So while I wait for my printer to arrive I figured I would get the RPi and the relay working. And had some questions after reading this and watching some youtube videos.
Concerning hooking the pi to the relay he says:
- connect JD-VDD to one of the 5V pins on the Pi
- connect VDD to 3.3V (these two power the relays)
The 6-pin-header is to be connected as follows:
- connect GND to Ground (surprise ;D)
- connect VCC to the other 5V pin
- connect IN1-IN4 to the remaining pins
Question Are:
1. He refers to plugging some 6 port header into the remaining pins, really we just need VCC to 5v, Ground to ground, and one GPIO pin going to one of the 4 relays right? No clue what 6 pin header he is talking about. I think he is using just pin 18
2. Why pull the jumper and power those other two pins separately?