Individual Control Multiple LEDs and COB Strips

[paulhtc]

Hoping someone can help, I’m looking to design a circuit for a model in 2 parts. I’ve a proven setup using an esp32, aw9523 breakout board (I’m not precious about this and want a smaller IC design so could I just use the IC?) and mosfets but now I’m looking to design for PCB and make it smaller to fit the model.

Any help in recommending some led drivers to allow individual control including individual brightness with the below requirements?

I’m looking to use an esp32 for both to use espNow for connectivity with a 5v power supply.

Circuit 1
8x 3.3v static colour 20ma leds
1x WS2812b

Circuit 2
1x WS2812b
9x 3.3v static colour 20ma leds
3x 5v COB led (unsure on power consumption yet but around 30cm length each

I’ve no problem in using different chips for the 3.3v vs 5v leds and know the WS2812b will be easy enough to wire up. Just including for awareness.

Thanks in advance!

[gilshultz]

@paulhtc

WS2812b

Consider using logic-level FETs for power control; the WS2812b can be driven directly from a microprocessor pin. To translate the logic to 5V, use HCT gate as level shifter. Power it with 5V, it should trip at about 2V, as shown in the graph.