A single Type C port would be sufficient. With USB Power Delivery standard, that single port can be used as both input and output.
For the long term, removal or Type A slot shouldnβt hurt anyone. For a short term - many people would have to use $0.40 adapters
This may or may not be cheaper to produce than dual port. Personally Iβd prefer the PD way, but I guess that could make some people unhappy.
I wouldnβt include a charge cable at all. Doesnβt everyone have a collection of cables thatβs tailored to their needs?
OTOH, perfect CRI does not always give the most vivid colors. Sometimes wide-spectrum can make colors pop more than high CRI. Getting the mixture right can be tricky though⦠and if done wrong, it looks bad.
I havenβt done a 3000K + 5000K mix yet in a flashlight, so I donβt know how it looks. Itβll be interesting to find out. Two 3000K and two 5000K bulbs works really well for bathroom lighting though, and makes it much easier to discern subtle shades while applying makeup.
Ditto this. My EDC for the past ~1.5 years has been a mixed tint XP-G3 based triple. It uses a 90cri 5700k, 90cri 3000k and a 5000k with a forgotten CRI.
I keep trying other LEDβs and setups but just can not get anything that can match the tint and color in the real world to the human eye.
The only other LED that comes close is the 9080 219B but it gives up too much output but it does look a little better.
Tint mixing 2700K with 5000K, as I think is planned for the lantern, does not get you as far below the BBL as the 2700K/6500K example in the graph from Yuji and the Zanflare T1, and the CRI will therefore not be that far off either.
I would have loved to test an array of 3000k and 5000k Samsung LEDs, but I havenβt actually ordered LH351Ds 2700-3000k to see how the tint mix would work at full power.
The problem is that I only have 3000k LH351Bs and 4000k LH351Ds, and mixing them together would not be too smart since their forward voltage is different.
Also, Iβd like to add that we need a quality manufacturer for the USB cable. 20-22AWG power is necessary at 12FT/4M. At that length, we need as little Vdrop as possible.