Sold/Expired EX10 resistors for modding

kevinm · Oct 19, 2008

*Update*:
I got some 0.091 ohm and some .1 ohm resistors that can be used to replace the .15 ohm, making the EX10 40-60% brighter! The mod took 5 minutes, but you need a pretty good iron. Anyway, if you want to do the mod, I'll send you a resistor.

I'm lookin' for a couple of 0.1 Ohm 0805 resistors for modding my EX10. Anyone have a couple to spare?

Thanks,
Kevin

kevinm · Oct 22, 2008

Re: WTB 0.1 Ohm 0805 Resistor

Still lookin' bump!

jtr1962 · Oct 22, 2008

Re: WTB 0.1 Ohm 0805 Resistor

I have 1206s if they'll physically fit.

kevinm · Oct 24, 2008

Re: WTB 0.1 Ohm 0805 Resistor

Thank, you sir! But the solder pads are tiny. I think I need a direct replacement.

PonchoTA · Oct 24, 2008

Re: WTB 0.1 Ohm 0805 Resistor

Call up Mouser or Allied (or other such elex supply company) and ask them for a couple of samples. They'll usually send them out same day.

hth
Paul

kevinm · Oct 31, 2008

Re: WTB 0.1 Ohm 0805 Resistor

Found them! Also, I have some left over. Modding took about 5 min and now the LED is running at 950-1000mA! I have 9 left and 10 of the .1ohm ones, if anyone wants to try it themselves.

rocled · Oct 31, 2008

Is it something that anyone could mod, with little knowledge?

krazy89 · Oct 31, 2008

hey kevinm....

i wouldn't mind making that mod... sounds easy enough...

u have any pictures of which resistor it is? a guide maybe?

oh... and can u send me a resistor???

Thanks,
KraZy

kevinm · Oct 31, 2008

Yep, it's pretty easy as long as you are okay with looking at tiny things (it's a 0805 package; 1/10 the volume of a grain of rice) and have a soldering iron with a fine tip.

This thread has the info I used and a couple of pictures:

https://www.candlepowerforums.com/threads/202901&page=2

It's R6 on the circuit (the resistor marked R150 or R15) and is close to the edge. Krazy89 and rocled, send me pm's with resistor preference and address and I'll send you 1 or 2.

Oh, yeah, don't do this over carpet! :ohgeez:

rocled · Oct 31, 2008

Hello, PM sent. Thanks!!:wave:

rocled · Oct 31, 2008

Oh yeah, what would this do for the temp and overall runtime on high?

kevinm · Oct 31, 2008

Bad things:devil: It's going to get warm pretty fast. I'm running 750mAh batteries, so I'm guessing the runtime will be 30-45 minutes. I plan on checking the runtime later tonight, but have to go to class now.

olrac · Oct 31, 2008

I would like one:thumbsup:

wbp · Nov 1, 2008

I'd be interested in a 0.1 ohm. Do you have Mouser part numbers?
Thanks!
William

brighterisbetter · Nov 1, 2008

Wouldn't this also make the lowest setting a bit brighter too?

Beamhead · Nov 1, 2008

How hot does she run? And I would like a resistor if any are left.

kaichu dento · Nov 1, 2008

brighterisbetter said:
Wouldn't this also make the lowest setting a bit brighter too?

That was the first question that popped into my mind too. Great if it doesn't but it would be a bummer if the low setting got any higher.

kevinm · Nov 1, 2008

Yes, the low is slightly higher now (can't tell exactly how much). The light gets hot after 10 minutes. On high, it ran for 20 minutes on a Powerizer LiFePo, so about half as long as before. Makes sense; it's drawing about twice the current.

I still have a few resistors. If you want one, PM me your address and I'll send one your way.

Kevin

rocled · Nov 3, 2008

Hows the light holding up? Anymore testing done? Thanks for some more info.

kevinm · Nov 3, 2008

The light's holding up well; no problems at all. I need to find some 3.7V RCR123's and test that too...

I forgot to mention that the RCR123's I was using before were 450mAh, so the 20 minute runtime is very reasonable.

More to come!

Kevin

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Sold/Expired EX10 resistors for modding

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