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Discussion Starter · #1 ·
Hi all,

I've taken a read of the Switch solutions thread (http://forums.mtbr.com/showthread.php?p=4084720) but I remain a little confused. rockymtnway (http://forums.mtbr.com/showpost.php?p=4099023&postcount=6) had the same idea as me but I couldn't find any follow-up.

Here is what I'm looking to do:

I'd like a two or three position push button switch so I could have High / Medium / Low / Off OR High / Low / Off. High would be set at 800ma.

I'll be running 2 x Cree XR-E R2 (WG) emitters in series. Battery will be a 7.4V 2400mah Li-Ion.

Switches
Looking at using this switch (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=522PB-ND) or this? (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=528PB-ND). I'd also consider a toggle type switch but I'd prefer to try and keep everything somewhat waterproof.

Driver
Looking at using this driver (http://www.dealextreme.com/details.dx/sku.3256). However, I'm not sure if I can accomplish what I need with this driver. I realize the 3023 could probably do it but I'm trying to top it out at 800ma.

Can anyone give me hints or direct me to a wiring diagram of how to wire this up? I'm sure I'll need some resistors in there somewhere but I'm not too knowledgeable in this area yet.

Thanks in advance for any suggestions!
 

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aka RossC
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936 Posts
I have a good wiring diagram saved in my bookmarks at home for a 3023 but am at work currently.. will link you when i get home.

You could still use a 1000ma 3023 with resistors to limit the current to 800ma however, it would just take a little bit of fine tuning.

It is still a toggle style switch however so water proofing isn't so good, although I am sure i saw a nice ruberised boot to protect it somewhere.
 

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131 Posts
I would recommend a AMC7135 driver for your setup. I like this one as it has only two modes, but you can buy those with 3, or five, or 20.
Connect one led in series with the driver input and the other led to the driver output. Works great and efficient.
You can get 350, 700 och 1050mA as maximum. Just desolder one of the 7153 chips on the board for 700, two for 350. Low is 15% of maximum.

Then you can use any on-off switch you want. The board has mode memory and starts in last used mode.
 
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