I am looking in incorporate the power controller and the dosing controller from the official guides.
Power:
learn.adafruit.com
Dosing:
https://learn.adafruit.com/reef-pi-guide-5-dosing-controller
These both require a few connections to GPIO pins (obviously) but there are 3 pins that BOTH require. I have read some pins can handle multiple things but I cannot seem to find WHICH pins can. I know SDA and SCL can but cannot find anything about the others.
The common pins between these projects appear to be 27,22, and 5. Can those pins support both the power controller and dosing pump circuits?
I'll also attach the pics of the circuits to save you the time of clicking the guides.
Power:
reef-pi Guide 2: Power Controller
This guide will walk through the build process of controlling AC equipment using an automated power strip (power controller). The power controller allows scheduled and on-demand control. Power controllers are simple and inexpensive to build and it acts as a foundational layer for temperature or...
Dosing:
https://learn.adafruit.com/reef-pi-guide-5-dosing-controller
These both require a few connections to GPIO pins (obviously) but there are 3 pins that BOTH require. I have read some pins can handle multiple things but I cannot seem to find WHICH pins can. I know SDA and SCL can but cannot find anything about the others.
The common pins between these projects appear to be 27,22, and 5. Can those pins support both the power controller and dosing pump circuits?
I'll also attach the pics of the circuits to save you the time of clicking the guides.


