Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

Generous! I think I know that, but since I can make my own illuminated tailboards I want someone else to win this :slight_smile:

4 leds,
size 0603
:beer:

smaller I think

1—- 4 leds
2—- size 0603 :wink:

Ok, that was easy,next time questions will be a little bit harder:)

Correct answer is 4 LEDs, 0603 size, so Sirius9 and alberto7 won 6€ coupon for Illuminated switches product category - congrats!

Please register on led4power.com if you don't have account, and send me your usermane/mail on PM.

I already send the PM

Thank you for doing this :slight_smile:

Thanks led4power, this are realy next level lighted switches :smiley:

led4power, I have ILC-1 and Convoy S2+. However it does not fit into tailcap. There is no thread left for a retaining ring:

Other side:

Transparent washer is just for protection during transport! ILC-1 should be installed without any washer.

That explains a lot. Thanks :slight_smile:

led4power, sorry to bother you again. I’ve noticed some annoying oscillation in brightness. It is visible only in 1.5% and 2% modes (checked for 7A and 9A configuration, with and without moonlight enabled). Measurements with multi meter shows oscillation between 135.3 and 136.4 mA (for 7A). Is my driver defective? Can I fix it somehow?

"Oscillation" between 135.3 and 136.4mA is pretty normal because it comes from thermal noise superimposed on useful signal(we're talking about 1-2uV of noise), the real question is how you can see 1mA fluctuation at 135mA current? Anyway,one way to reduce it is to increase signal level from shunt at a cost of increased driver internal resistance.LD-2 to LD-4 drivers have very low internal resistance because at that time there was demand for driver with DD-like resistance on high mode,which was because of high Vf snd generation CREE LEDs. It's possible to reduce that effect by 10times with shunt and one 0402 resistor change,at a cost of increasing driver's internal resistance from ~5mOhm to 14mOhm (still pretty low, difference would be noticeable only if you drive 2nd generation of CREEs close to max. current).

I’m using the driver with triple nichia D240. Those measurements (around 135mA) was taken with cheap multi meter (not high resolution oscilloscope), so maybe fluctuations are bigger and that’s why they’re visible. Anyway - I can live with that :wink:

Hmm, <1%, imho nice result.

Idea: switch that would glow blue when in off position and red when flashlight is turned on (or any other color combination) :smiley:

That is not possible with tailcap switch, because when switch is on, there is no voltage over switch.

Added big gold plated bronze springs:

Gold plated phosphor bronze spring 12x9x1mm

Bottom diameter is 9mm,so they can fit on quite many drivers, switch pcbs etc.

I will try to measure resistance soon, but I expect something like 5mOhm under realistic conditions (~30-40% compression).

Also added new ILC-0 listing with fixed default currents at 1€ lower price:

ILC-0 default currents 4.97€

You still can change current set resistor as you like. Default values save me some time for build, that's why price is lower.

Also, one note related to LD-x4 drivers listings: you can now choose do you want 1mA bleeding or not. If you don't plan to install illuminated tailcaps, it's

better to not have bleeder for two reasons: lower active state driver consumption (1.6mA vs 2.6mA), and 1mA lower sleep current (~40uA vs. ~1mA).

Did you have those springs made? They are about perfect dimension for most tail springs :slight_smile:

(if you had them specially made, that is seriously cool, and having had springs made myself, I’m curious what is the manufacturer. But I’m aware that that may be a trade secret of yours :slight_smile: )

Edit: what is the height of this spring after a couple of compressions?

They are not custom made. They get shorter by ~1mm after 10+ compressions.

Good find then :+1:
And they keep their length well too :slight_smile: