H2-C Boost Driver

Flashlight Modding and DIY Parts
21

I am thinking of using this driver in a 3-XPG setup on a 20mm triple board from KD (series wired).
Is it possible to add a remote low-power switch to this driver ?

22

A momentary switch for changing modes?

23

Yes, a momentary switch to change modes. Fine soldering is not a problem, I just need to know if this driver can be modded to work with an extra switch

24

It can be done, to do it right may be difficult though.

One user got it to work by just putting a NO momentary switch across pins 1 and 8 of the MCU, but I don’t advise that as you are shorting the input power for the MCU and op-amp, and could burn out the regulator over time.

I think the correct way to do it would be to cut the power trace that goes to pin 1 of the MCU, then insert a NC (normally closed) momentary switch between the 2.8V regulator and the MCU. Pressing the switch would then cut power to the MCU and change modes.

25

Hi, I have problem with H2-C, only has one mode, the lowest: [HELP] H2-C modes. Any ideas?

26

Hi friend

Do you solder the driver to the driver pillar?

You can check any short circuit of the driver.

Thank you

Ban