Yes, but it’s 2 channels of 4. Not 2 channels of 2. At least that’s what it was supposed to be. You can see the picture of the board in the OP, or click the img in my last post (not sure why it isn’t showing).
Correct on that… things have been very rough as of lately for me with life issues, financial issues, stresses, & preparations to sell my house and sell off a lot of things to move to a different province, but i still will make time to work on this lantern project here with the team here to do what i can to make it a reality as much as i possibly can.
I think they should be able to get good parts. If not though, the effect would be a bit of change in brightness while changing tint:
With ideal parts, brightness should stay rock-steady while adjusting tint, like a flat board placed across two support beams.
With lower-quality parts, particularly with slower activation times, brightness would sag a bit at middle tints, like a cable strung between two telephone poles.
Given how visual perception of brightness works though, even the non-linear version would probably be a pretty subtle effect. And if it shows up in testing, perhaps the firmware could try to correct for it.
I'm finding the light manufacturers (Sofirn, Emisar, FireFlies, Amutorch) seem to be getting the good 7135's, but I can't seem to find them to buy stand alone. Usually it's the opposite case - go figure...
Id love a good source of 7135s. The ones recommended by Lexel from LCSC turned out to be the low quality ones, the raptor claw ones. For what ever reason Richard’s seem to be a good supply but aren’t bulk friendly. And they are out of stock (fast 350mA).
I can give my experience from my candle project. Having tried a few varieties the tint mixing firmware is more sensitive to poor 7135, as it stands now. with PWM values at the floor of 1 the poor 7135 do not turn the LEDs on. Setting the floor to say 5 and changing every other value below 5 would result in the light turning on at 5 then dimming and turning off before turning on again. The tint mixing is causing it to go somewhere below 5 even when it is running on one tint channel entirely.