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How to use RF receiver to control a 5v fan?
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How to use RF receiver to control a 5v fan?

by tlan on Sun Nov 10, 2019 10:03 pm

Hi all,

I have an RF L4 Receiver, controlled by the remote button control.
When the power is a 3.7v lithium-ion battery, it was able to drive a single LED light, while the voltage across the LED is ~1.9V.

Now I want the remote control to drive a mini fan, with normal working voltage 5v. I was wondering how to make that happen.

The fan motor won't run when I tried it, which I think is due to the voltage being too low.

Please advise on how to achieve this, or is there another RF receiver I can use for higher voltage devices.

Thanks a lot.

tlan
 
Posts: 2
Joined: Fri Nov 08, 2019 9:50 pm

Re: How to use RF receiver to control a 5v fan?

by franklin97355 on Sun Nov 10, 2019 11:59 pm

Do you have 5 volts to run the fan? You could use an optoisolator to take the output of the receiver and convert it to 5 volts.

franklin97355
 
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Location: Lacomb, OR.

Re: How to use RF receiver to control a 5v fan?

by tlan on Mon Nov 11, 2019 12:03 am

The fan runs well when it's directly connected to the 3.7v battery, so probably doesn't necessarily need a 5v.
When you say optoisolator, is there a specific model you'd recommend?

Thanks.

tlan
 
Posts: 2
Joined: Fri Nov 08, 2019 9:50 pm

Please be positive and constructive with your questions and comments.