Raspberry Pi 3 with external 2.5 Seagate USB powered hard drive
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I am thinking about building a RetroPie setup to use in out new Mini Van. I am looking at using biggest Micro SD Card I can (not sure what size can use) to store my ROMs. Also wanted to know if I could use one of these Seagate external USB powered hard drives.
http://www.amazon.com/dp/B00TKFEE5S/ref=twister_B00TS6JL4S?_encoding=UTF8&psc=1
I asked Seagate and would told draws 500 mA. The 4tb draws it all.
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I have a couple 2.5" enclosures kicking around that can be externally powered as well as via the usb alone. The Pi3 seams quite power sensitive, I certainly wouldn't add a 500ma draw to it if there was another option. Being in the vehicle, where were you going to get your Pi power from?
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The van have few cig plugs and couple 100watt power plugs I can use.
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Excellent, so you should be able to separately power the drive. I have a 5.0v 3000ma power supply powering my Pi right now, that might work for you. If you get the standard 2500ma power supply and try and run the drive off of usb power you will most likely see issues.
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Not sure what power supply you mean. The stock one looks like 5v 2.5a.
So saying if get other one should be able to run drive from usb on pi?
Trying keep simple and small so easy for kids.
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Yep, the recommended power supply for the pi3 is a 5.v 2.5a. But there's not a lot of extra there, the pi3 is a hungry little thing. My concern is if you attach a USB device that's going to use 1/5 of the available power from a recommended power supply you'll have issues. The official power supply is 5.1v, that extra .1 seems to cover any voltage drop that may occur for whatever reason.
If you want simple get a 3a power supply and run your drive off the pi USB, you'll know if it's not going to work. Look for a rainbow colored square in the top right corner of the screen, that's the low voltage indicator.
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Not sure what you mean about looking for rainbow? That in RetroPie after it's booted?
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@rmilyard A rainbow colored square will appear in top right corner on the screen if a stronger power supply is needed.
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@Brigane new pi and 5v 3a power supply coming tomorrow.
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See post:
https://retropie.org.uk/forum/topic/1745/128gb-micro-sd-card-with-pi-3
I have more questions.
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