I am working on a project that involves a Raspberry Pi 3B+ and multiple sensors (temp/humid DHT22, pH probe and EC probe from atlas scientific, cameras....).
I am trying to figure out how to power my sensors using an external power supply as I faced many issues with the Pi, with it shutting down whenever I run my python scripts for a while. I tried to narrow down the problem and found that it wasn't necessarily a software issue that I am aware of so the only logical explanation is a power supply issue. That is why I started to outsource the power supply away from the Pi for a bunch of sensors. Now I have found this helpful but I do have a question to make sure I got this right and I don't screw my system up: Power multiple sensors with external power source
- What does Mohamad mean when he says to connect the GND from the Pi directly to the Negative line of the barrel jack? I understand that the sensors need to have a common GND but couldn't I just connect the sensors to the external VCC (barrel Jack) and the GND to the Pi directly?