Discreet APA102 or SK9822?

Flashlight Modding and DIY Parts
1

hello

i’ve purchased some hi-watt RGB LED’s, similar to these:


https://www.ebay.com/itm/100W-100Watt-RGB-Red-Green-Blue-High-Power-LED-Light-Lamp-Panel-Chip-DIY/401361314623

i want to make an addressable string of 50 of these big guys, preferably using 4-wire protocol (with clock wire).

How? I don’t mind if it’s a chip or a whole module. Also don’t mind if it uses some other protocol— does not have to be a standard.

I cannot find a discreet APA102 or SK9822— those chips seem only to be available with an on-board LED.

Could any of these work?
https://www.ebay.com/itm/PCA9685-16-Channel-PWM-Servo-RGB-LED-Driver-I2C-12-Bit-For-Arduino-BS1/262847153393

https://www.ebay.com/itm/RGB-LED-Light-Modulator-Programmable-PWM-Controller-for-Arduino/362113940268

https://www.ebay.com/itm/PCA9685-16-Channel-PWM-Servo-RGB-LED-Driver-I2C-12-bit-Part-for-Arduino-Hot/382170803578

https://www.ebay.com/itm/9-channels-RGB-bi-color-LED-driver-w-256-level-PWM-TM1809-arduino-RGB-LED-strip/121039360751

thx

2

I really have no clue, but what driver are you considering for each LED?
Driver may limit your choices on what to do or how. DMX stage lighting controlers?

3

The P9813 looks like it can do the job for you.

I didn’t do a full analysis but in the worst case you could use it as a simple PWM generator.