EagleEye X2R Mod and Discussion thread

I thought I had read that the Convoy S2+ short tube fits. Or is that only for the non-charging X2?

Ok, 18350 Tubes:

I have a blue tube sold by Banggood (US warehouse) for the S2+ and it fits and works perfectly on the X2R and the S2+.

I have a second blue tube, also sold by Banggood (CN warehouse) that also works on the S2+ but does not even thread into the X2R.

I have a black S2+ tube directly from Simon, it also does not thread into the X2R.

I now also have a black tube sold by Banggood (CN) as “Eagle eyes 18350” that I linked earlier in this thread. It threads in to the X2R perfectly but does not work correctly. I believe one end is not long enough to reach the contact shelf in the head. Also, the threads on this one are very very shallow, as in the ridges themselves are about half the height of those on the Convoy tubes.

pilotdog68, thank you very much for checking!

So actually it could be a roulette to buy proper tube…that’s a pity.

Yeah, it is a pity. Maybe we could convince EE themselves to make an 18350 tube. I’m sure it depends how much interest there is.

I won’t be playing roulette anymore myself though. I now have 4 18350 tubes and only 1 18350 battery. I wanted it mostly for the novelty, I don’t think I’d ever actually use it in short form.

I have more 18350 batteries than 18650. The 18350 format is much nicer to me because I don’t need long runtime.
With 18350 tube it would be one of the smallest tube flashlights with built-in charging, and probably the cheapest one. Perfect for a gift.

You’re right there. I personally just prefer the slimmer 14500 for a small size.

In any case I have messaged EE and told them there would be a lot of interest if they would make an 18350 tube themselves.

Is there a simple mod to get more amps with the stock driver?

Oh BTW here’s my mod if anyone wants to do a off-the-shelf driver swap.

I think chip stacking is possible, however these are not the common 350mA 7135 chips, they are much smaller.

Ok, I have the X2R board updated to be as close as possible to perfect (only a week late). If you order from Oshpark, be sure to get the thinner 0.8mm size. The large pad on the bottom is where the MicroUSB connector is on the charger board. You want to carefully solder them together for least resistance.

Here she is:

Parts list:
*all minor parts are 0805 sized
All values are pretty standard for BLF drivers
R1: 19.1k
R2: 4.7k
R3: 4.7ohm
C1: 10uf
OTC: 1uf
D1: Reverse-polarity Schottkey diode
FET: LFPAK33 sized, I used NXP PSMN2R4-30MLDX

Attiny13 or Attiny25 sized pads for the MCU.

Ordered. Thank you very much.

Hello pilotdog68,

Does the charger board still cut off power to the flashlight with the new driver while charging? or will it need to stay in ML mode during charging? Or did you add an off mode to the firmware?

Hey Guys,

Newbie here.

So i’ve seen this thread and instantly ordered an X2R, can’t what to do this mod myself.
So Oshspark seems to be some kind of platform where you can buy pcbs designed and shared by other people…cool didn’t knew that. Pilotgog ( :smiley: ) was so kind to share the components….so far so good, but what about the controller? Don’t i need some kind of firmware to run that driver?

Please help me out :slight_smile:

Awesome project, i just had crappy china-lights until now and even they were amazingly bright though of poor build quality.

Thanks guys

Yes, you’ll need to program the controller. Here i a guide for the Attiny13a. You will need just a minor change to flash the Attiny25 that you want for this build.

This is one of the better guides here on BLF, though it has been discussed many places: Guide: how to flash ATtiny13a based drivers (NANJG, QLITE, etc.) with custom firmware

Welcome!

Thanks !!

I added an off mode in the firmware. I used bistro, and changed the hidden modes (that you go backwards to get into) to be just battcheck and then ‘off’

Brilliant solution. Care to share the firmware?

To those interested in a 18350 tube for this light, I ordered a black convoy s2+ tube from mtnelectronics on 10/6 that is working perfectly. Anno and knurling are very close as well.

I recall people reported this in "what LEGOes" thread but nice you confirm it

I’d be happy to! the problem is I always see this at work and by the time I’m home I forget about it :person_facepalming:

Ha,
you just reminded of something I have to do for someone at work, and keep forgetting once I am home.
Seriously, Thanks.