I still have not sent an updated interest list. You can see the interest list anytime you like. Will likely send an updated list to DBSAR in the next couple days.
I sent an updated interest list to DBSAR today, so if you don’t like looking at the links above, I imagine in a day or two he will update the interest list in the first thread post.
I’m really hoping these are available during this seasons fall/early winter camping season! Summer camping is a no-go here. Too humid. Good luck sleeping in 85+ weather with 98% RH.
so finally added thermal viases, 1A and 1W is pretty much fine as it was, but if people want to go higher they need more cooling on the MOSFETs
also rearranged the common ground for the OPAs and MCU
Looking good! Any thoughts or ideas on what the maximum “factory” amp draw on high is set? assuming it will depend on the sense-resistor ohm value? Also the button LED still has ability to change or be programmed from TK’s UI?
I have to agree on this. Especially if it falls under the 39$ category.
4000k, over 90CRI, no color change, no need of powerbank. Just plain eyecandy lighting with longish runtime. One moonlight, one superlow, one low, one medium, one high. Nothing more, nothing less.
And I like this. I don’t need even charger, but IPx8
I can reflow leds easily. So I like 4000K, but can agree with any CCT.
T1 is not simple , not efficient, and not durable. I already have butch of such lamps.
It is worth investigate interest to simple version. And may be launch it after main project. This allows not to split the efforts, and second version would be born much faster.
The beauty of this UI is that you can have those modes, and I can have ramping. 3000K is mandatory for a lantern, and with temp changing we can have that and 5000K, and everything in between.
Yes, exactly. Especially since it’s pretty much already implemented.
That’s why the temp ramping is so wonderful, no need for LED swaps (unless you’re wrong and prefer cool white, lol).
That’s fine, but it’s not needed for most since a wide range of temps are covered. Those with the ability can, and those that can’t still have a good range. With the ramping, even with swapping the LED’s you get a more versatile light.
The Nichia E21A is the better choice. It has a similar CRI (R9080), a tint under the BBL or on it, is available with every conceiveable CCT (2000K-6500K) and is more powerful compared to the Optoslis (less LEDs required). Here are Maukkas tests. This would require the use of a pcb with a special insulation material that has a low thermal resistance like Clemence and led4power use (should not be a problem cost wise since we need to get a pcb made anyhow). It would have the added benefit that we can put the FET onto this pcb to improve its heatsinking substantially (like led4power does). In my eyes this is the most elegant design.
As djozz has already mentioned tint is more important than ever higher cri ratings. The E21 R9080 LEDs offer a great tint.
The Optisolis’ lower output / lower max amps can be fixed by using more of them. Spreading the emitting surface is not a problem for a lantern….quite the opposite in fact.
That said, I’m not voting for any emitter change, I’m fine with LH351* as well as E21 / Optisolis.