Hi, does anyone have experience with H17A driver from KD nor similar problem with me? I have a problem with the bleeder resistor value, which causing the memory mode didn’t work.
I tried from 220 until 1.36K Ohm for the bleeder, and 300, 330, 15K, 22K Ohm for the led resistor (they’re stock lighted tailcap from convoy & astrolux). None of the setup that I made make the memory mode back.
For reference, no bleeder and 300 or 330 Ohm led resistor sometimes work, but no longer after that the flashlight/emitter won’t turn on. And sometimes make the emitter and tail led blinking themself.
I usually start with the switch LEDs. Figure out how bright you want the lighted tailcap by trying different resistors. And I found that different drivers may require different resistors for similar brightness.
Once you determined the brightness, then see how the driver behaves. Usually the issue is that the flashlight has next memory mode, which should be resolved with a bleeder resistor. I would start with a low resistor, like 220 ohms, and then increase until the driver works well. But some drivers will continue to have issues regardless of the bleeder resistor.
Thanks for the input NeutralFan! But after trying so many times with different value, I gave up on that. Even now without the bleeder resistor and non lighted switch, the memory mode has gone. Lol
Been a while guys… Had the itch to build something after a FEW years.
illuminated Tailcap for an Eagle Eye X7
Some low current 0805 in 3Sand orange and these only needed 222 resistor to make the 2 pairs of 3 look Just Right.
No idea where I got them, sorry.
Think its the PD68 5.3 board
Never did put a bleed resistor in the X7 driver. Fet+1 Bistro. I need to trim the nipple inside the silicone button to make sure that is not causing some click speed issues first. Trimmed 2mm already… needs more.
hello. this is my first post on this forum. i dont sign up for forums, typically a lurker. ive read quite a bit but still very new to electronics in general. flashlights are teaching me a lot for sure. i need some help with my tailswitch (led switch from simon for s2+/c8+, etc.) i popped it in and at first was bright then flickered to dim and is staying dim. for my s2+ and c8+. theyre both using the same drivers. qlite rev.a 87135 from richard. on the c8 driver it is now a 127135 and the s2+ which i have not done anything to yet (until i finish the c8) is a 10*7135. not sure if LEDs matter but s2 is the triple build with nichia 219c and c8 is single led thrower with xpl hi. ive noticed other posts talking about 221 resistor and saw the pic as well. the tailswitch really lights up well in the c8+ now and i love it but now i dont have modes. seems like its stuck at 100% or whatever mode i was in last before i made the change. i unfortuneatly do not have a multimeter yet to test anything with so im just tinkering untill something works. looking at this picture again it seems like that resistor is possibly getting a connection at the other peg to the left. would that cause this? i know this post is old so im not expecting much but any help is appreciated, thank you
yes i did that. and it did increase my tailswitch brightness but at the cost of only having flashlight on at 100% when activated. the driver worked perfectly fine without the resistor, my issue was the tailswitch light is just too dim. it actually flickered to regular brightness for a moment then went back to dim when i put it in at first before i started this resistor thing. that happened with just about all my lights that operate off the qlite rev.a driver. there is nothin wrong with the lights. they all work normally with the regular tailswitch. im wondering, would ptting a resistor on the tailswitch side do what i want it to do? just make the tail light brighter? or thatll probably work but drain too much battery i assume
Oh, I don’t know too much about those. But the lighted tail switch has a resistor, right? If you want the switch light brighter then I would think stacking or swapping that resistor would be the way to go.
so im actually an idiot. i automatically assumed the flashlight wouldnt come out of 100% mode. i think it was factory reset when i added the resistor becausei tried entering programming and it worked out. now my problem is no memory which i believe someone else had similar issues on what im working with so ill have to read into that. i believe you are correct about the 221 resistor in it being too low. im scrapping old electronics over here so as soon as i come across something in the range of 5-700 or so i am going to try it out. i am eye balling my battery too to see what the drain is like. i have also since swapped out the resistor from the location it is in and put between the spring and star number 1. its a better spot.