Hi. I just got my raspberry pi 2 a few weeks ago and I'm having trouble finding the best power supply for it. I've tested a few I acquired over the years along with a few other miscellaneous ports.
Below are the various results I've come up with when the USB drive is plugged in. max_usb_current=1 is enabled.
1 - Generic 5V 2A adaptor (Red light blinks on pi, hard drive light stays solid then starts to blink. No sound is heard from drive. Drive is not recognized.)
2 - LG 5.1V 0.7A adaptor (Pi shuts down completely. Drive is not recognized.)
3 - Kyocera 5V 0.8A adaptor (Red light blinks on pi, hard drive lights starts to blink, beeping sound is heard from drive. Drive is not recognized.)
4 - Generic 4.5v-6.5V 0.7A adaptor (No red light on pi, hard drive light stays solid then starts to blink. No sound is heard from drive. Drive is not recognized.)
5 - Plugged into Sanyo TV V/A = ? (No red light on pi, hard drive light blinks momentarily then mounts. Connection to drive is not stable and disconnects after a few minutes or immediately after trying to access it.)
6 - Plugged into computer's USB port V/A = ? (No red light on pi, hard drive light blinks momentarily then mounts. Connection is stable and reliable.)
Yes, I know that last one would work but I thought I'd list it anyway. 4 and 5 seem to be the most interesting to me.
