I have not followed your link now (sorry, internet here is slow at the moment), but the last time I checked Cree's numbers, they had not measured the leds on copper boards, and gave no numbers on the higher currents we like to run the leds at.
Sometimes leds perform better than the manufacturers let us know :-)
EDIT: I had time to look into the Cree tool just now, and they indeed only give numbers for the red XP-E2 up to 700mA. Looking at the tool, a bit odd is that the Vf that they give is a bit higher than what I measured over the led wires (at 500mA it is 0.17V higher). My current setting in these measurements is not more precise than 100mA but still then the numbers that I measure are low compared to the tool (I checked, I did nothing wrong here, my voltmeter is correct within 10 mV, and any set-up inaccuracy would only make the voltage higher, not lower).
nice, a red zoomie, you can become the new cat emperor 0:)
settling with my focus adjustable red laser pointer until i can get around to some new builds for now
Wow, I’ve been looking for how to make an amber zoomie, just like your red one.
Amber ought to work the same as the red — if an amber is available anywhere.
Oh, please …. pointers welcome any time.
Djozz, I love that AA-zoomie you show above. What’s the host and where did you get it?
(I can find what looks like that several places but nowhere that describes what’s inside)
I’d like to put an amber into a host using the stock driver (figured I’d blow up the LED if I tried that with most lights)
It is optically identical to a lot of 18650 zoomies, but with AA-size battery. The lens is a larger diameter than the sk68, so it throws a bit better, and IMO it is better looking too. The build quality is very decent.
(are you overdriving that red XP-E2 at 1.5A, or is the driver protecting the LED? getting hot? don’t know what driver is in it, obviously, I’ll get one and try)
The driver in this flashlight is a standard budget AA boost driver that goes sort of direct drive on 14500 li-ions. On li-ions the current is limited by resistances in the system, including on the driver board. 1.5A is ok for the XP-E2, as you can see in the graph above, I would like the led to be driven at 2A so I may swap the driver sometime, or put the led in another host (I have a C8 host doing nothing yet...)
I, er, accidentally de-domed it, while soldering the leads to it.
Fell right off. Guess I got the base too warm.
Oops.
Used it anyhow.
Result is a lovely amber zoomie, smooth flood, nice image of the emitter at zoom.
Now I want to try, I guess an XP-E2? Mouser has the colored Crees — XP-E, XP-E2, and XP-C
Hm. around $2 for XPEBAM-L1-R250-00901
around $5 for XPEAMB-L1-0000-00901
danged if I can tell the difference.
Same pattern for reds and other colors. Time to study more.
Ack.
Any source for amber and red XP-E2s already mounted on a good base?
Else, I’m going to have to learn how to do surface mounting.
The first order code you posted is for a Gen1 XP-E (XPEAMB), the second order code you posted is for a Gen2 (XPEBAM). Cree uses the letter B in their order codes to designate Gen2 emitters, I think that’s across all their lines.
I think not. intl-outdoor doesn’t even sell amber emitters.
I’m not aware of anyone selling amber emitters on good stars.
there’s one: discount code ‘dealsmachine’ and make sure to unselect insurance on checkout dealsmachine.com - Informationen zum Thema dealsmachine. (sorry for the distraction).
Ok, I found Oldlumens’ video on surface mounting a tiny LED, I guess I can do that.
Thanks for clarifying, I’ll get one or two XPEBAMs and Noctigons and follow your lead.