The methods for powering the Raspberry Pi (typically via its micro-USB connection.)

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824 views

Why do people use powered usb hubs?

I have the RPi B+. It has four usb ports. At the moment I am powering an Arduino Mega, a small RFID reader and a keyboard. I plan to also power a wifi dongle and an arduino uno. Will this just work? ...
0
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2answers
31 views

Using a Generic Switching Power Supply

I have a generic 5V 10A switching power supply with screw terminals, that looks kind-of like this: Is it safe to use the output from here to drive the Pi by cutting a USB cable and connecting the ...
0
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1answer
42 views

Preventing SD card corruption in the event of power failure

I have a project that uses Pi's in remote locations (roadside cabinets dotted around a city next to important bits of water infrastructure) to read data via USB from some specialised data collection ...
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2answers
31 views

Mult-head micro-usb cable

I am building a raspberry pi cluster. I am looking for a multi-head micro-usb power cable to power them. Does such a beast exist? Or can I make one myself?
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2answers
36 views

Is it fine to use an ASUS Memo Pad power supply on a B+ RPi?

I'm about to make my first RPi purchase (a B+) to be specific. I do not want to spend any more than I need to, and hence have looked around to see what power supplies I have that may already work with ...
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1answer
26 views

powering a RPI with its circuit from one wallsocket

I want to power a RaspberryPi with 54 LEDs (24 white, 24 warm white, 6 RGB - probably all at 20mA or something like that) from one wall socket. I'm planning to use the Pi to control the LEDs via ...
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0answers
36 views

Ethernet not working when powered over GPIO

I'm powering my RPi (rev 2, model B) through GPIO pins - same connection like here - using it ethernet is not working, though the ethernet works fine when powered through the microUSB port. The ...
3
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3answers
50 views

Powering a 3-12V water pump on raspberry pi

I've got a 3-12V water pump, a raspberry pi, a relay (5V 10A/120VAC, and a breadboard power supply supply 3V-5V. The questions are : Is it possible, to rspi to breadboard power supply usb, and a ...
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1answer
65 views

Minimal setup to output 30V through GPIO

I have a bell that works with a coil and when I put 30V (or more) on the coil the bell rings once. So now I want to be able to control that bell using my Raspi. I have a USB Charger for powering my ...
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0answers
51 views

WIFI dongle extension cable problems

I recently tried inserting a 5M USB extension cable in between my WIFI dongle and my PI, which didn't work, so I removed immediately; but the PI still wouldn't connect following a reboot for ages. ...
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2answers
57 views

The 'ACT' LED is not blinking and the CPU is overheating.

So i was working on a project in which I had to use an ADC. I used WiringPi's Python modules to do so. For testing the ADC, I attached a 100k pot to its input pin, supplied it about 20V but used the ...
2
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0answers
95 views

powering pi with a 5v regulated power supply

I am considering the following 5v regulated ps module. I have a coinacceptor that connects to a board. I am going to cut the coin acceptors 12v cable and put the -ve and +ve behind the regulated ...
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1answer
63 views

How to connect the connect to a PiHUB?

I just got my PiHUB but there are no instructions on how to use it :( I need: To connect it to 3 USB devices, The USB devices need to be controlled by 1 Rpi, That Rpi would (preferably) be powered ...
2
votes
1answer
62 views

housing and temperature

Im creating a cute wooden box for my pi as XBMC + webServer. As I want the system to stop using energy when switched off I included the 5v 1a transformer in the case, and put the switch between the ...
0
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1answer
59 views

Are there USB powered speakers with an Analog port?

I have built a raspberry Pi Jukebox, specially modified for a handicapped user (voice feedback on all songs, large buttons) but I have one.... last.... problem. The speakers I used ran off the analog ...
0
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1answer
226 views

Looking for 3G USB Dongle (with low-power consumption )

0 down vote favorite I'm developing for my #iot project with a device, a Raspberry PI, positioned in places without any internet connectivity. So I'm looking for a really cheap internet connectivity ...
2
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1answer
74 views

Felt current on my Pi, could this have damaged it?

