I would like to create a Motion Sensor LED Light. What would be the best board to use that is the least power consumptuous? I would like for the battery to last as long as possible.
An ATtiny can run for ages on a 3V button cell.
Never heard of it. Is this what you are referring to: link?
Never heard of it
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A "simple" motion sensor light doesn't need a microcontroller and in fact most motion sensor lights don't have microcontrollers.
For example, an [u]NE555[/u] could hold the light on for some period of time after triggering (without any software).
Any good tutorials on this that you can recommend?
Tutorials on a 555?
Nah.
Too niche.
Too recent.
droidus:
I would like to create a Motion Sensor LED Light.
You don't need a Arduino for that. Just a PIR sensor, a LED and a battery (3*AA).
Connect the LED between PIR output and ground (no resistor).
If you want a brighter light, use a small transistor to increase LED current.
Adjust the 'time' pot on the PIR for the time you want the LED to be 'on' after movement has stopped.
Solder an LDR under the dome (there are two holes for that), and your light only turns on when it's dark.
Leo..
droidus:
Never heard of it. Is this what you are referring to: link?
That's one option but I was more thinking of a plain IC. No development board around it - you want low power battery use, then you have to go for a barebones system. Just the microprocessor with minimal external components.
Of course having the PIR sensor do all the work is even easier.