2021 Oct 31, 01:31 AM
@astrogerard
Hello Gerard
Received my order of (5) pcf8574 modules today.
Songhe PCF8574 PCF8574T IO Expansion Board I/O Expander I2C Evaluation Develop Module (5pcs)
https://www.amazon.com/dp/B07XD2K4GH
Sorry in advance for the NOOB questions.
Was wondering how to connect them to my 3B+
I understand that the Pi has two I2C connection pins.
Furthermore how do I avoid pulling too much power over those pins and causing damage to the 3B+?
I have read that some have killed their Pi because of that even though the modules were powered by an external source.
How do I mount the PCF8574s? There are no mounting holes and I can’t imagine letting them dangle in the air.
Thank you for your time and assistance.
Hello Gerard
Received my order of (5) pcf8574 modules today.
Songhe PCF8574 PCF8574T IO Expansion Board I/O Expander I2C Evaluation Develop Module (5pcs)
https://www.amazon.com/dp/B07XD2K4GH
Sorry in advance for the NOOB questions.
Was wondering how to connect them to my 3B+
I understand that the Pi has two I2C connection pins.
Furthermore how do I avoid pulling too much power over those pins and causing damage to the 3B+?
I have read that some have killed their Pi because of that even though the modules were powered by an external source.
How do I mount the PCF8574s? There are no mounting holes and I can’t imagine letting them dangle in the air.
Thank you for your time and assistance.