Here is what happened. I have a Belkin Surge Protector. I have connected my iPhone charger (5v 1A) to this and it powers my Pi. I have also connected powered USB hub, transcend hub3k to this surge ...
2
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4answers
72 views

Will my Pi will be fine if I use those el cheapo chinese power adapters? [duplicate]

Title says all. does these cheap power adapters can harm my Pi anyway? and also, lets say these things stop providing less than what required (less than 5v and less than 0.7A), what will happen to my ...
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0answers
81 views

My Pi getting heated for no reason. How do I debug?

I wrote the Wheezy image, booted with rPi, expanded size, rebooted. Then I played couple of games, Python Games. Then I opened the default browser, however it was slow. I only opened two pages, one ...
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2answers
158 views

Is there any point to a 2.0A (or greater) power supply, given the 1.1A polyfuse?

My question: it's my understanding, based on the official Raspberry Pi FAQ, the wiki, and numerous forum threads on Stackexchange and elsewhere, that the Raspberry Pi has a 1.1A polyfuse on the ...
2
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1answer
103 views

RPI is rebooting every time I plug in the wireless device?

I encounter a very annoying problem with My Raspberry Pi which is rebooting whenever I plug into it a Wireless USB adapter or an ethernet adapter.
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2answers
137 views

Safest way to power a hungry Wifi adapter and the Pi from a single 5V source

My Pi is destined for the skies, so it will receive power at roundabout 5.3V via the BEC (battery eliminator circuit) which will be capable of delivering up to 10A (heavy duty BEC it is), so sourcing ...
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1answer
38 views

Make Pi poweroff secure?

I made a little device that solves a specific task. It gets turned on and off by powering it up and down. Now I had a corrupted file system for the first time. That's why I'm thinking about a strategy ...
4
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1answer
1k views

Is SD card corruption still an issue? [closed]

For a project I'm using a 16GB class 10 Sandisk micro SD card (in an Adafruit micro SD card adaptor). I've got a Model B Raspberry Pi that's not overclocked, nor has it ever been. Since I'm running it ...
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1answer
554 views

Hard drive not detected by the Pi

My raspberry pi is unable to detect my external hard drive, I'm wondering if I might have messed up in my setup. The hub is connected to the pi in two ways: from the hub to the pi's microusb to give ...
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2answers
414 views

Trying to connect a Raspberry Pi and Water Pump with one power source

I am trying to find a way to split one power supply between a raspberry pi and a water pump. This is pretty much exactly what I want to do. http://arpi.valtio.org/files/2013/10/IMG_0891.jpg Notice ...
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2answers
2k views

What to know about powered USB hub?

I'm a bit lost in electricity stuff, but I want an USB hub to power supply my Raspberry Pi and my hard drive. I know that there are lists of USB hubs for Raspberry Pi that works perfectly, but I want ...
0
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1answer
144 views

mix power and data for usb HDD

I have a raspberry pi being powered by a cellphone charger (1A) I try to connect and HDD but the power is not enough. I donĀ“t have a powered USB hub BUT i do have other power supplies. So I tried ...
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4answers
154 views

Alternative ways of attaching power to a RPi

I found a nice metal case to house a Raspberry Pi for a project. It has near-perfect dimensions and properties, but it lacks space to attach a power supply via Micro USB. I think the main USB ports ...
2
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1answer
105 views

Robust power supply, powerdown and industry housing

We like to use the rpi for an industry application (process monitoring). Our requirements are: power supply from 24-48 volt powerdown mechanism to protect data from an outage (safe automatic ...
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0answers
77 views

Raspberry power supply via PoE (power over ethernet) [duplicate]

is it possible to supply a raspberry pi via PoE? if not - why :D ? kindly
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2answers
108 views

Wiring a home to power Raspberry Pis

I'm considering putting a Raspberry Pi in every room of the house. One issue is whether it is inefficient to have a separate USB power supply running off the mains in every room. How would one go ...
0
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1answer
117 views

Power off the “bad way” [duplicate]

My RPi will be used at home (as a Wifi radio unit), without any screen / keyboard / mouse, etc. So very often, me, wife or kids will turn it off by just unplugging the power unit. Will this be a ...
0
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2answers
807 views

Raspberry Pi restarts after connecting 2TB WD My Passport

When I connect my 2TB WD My Passport external USB 3.0 hard drive, Raspberry Pi reboots and fdisk -l does not list the hard drive. I think so there is some problem with my power adaptor, what should ...
3
votes
1answer
411 views

