I had a triple with individually addressable leds (same RGBW driver as Ouchyfoot used above but modified, and not using RGB leds, link) with one of the leds a Pro-Light PC-amber one at ~5.5 lumen. On holidays when camping, or otherwise away from home with the family, I have used it as a night light for my son because he is afraid in total dark, it runs for 11 hours per night. But I like using it as my EDC as well, so it bothered me that I could not use it when he is asleep. So tonight I made a new flashlight with this led especially as his night light. The requirements: a ~5 lumen setting, safe, reliable, good runtime. I used:
*a Convoy S3 host I had around for ages and never felt much love for,
*a ProLight PK2N PC-amber led,
*a BLF-A6 driver (the led has such a high voltage that direct drive on a 18650 it still draws well under 2A),
*and did 2 spring bypasses to at least get some light out of it on high setting (for my own pleasure, the night light mode is only 30mA).
Because of the high voltage of the led, mode 4,5,6 and seven have close to the same output, but mode 2 is a nice 3 lumen setting for night light use (mode 3 is 30 lumen, a bit too much). I run it on a protected NCR18650B for good runtime, the 30mA/3lumen night light mode runs for 110 hours, with the light being on all night for eleven hours, this means 10 nights on a battery. The highest setting is 1.13A/190lumen.
edit: I pimped the light a bit with a red tail cap and a red o-ring, and I must admit that despite it being a Convoy S3 it looks alright now:
