LED light colors based on temperature - Raspberry Pi 4

Development Boards Raspberry Pi
1

Hi,

I wish to modify LED light colors based on temperature and therefore I was thinking to use Raspberry Pi 4, DS18B20 Temperature Sensor and Lumenati 4-pack as shown in the link:

https://cdn.sparkfun.com/r/600-600/asse … i_bb_2.png

As I am newbie with Raspberry Pi 4, I have few questions that I will appreciate a reply:

  1. Can I share the 3V3 pin for the PCA9306 and the DS18B20 components?

  2. The Lumenati scheme is for Pi 3, are there any possible problems if I use Pi 4?

  3. Any limitations for selecting different GND pin for both the components?

Thanks.

2
  1. Can I share the 3V3 pin for the PCA9306 and the DS18B20 components?
Yes.
  1. The Lumenati scheme is for Pi 3, are there any possible problems if I use Pi 4?
Won't matter, the Pi 4 will still execute code for a Pi 3.
  1. Any limitations for selecting different GND pin for both the components?
Nope, all the grounds are connected together and all work the same.