Using a Raspberry Pi to manage a bank of several hard drives

I am looking to use a Raspberry Pi as a home file server. I have several hard drives, a Raspberry Pi, an unused computer case, and files that I need to store. I would like to mount all of my hard ...
2
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2answers
316 views

Powering Pi and 3.5" HDD from one PSU

I am trying to build a mini computer that contains a Raspberry Pi and a 3.5" HDD, with built-in PSU so it requires only a single 120v input. I'm thinking about a PSU like the MeanWell PD-25A, which ...
0
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3answers
189 views

Power Supply With UBEC

I am currently working on a Wifi controlled remote car powered by Li-po batteries. Can I use a 5V 3A UBEC as power supply for the Raspberry Pi to provide steady 5V and power all devices( 2 IR sensors ...
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2answers
301 views

Shutdown properly when power-supply can't supply anymore

I've been through tags "power-supply" and "power" of this website and surfing on a lot more but I did not found any answers or information about the subject I'm about to talk about. So, I'm looking ...
2
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2answers
219 views

Where is my RPi losing power?

I've tried 5 different chargers, and none of them gets TP1>TP2 over 4.6 volts. I just plugged in a new charger (found here) which gives it 4.4 volts with only SD card attached, but 4.8 with SD card ...
0
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0answers
118 views

RPi shutting down after powered from 5V pin

My RPi is working fine and automatically connecting to wifi when powered from USB but when I try to power it from a regulated 5V supply on the extension headers I can see that it goes on but then ...
2
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2answers
351 views

Power Management System for Raspberry Pi

I am working on a concept idea at the moment that I would like to take forward later in the form of wearable computers. At the moment, I am using a Raspberry Pi as the computer itself. It presently ...
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5answers
2k views

Power requirements when overclocking a Pi to Turbo mode

Whenever I enable Turbo mode on my Pi and restart it, it fails to boot. I am currently using a normal 5.0V smartphone charger to power my Raspberry. I am assuming that it is not powerful enough... ...
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1answer
641 views

Time machine over wifi: What hard drives do not give “failed verification” issues?

I have installed netatalk and set up my Time machine to backup via wifi on an USB hard drive wired to my RPi (followed these instructions). Nevertheless I repeatedly have "failed verification" issues ...
5
votes
2answers
154 views

Make RPi keep an semi-accurate time after power loss

I use Motion detection and a webcam as a security camera. It's headless with no internet or keyboard. To turn the camera off while it's not need I just turn the power supply off. Because I shut it ...
3
votes
1answer
151 views

Why does my raspberry failt to boot with a wii nunchuck connected

I have connected 3 different official nunchucks to my raspberry the following way; pin 1: 3.3v, pin 3: SDA, pin 5: SLC, pin 6: GND I tried several power supplies including a 230 watt pc psu but every ...
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1answer
328 views

Raspberry Pi won't boot up

When turned on, the TV just says "HDMI 3". My power light is stable (red), and the "ACT" light flashes 4 times, then pauses the 4 times... It says the start.elf is not launched, but I can't find a way ...
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1answer
494 views

Problem with an USB extension cable powering a HDD

I have a 2.5" HDD with two wires, one for USB data and another for USB power. It works perfectly if I connect the USB power cable to the power. Now, I need to move the raspberry pi and the HDD, so I ...
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2answers
2k views

No HDMI output when HDMI cable is connected after power supply

I've noticed that I don't get any HDMI output to a monitor if I connect the HDMI cable to the Pi after I plug in the power supply, because I have two RPis for one monitor -- one running Raspbmc, the ...
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0answers
140 views

My Raspberry Pi is turning off after about 3 minutes. Any ideas?

I've tried using different cables, different cards, power supplies, different HDMI cables even ... but my Raspberry Pi just shuts down after about 2~3 minutes. I tried with different power supplys ...
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3answers
1k views

Helping the Raspberry Pi to work on a weak USB power supply

I'm trying to power my Raspberry from my TV's USB port (originally intended to show pictures from an usb stick). It mostly works, but I get some random reboots, while it works perfectly with an ...