LED strip remote without relay?

[warmaniac]

Hi ,

I want to help make led strip remote powered trought 3x AAA batteries , which can I turn on/off remotely without relay (it consumes lot of power). I think when it works on 5V battery(3xAA) it may be powered trought arduino , or any ideas ?

Led strip here

http://www.ebay.com/itm/282380579023?_trksid=p2057872.m2749.l2648&var=581508983496&ssPageName=STRK%3AMEBIDX%3AIT

[mfalkvidd]

@warmaniac Adafruit has a great guide on powering leds.

But you will probably not be able to have this project battery-powered. Keeping the radio in listening mode consumes too much power, and if the radio is in sleep mode it can't receive commands.

The MySensors SmartSleep functionality might be useful if you can tolerate trading slow response time for better battery life.

[warmaniac]

@mfalkvidd

Thanks for reply and interest, but question is : Do I need use Solid state relay or classic relay or how can I switch light on/off ? Thanks

[mfalkvidd]

@warmaniac you cant turn it on and off regardless of what you use, since keeping the radio in listen mode will drain the batteries.

[warmaniac]

@mfalkvidd

And what about 433 mhz way like RFlink as usb gateway ? Will it drain less ?

[mfalkvidd]

@warmaniac unfortunately not. The datasheets have the exact numbers, but both nrf and rfm draw more than 10mA in listen mode.

[mfalkvidd]

The easiest way to control the leds, if we disregard the radio power problem, is a mosfet. See https://www.mysensors.org/build/dimmer for how to build one, but that solution would need to be combined with SmartSleep or some other method for getting the change to the node without draining the battery.

[Mena]

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