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

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2
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4answers
140 views

Can the pi power this 2.5" drive without a usb hub?

I want to use my PI model B as a NAS, but I'd like to avoid using a usb-hub. I have a 2.5" western digital 1tb usb drive (this one), and a 2A power supply for the pi that I'm planning on using with ...
5
votes
0answers
117 views

Running RPi on Solar Panel and battery

I’m quite new in electronic projects and so my basics are quite limited. I've been reading a lot regarding this topic (refer to the title) and I’m currently planning to buy the suitable Solar Panel, ...
0
votes
2answers
62 views

What is the best power supply for the Raspberry Pi B+?

I have read through What power supply should be used for the B+ model? to find the best power supply for the B+. I have read that if you are connecting additional things to the Pi, 1.5 A may not be ...
2
votes
2answers
79 views

Switching power source from power bank to mains without interrupt

I'm planning to build a robot similar to one described here. The pi and the controller are going to be powered from powerbank. However, as big fan of live coding I am (there's gonna be some LISP ...
1
vote
1answer
73 views

External shutdown (properly) button?

I have a R-Pi that I want to mount in an enclosure. The enclosure already has a couple external buttons on it. I'm trying to find some sort of circuit that I could by that I could wire the buttons to, ...
0
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0answers
35 views

Pi dead: U3 IC gets extremely hot

I got two Pi's, and both of them have the same problem. To the first one, I connected a 3.3V power supply to pin 1, following which the board didn't boot and no LEDs lit. The board seems to be dead, ...
1
vote
2answers
56 views

Resistor calulation for two LED

I want to connect two IR LED to the 3.3v output on the PI in series. I need to reduce the 3.3v to 3.0v. What kind and measure should my resistor be? I swear this is not a word problem from ...
2
votes
2answers
156 views

5.3v power source into the GPIO

I bought a UBEC (Universal Battery Elimination Circuit), which, for those not familiar with it, is a "5 volt" dc-dc power conversion circuit (you can get them as high as 5A). It gets it's name from ...
1
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4answers
70 views

Powering a stack of Raspberry Pis

I'm looking at putting together a small stack (maybe 4 - 6) of Pis to host my currently externally hosted services, plus a router and a media server. Software setup is not a problem and basic hardware ...
0
votes
1answer
59 views

raspberry pi rebooting all the time

My Raspberry Pi keeps on rebooting all the time. It boots up just fine, I can use it for some time (3 to 15min), then it reboots. Some of the things I've tried: -Changing the transformer, had a 5V ...
1
vote
2answers
222 views

Car computer how to connect to car battery and also not drain battery when the car is switched off

I am doing research on creating a car computer with raspberry pi (so I have all the basics down before I start this project) and I am looking on a way to switch the whole device automatically whenever ...
1
vote
2answers
86 views

Power supply for raspberry pi model b+

I have a 5V/1.5 A power supply lying around. Will this be sufficient for the pi b+ model?
0
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2answers
50 views

contact pin 1(3,3v supply) pin 6(0v ground) reboot [closed]

I want to supply a circuit with these two pins. But when they contact each other my raspberry reboot. Is my raspberry broken?
0
votes
0answers
40 views

External power supply needed to run two stepper motors?

I am following this tutorial for a CNC laser engraver (http://funofdiy.blogspot.co.uk/2013/10/a-raspberry-pi-controlled-mini-laser.html). I have got two stepper motors from some old DVD drives and the ...
1
vote
1answer
62 views

Do 5V/3A External Batteries exists? [closed]

Need one to power my PiHUB so my project gets portable, and I don't need a cable. Unfortunately the battery packs I find on amazon, are 5V/3A ad in: 1 USB 5V/2A, and 1 USB 5V/1A ... so 2+1 = 3A ...
1
vote
1answer
76 views

Portable power supply for a PiHub?

I love my PiHUB and would like to have a or table power source, so I can make my projects mobile :) Is there any product that I could use? It uses 3A 5.2V. Alternatively I'd appreciate any ...
0
votes
2answers
192 views

Powering Raspberry pi with 12 volt input

I am trying popped a transistor while trying to power my raspberry pi from a bread board. I have a 12v battery pack that I am going to use to power my raspberry pi and some servo's. Yesterday I ...
1
vote
2answers
565 views

Is it possible to power a model B+ via the 5v pins on the GPIO header?

I'm making a powered daughter board to mount my B+ Pi on. Can I power the Pi entirely through the 5v pins on the GPIO header? More importantly, can I also supply reasonable currents to USB devices ...
-1
votes
2answers
76 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
votes
0answers
60 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
vote
0answers
85 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
votes
2answers
172 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??
0
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2answers
317 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 ...
0
votes
3answers
179 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 ...
0
votes
1answer
81 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 ...
5
votes
2answers
595 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 ...
5
votes
5answers
3k 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
votes
2answers
111 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 ...
1
vote
2answers
678 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
102 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?
0
votes
2answers
366 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 ...
0
votes
1answer
34 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 ...
2
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0answers
195 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
votes
3answers
426 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 ...
1
vote
1answer
96 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 ...
0
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0answers
135 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. ...
-1
votes
2answers
89 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
votes
0answers
197 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 ...
0
votes
1answer
211 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 ...
0
votes
1answer
82 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
votes
1answer
158 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 ...
1
vote
2answers
1k 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
votes
1answer
84 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
votes
4answers
91 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 ...
0
votes
0answers
143 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 ...
5
votes
2answers
265 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
votes
1answer
129 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.
0
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2answers
244 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 ...
1
vote
1answer
56 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 ...
5
votes
1answer
3k 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 ...