I'm using a PixLite controller to run a bunch of pixel LED strips. Since I'm sticking to 5V I need to use multiple power supplies (PSUs) to "inject" extra power for the number of LEDs I'm running. However, as described here, if not wired correctly:
- Small variances in PSU output voltage can cause large currents to flow between PSUs.
- Common grounds can allow "ground noise" to feed back and affect the data signals from the Controller to the LED strips.
What is the correct way to wire this? (Or "best" way to avoid these two – and any other – problems.) Following is my guess: