Hi, I was wondering if someone could help me interpret the instructions to wire up the following Opto-Isolated Relay (http://arduino-direct.com/sunshop/index.php?l=product_detail&p=156
NOTES: If you want complete optical isolation, connect "Vcc" to Arduino +5 volts but do NOT connect Arduino Ground. Remove the Vcc to JD-Vcc jumper. Connect a separate +5 supply to "JD-Vcc" and board Gnd. This will supply power to the transistor drivers and relay coils.
So I understand the first part I connect 5v to the device. The second part has me confused though. I have a 5V wallwart so I connect the +5 to JD-VCC does that mean I connect the neutral off the wallwart to board ground? Or do I just ground that pin to the case?
I'm just a beginner as you can tell so go easy on me if it's a silly question