I plan on making an ambilight project for my TV, using a ~4m 5V APA102 60leds/m LED strip, controlled by a Raspberry Pi. In order to power the LED strip, I bought a PSU rated 10A 5V, which in reality actually measures to ~5.54V. I know this shouldn't be a problem for the LED strip, which is supposed to endure a max of 6V.
The problem: I want to power the Raspberry Pi in parallel with the same PSU that will power the LEDs. However (although I couldn't find any official documentation) 5.5V may be too much for the RPi to handle and I'm afraid not to burn it.
I was thinking of putting a diode just before the RPi, which would drop the voltage to ~4.8V, but then this could be too little. I actually tried putting an SR1100 diode after the power supply to measure the resulting voltage, but it still is 5.5V. Could it be because there is no load?
- Would it really be a problem if I directly supply 5.54V to the Rpi?
- Would a diode solve problem and why I can't see a voltage drop when I measure it without a load?
- Is there a better solution to reliably power the RPi from the same PSU?