This is super nice, I didn’t see this version before 
any instructions how to make that switch, which board to order!
Hi I made this to my Eagle Eye X6. It has BLF A17DD driver. I used 470 Ohm bleeder resistor on driver side and 47 KOhm resistors on the ring led PCB’s bottom side for each pair of leds. And some blue 0805 leds from ebay. The PCB is this 5.1 version
Here you can see the place for the 3 resistors at the bottom:
The led board’s negative contact is wired to the switch leg which goes to directly to the battery spring:
The positive goes to the other leg of the switch.
The spring bypass is not necessary if you don’t make a high current setup as a triple led light and you can use your original switch board with spring and switch. Just leave the washer out from the top of the switch because the led ring board function as the washer too. And also replace the swicch boot with a translucent one. This board is good for 14mm diameter switch boots.
Thanks for the info ZozzV6, I just ordered 6 x 17mm High-Amp Switch PCB copy and 6 x PD68 Illuminated Switch - 16mm Rev5.1 copy, alredy have some tiny leds and SMD resistors as well as A17-DD drivers.
Now I wait
For pictures these may be ok as well? This is the last one I built, for an S2+:
I tend now to make the connection bewtween ring and switch-board short and stiff (filling the entire wires with solder), I fix the ring well in place like this so nothing will mangle when the assembly is screwed in place.
I have had issues with this as well. I solved it by super gluing the ring to the top flat parts of the switch (after I was done soldering it)
I’m considering making those vias big enough for 0.025” header pins now that I’m using them on the TripleStack
I got these tailswitches, after paying extra and some delay and confusion (and a wonderful firm explanation by OL in the seller forum about what belongs in a host)
I’d like to make this into an amber, rather than blue, emitter — if I can solder this small stuff.
Can’t promise anyone else that they’ll be able to get switches with the hosts described in this thread
Sweet, the board functioned as washer as well :+1:
Hey djozz, remind me where you get all these interesting colors?
What you have there is Manker’s version of the PCB, but functionally I think its identical to my Rev3 boards. You will need to find some 0805 LED’s, you will need an 0805 resistor somewhere around 500ohms for the driver, and between 1-20kohms for the tail. I recommend getting multiple values in that range so you can play with it to find a brightness you like. These are common parts, you can check the OP for links or just do an ebay search.
Or… after all your work to get one of these tailcap boards, you could toss it and order one of the newer, better pcb’s from Oshpark
Chuckle. All I expected was an ordinary switch that would fit the host.
I’m guessing they’re scraping the bottom of various parts barrels when filling those host orders.
Oh well. Given my shaky hands, I suspect I’ll ruin one or two, then be waiting and hoping RMM or someone else, finds reason to build driver-and-switch combinations for sale to modders at my stick-it-together level ….
Thanks for the info. This stuff is always fun to watch, more so the more it gets past my reach.
It was asked to me by PM too by someone . It was a 100x gree-to-blue mix very leisure tossed loose in a small grip-bag by ebay-seller ledbaron. But the listing is gone now, and it appears that cyan 0603 or 0805 leds can’t be found on ebay anymore (or anywhere else?). Green, blue and ice-blue are easily found though, i.e. at lebaron (german seller).
So far the most I have ever used is 3 LED’s. For my next one I think I will use all 6 pads. I just can’t decide if I want to mix red and blue, or blue and green, or red and yellow.
I’d suggest to build three in the above colors. 
Fwiw Kaidomain has several different sized translucent tail caps including 8, 10, 13.6, 14, and 16mm.
I am in a similar LED delima myself.
Firstly, has anyone ordered LED’s from digikey? Any recommendations?
I am thinking I will grab these in a few colors to start out with, they have the highest MCD rating for the price/size so I figure they should net more light at low currents as well.
Next is color, I am thinking I would focus on green or blue/green combo as they should be the brightest for the least amount of power used since our eveys are more sensitive to those colors. Or is red just too good looking to pass up?
On the newer boards the power is so infinitesimal, just go with what color you want. Having said that, you could look at it from the angle that reds and oranges have a lower Vf, so they need less power to be as bright as the greens 
I suppose so, I just tend to overthinks things to make sure I get the best possible setup, even on the little things.
Test it! Perceived brightness vs power draw at different input voltages
Oh I plan to, just like to know I have all the parts I would need ahead of time. I royally hate having to wait for parts in order to finish a project.
Then just get several values to start with.