O.K. Probably the last and ultimate Lume1 inspired, TPS63020 buck-boost, Anduril, 3V LED driver for this nice & budged friendly headlamp.
Driver can output 12W with full (4.2V) and 6W with completely depleted (2.6V) battery. Acceptable PWM . All mode stabilization . Eficiency up to 93%. Have reverse polarity and thermal protections. 1 or 2 color aux led support. Lowest mode could be lower , but its fine.
Its the most advanced and balanced driver i ever made . Mission accomplished.
PCB:
Thanks for your answer!
I was hoping a more simple solution ,maybe buying a few replacements from aliexpress.
Nope ,no internet provider ,the username it’s from an satellite chanel package https://en.kingofsat.net/pack-viasat.php .
Best Regards!
That ‘O’ ring is Buna Nitrile and can be spliced with Cyano-Acrylic (CA) glue. The CA melts into the neoprene and can be as good as the original – not used as elastic but a seal. When gluing be quick and precise, there isn’t any time to move the ends into place. Any excess I remove with a very sharp X-acto knife, sometimes I use a razor blade as more precise.
There is an American supplier of all sorts of ‘O’ rings The O Ring Store – if shipping is reasonable.
Since im not big fan off Anduril ’s smooth ramping and linear stepping mode, compiled new UI similar to Olight Baton and more balanced for headlamp output. Now testing with buck-boost TPS63020 driver…
For perfection, as you can notice, lowest mode can be dimmer and it have some lite PWM visible on camera only. But i have long winter ahead for improvements. ;))
I’m a big fan of the Anduril modes. Olight UI can be pretty good, but only if the mode spacing is perfect. What I like about Anduril is you can pick your # of modes yourself, and where they start and end, and imo the spacing always ends up perfect.
Yes, its all about spacing. At least in Anduril 1 stepped mode spacing is linear. It dividing steps for ramp length equally. But for headlamp (and not only) is more important to have modes in low range … like 4 modes from 0.5ma to 500ma. and hi at 1000ma. And of course separated turbo like 2-3amps for short time or as long as possible.