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

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37 views

5.3V power source w/ 24kohm resistor

Let me start with mention that I don't know shit about electronics. I bought UBEC to power my RPI but it had output voltage of 5.3V so I decided to use 24kohm resistor to lower it down. Now voltage on ...
0
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0answers
30 views

Pi not recognizing USB ports with an adequate PSU

So I got the Raspberry Pi B+ about 3 weeks ago and it hasn't been functioning 100% correctly... I have a PiHub to power my ehdd (1tb WD Elements), Wifi Adapter Realtek 8188CU, and (usually) the ...
1
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0answers
33 views

UPS for raspberry pi

I want to be able to power my pi like a smartphone (ie from battery or from mains (while charging the battery), hot swappable) I know there are boards like the MoPi that achieve this, but the ...
2
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2answers
104 views

Does Raspberry PI Model B+ Works Over 24*7 and 365 days continously? [duplicate]

Does Raspberry PI Model B+ Works Over 24*7 and 365 days continuously??
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0answers
17 views

Raspberry Pi case/power supply/wall socket accessory [duplicate]

I need to plug my pi into a wall outlet and leave it there. I have yet to find any sort of case that includes all these things (case and micro-usb to power supply). Has anyone seen or made anything ...
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3answers
86 views

Raspberry pi case with power supply

I need my raspberry pi to be able to plug into a wall directly and use the wall outlet as the power supply. I've done a bunch of googling and can't find anything like what I need. Has anyone seen any ...
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2answers
94 views

Reducing 24V to 5V for RPi PSU

I'm trying to power several devices off of a breadboard. For simplicity I want to power these all from the same PSU. The highest voltage amongst the devices is 24V. I was looking to use a 24V 2A ...
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3answers
92 views

7.2V battery with Raspberry Pi

I want to use a 7.2V (4200mAh) battery with my raspberry pi but I need to convert the output to 5V (2000mAh), I tried the following formula: Ω = V / A but when I try to find the ohms the result ...
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1answer
67 views

Using battery pack as a UPS

I need to use raspberry devices as mini servers. I'll need to install ~100 of them in different locations. In those areas, electricity power offs are quite common, so I'm thinking using a cheap usb ...
4
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2answers
114 views

What power supply should be used for the B+ model?

So I'm thinking about purchasing a RPi B+ model, and the Pi website states that the power supply should output 2A through a Micro USB supply. OK, but in terms of volts what should it be? Is 5V ...
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votes
5answers
1k 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? ...
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2answers
58 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 ...
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2answers
213 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 ...
1
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2answers
61 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
105 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
31 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
81 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 ...
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votes
3answers
140 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
77 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
75 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
62 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
146 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
115 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 ...
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1answer
78 views

Housing and temperature

I'm 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
86 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 ...
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2answers
583 views

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

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 solution; using a ...
2
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1answer
79 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
82 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
106 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
181 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
108 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
186 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
43 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
2k 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 ...
1
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1answer
869 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
475 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
3k 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
164 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 don´t have a powered USB hub BUT i do have other power supplies. So I tried ...
2
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4answers
163 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
votes
1answer
113 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 ...
2
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0answers
78 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
0
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2answers
115 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
130 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
1k 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
536 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
382 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
228 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 ...
1
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2answers
316 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
237 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
127 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 ...