t even know which circuits are for Synchronous or for Asynchronous motors)
I found several information about it on Google and I have found this options


Do you think this circuit is appropiate and could be adaptated to be controlled by arduino?


See the next schematich:;topic=91274.0;attach=14833
I saw the schematich in this post:,91274.15.html
In the post is said that this schematich could be adaptated to work with 230VA

Which option would be appropiate for a fan like that?

Thanks a lot
2  Topics / Home Automation and Networked Objects / Re: 20A CT Sensor on: November 22, 2012, 09:34:14 pm
Thanks again.
I calculated the burden resistor and the result was 177 Ohms resistance.
 - What resistor is better, 174 Ohms or 178 Ohms resistor?
 - Is it ok if I use a 10K resistor as a biasing voltage divider (Rvd) as is shown in the tutorial?
 - In this schematic ( there is a capacitor (C1). What's his value?

Thanks in advance
3  Topics / Home Automation and Networked Objects / Re: 20A CT Sensor on: November 22, 2012, 07:21:37 am
Thanks a lot!
I tried to calculate the proper burden resistor but i need to know the turns of the CT. How is possible to find it out?
4  Topics / Home Automation and Networked Objects / 20A CT Sensor on: November 19, 2012, 07:30:45 am
I just wanna know if it's possible to build an energy monitor like this one:

but not using the CT sensor used in that project, i want to use this one (cheaper):

thanks a lot!
5  Using Arduino / General Electronics / How to control a lamps intensity on: March 30, 2011, 07:12:14 pm
Hello everyone,

I'm novice on this and i'm researching on how to start with my Arduino Dicemilia.

I wanna control the luminous intensity of a lamp like you could do it turning the potenciometer button of a living room. I've been looking for an electronic gadged that allows Arduino to send an analogic signal output to this object, and after that this object would give the proper potency to the lamp, so the lamp would bright more or less.

Does somethink like that exist?

Thanks in advance.
6  International / Español / Como controlar la intensidad de una bombilla on: March 30, 2011, 06:56:10 pm
Saludos compañeros,

soy novato en esto y estoy investigando como dar mis primeros pasos con el Arduino Dicemilia.

Mi idea es poder controlar la intensidad lumínica de una bombilla o de cualquier aparto electrónico, de la misma manera que con un potenciómetro de rosca regulas la intensidad de luz de tu comedor.
No consigo encontrar el componente (como un potenciómetro de salida) al que se le tiene que dar la señal analógica para indicar-le la intensidad de la bombilla al que iría conectado.

Existe un relé con esas propiedades o algo que me sirva?

Gracias por adelandado.
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