Relates to powering USB devices from the Raspberry Pi
0
votes
1answer
86 views
Raspberry Pi USB power from 5V S-ATA
I have a 3.5" HDD enclosure with external power supply. Inside I have a 2.5" HDD and there is space in there for the RPi. The problem is I don't want to have two power supplies so I was thinking to ...
0
votes
1answer
80 views
Can the keyboard draw too much power and damage my pi?
I've been using a small lightweight keyboard, fearful that I would damage my pi if I used a higher voltage one, and was wondering if I should be glad I was so fearful or if I can safely invest in a ...
1
vote
1answer
126 views
Serial versus USB connection for RFID reader
I'm a university student attempting to make a wall-mounted RFID reader using a Raspberry Pi device and a Parallax RFID reader. I'm still in the process of planning and ordering the components, and ...
3
votes
2answers
455 views
External power for USB HDD
I want to plug my 2.5 USB external hard drive to the Raspberry Pi, however, there is not enough power on the USB ports for it to work. I've had some problems with a cheap USB AC-powered hub from eBay ...
2
votes
2answers
196 views
How can I cut power coming out of the Pi's USB ports?
I have a simple device connected to the Raspberry Pi, a small USB fan. The problem is that the fan does not have a on/off switch so I must unplug the fan every time I want it to stop.
My question is: ...
2
votes
1answer
116 views
Can I power two Raspberry Pis from one Powered Hub?
I have this hub: Mod My Pi 4 Port USB Hub, which is recommended for use with the Raspberry.
I have two Raspberries but one Hub. My Question is:
Can I power both Raspberries at the same time, without ...
3
votes
1answer
505 views
How much energy does the raspberry pi consume in a day?
My searching efforts have failed when trying to find this. On average, how much energy does the raspberry pi consume in 24 hours ( minimal usage vs max usage in a day AND usb vs micro usb powered)?
2
votes
0answers
110 views
Pi - Detecting hdmi out or power interrupted
Does anyone know of a way to script this?
The idea being that using raspbmc / hdmi to TV / Tv USB to Pi mini USB (with a battery for buffer)...
You could have your Pi running off the tv's usb. When ...
2
votes
1answer
377 views
3G Dongle / USB Device Appears and Disappears
I have a 3G dongle plugged into my Pi. Running lsusb only occasionally shows the device occasionally in the list. When I tail /var/log/messages I see the following:
Feb 7 17:09:07 raspberrypi ...
3
votes
4answers
429 views
Powered hubs, backfeeding and safety
I've got my RPi set up as a media centre, running Raspbmc, using a powered hub to run a bunch of peripherals including terabyte external HD and a hacked-together IR remote.
All very nice, but it's ...
4
votes
1answer
150 views
Power issues with 2 external hard drives connected
I'm using the B model pi which has two usb ports. I originally had 1 1TB external usb hard drive connected to it and then tried to add another 1TB drive and it seemed like that one would not power ...
1
vote
3answers
1k views
High Power USB Power Hub
I currently have four raspberry pi's connected via ethernet to each other. They are currently powered by four 1A power adapters which works fine. But I was wondering if there are any devices out there ...
7
votes
2answers
1k views
Powering Raspberry Pi and other USB devices through a single USB Hub
I bought a powered 7-port USB Hub, which has 7 downstream ports, 1 up stream port and one power port.
My question is can I connect both Raspberry Pi and the USB devices that I want to use with ...
2
votes
2answers
717 views
one power supply for raspberry pi and external HDD
I have my Pi and a USB powered external hard disk. I am looking for a way just to have one plug for the both of them. At the moment my Kindle Charger doesn't have adequate power to power them both.
...
1
vote
2answers
1k views
DIY External Powered USB hub not working
I have put together a DIY External Powered USB Hub by following the instructions. (Instructables, htc-linux)
USB hub with 4 ports
5v 2A AC/DC power supply (It varies when tested with multimeter, ...
