What can be driven by 1xaa? (want to mod an Elly)

[ExZeRoEx]

I have an elly lying around and I was wondering what I could mod it with. I am completely new to this. For example, I was wondering what would happen if I were to try to power a Q bin Cree with only 1 AA?

 

[leeleefocus]

I'e not tried this with a cree but i have tried it with luxeon's and some other LED's and they did nothing. You could try and get one of RV7's driver boards. I have heard alot of good things about these and have a couple in my possesion but i am getting the parts together for a head torch but have not had the chance to power up with the board in place yet. These driver boards coupled with a Q bin cree are supposed to be crazy bright.

 

[yellow]

an Elly?

How about desoldering cheap Star, getting the screws out, mounting Cree/Seoul/Rebel Star, soldering it in?

No need for another driver
PS: without driver nothing will happen with a led from a single cell

 

[Gunner12]

The Elly already has a Driver to raise the 1.5v to the 3+ v of an operating white LED. If you wire a Q Bin Cree to the driver and turn the light on, it will light up. Any LED under 4v operation voltage should work.

 

[gadget_lover]

Swapping an energizer lithium 1AA will allow the stock board to pull higher current. I have an elly modded with a P4 and it does quite nicely for a 1 watt light. ( it pulls .85 amps at ~ 1.5 volts and I fudge by estimating 80% efficiency)

It's brighter than my S bin lux III at 3 watts.

Daniel

 

[datiLED]

An Elly can drive a Seoul with impressive results. I tried it with a CREE P3 when they first became available, and it was brighter, but the tint of that particular LED and the typical CREE ringiness made me switch to a Seoul LED. It was very nice for an inexpensive light.

 

[Scattergun]

A made one with an RV7-board and a Q5... impressive when driven on Nimh high capacity cells, not so impressive on alkalines...
I guess it touched the 150-Lumen mark on Elite1700 Nimh´s