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Topic: Multiple cooling fan control (Read 2 times) previous topic - next topic

LJ_Blake

Hello all!

I have recently bought an Arduino uno to help me complete my final year project at university. I am looking to use it in an art installation to control multiple fans, (in a dimmer switch manner), in various places in my degree show space. I am a complete beginnner and have not yet managed to get that far. I was wondering how feasible my idea is and how I begin to go about programming it? If anyone has any recommendations for sites with relevant programming codes that would be amazing. Do I need to buy a servo motor?

Many many thanks, LJ_Blake.

MarkT

We need to know more about the fan motors... Voltage power and motor type.
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LJ_Blake

Thanks Mark. I am still at a stage of playing with different fans, so am not sure of the motor type, But I would not want them to be any less powerful than a standard 16" oscillating fan which power at approx 45-50w and generally a remote voltage of 220v (sometimes 240). I am hoping to power at least three fans, (obviously from the mains), how feasible is this?!

MarkT

These common mains powered fans use synchronous motors which are not amenable to easy speed control alas...  They are highly inductive so standard light-dimmer modules won't work with them.  They usually come with 3 switchable speeds that work by switching several windings on and off.   See if you can locate ones with continuously variable speed built-in...
[ I won't respond to messages, use the forum please ]

mowcius

I replied to your other thread - please don't multi-post in future.

Quote
See if you can locate ones with continuously variable speed built-in...

+1

The standard '3 speed' or single speed fans are not going to be easy to control the speeds of with an arduino.

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