Help: Exposure Redeye Hack

[james24575]

Guys, Gals

i'm looking to power this Exposure Redeye without purchasing the main unit. The Rear light draws it power from the main light but the cost of that is in the £100s. My main bar lights are two Fenix L2D's.


Redeye

http://www.exposurelights.com/products/redeye/index.php

Main unit

http://www.exposurelights.com/products/enduro_maxx_2_-_2009/index.php


Sorry not a light tech but would love some help.

 

[herulach]

If you want a handily prepacked version, you could get a piggyback battery (£40 ) and smart charger (cant see a price on their website)

Otherwise, I'm pretty certain they use a single LiOn cell, so 18650 or 3 AAs should do it.

 

[james24575]

If you want a handily prepacked version, you could get a piggyback battery (£40 ) and smart charger (cant see a price on their website)

Otherwise, I'm pretty certain they use a single LiOn cell, so 18650 or 3 AAs should do it.

Cheers that helps alot.

 

[gadget_lover]

It should be easy to do if you have a way to measure the outyput of the main unit. The LED itself will take around 3.5 volts, but we do not know what other circuitry is inside the housing.


Daniel

 

[NovaNath]

It should be easy to do if you have a way to measure the outyput of the main unit. The LED itself will take around 3.5 volts, but we do not know what other circuitry is inside the housing.


Daniel

I don't think they have any circuitry.. the control comes from the main unit. So you'd need some sort of regulator as well as the cells.

 

[peter-d-w]

It's a while since you posted this but I am thinking along the same lines - to power an Exposure Redeye or White eye without buying the main unit. Both the Redeye and the White eye utilise a Seoul P4 emitter but do not contain a driver. I am thinking that the DX flashlight kit /sku.15687 and the driver board /sku.7612 might be a good place to start. The driver board is 17mm whilst the flashlight kit is designed to take a 16mm board so would this be easy to modify? I am envisaging replacing the glass lens with a circular piece of plastic drilled to accept a cable leading to the remote emitter. I am not sure if any other components would be required.
Doing it this way would be much cheaper than buying a main unit from Exposure (£160) and would allow me to carry backup charged 18650 batteries with me for longer cycle rides instead of having to invest in the very expensive (£40) Exposure piggyback battery.
I have no experience of building or modding flashlights however so am wondering if there is a step by step guide somewhere which would help. The DC power plug used on the Exposure Lights seems to be non standard and I cannot find a source of supply for plugs or sockets. I may have to cut off the existing plugs on the Redeye/White Eye to replace them with something easier to source unless anyone knows where I can find them.

 

[herulach]

It's a while since you posted this but I am thinking along the same lines - to power an Exposure Redeye or White eye without buying the main unit. Both the Redeye and the White eye utilise a Seoul P4 emitter but do not contain a driver. I am thinking that the DX flashlight kit /sku.15687 and the driver board /sku.7612 might be a good place to start. The driver board is 17mm whilst the flashlight kit is designed to take a 16mm board so would this be easy to modify? I am envisaging replacing the glass lens with a circular piece of plastic drilled to accept a cable leading to the remote emitter. I am not sure if any other components would be required.
Doing it this way would be much cheaper than buying a main unit from Exposure (£160) and would allow me to carry backup charged 18650 batteries with me for longer cycle rides instead of having to invest in the very expensive (£40) Exposure piggyback battery.
I have no experience of building or modding flashlights however so am wondering if there is a step by step guide somewhere which would help. The DC power plug used on the Exposure Lights seems to be non standard and I cannot find a source of supply for plugs or sockets. I may have to cut off the existing plugs on the Redeye/White Eye to replace them with something easier to source unless anyone knows where I can find them.

I suspect there is a driver in there, I wouldn't have thought they'd leave it DD, especially seen as they need to put something in there to do the flashing anyway. What you really need is someone with an exposure kit to measure the Vout and solve the problem once and for all!

 

[peter-d-w]

The driver is in the main unit. The Redeye & White eye are designed to run from the power out socket on the main units only, therefore they do not have a driver built in.

 

[peter-d-w]

The components arrived today from DX and it works very well after assembly. I am now able to drive the White Eye (or a Red Eye of course)using the modified Flashlight kit and can carry a spare charged 18650 battery to give me longer running times than an Exposure main unit would have. I have extended the leads from the driver board through the lens (which I am going to replace with a piece of plastic cut to size), to a 2.1mm trailing socket. I replaced the 1.7mm DC plug on the White Eye with a 2.1mm DC plug as I was unable to find a source of supply for a 1.7mm trailing socket. I could have driven the White Eye using an Exposure Piggy Back Battery but that would have meant driving the P4 LED in Drect Drive and it would have been 2 mode only. Using the DX kit has cost much less and the end result is much more versatile as it has more modes and has replaceable batteries.

 

[Goldigger]

Pete,
A bit of an old thread now, but can you post some pics of what you did please?
How does the red eye come apart?
How much room is in there?

Im thinking of squeezing in 3 xpg's..on one of these lux rc circuit boards

with a 20mm tripple lens..

Or i might just get two and put one XPG in each.. for the helmet..