All Questions
Tagged with power-supply power
228 questions
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With the Pi Zero W plus a 2.4A adapter, can I safely draw up to 2A from the 5V pin?
Since the Zero W doesn't have a polyfuse, am I right in assuming that the 5V pin can safely supply whatever current the power supply puts out minus the draw from the Zero W board itself (and any ...
- 113
4
votes
2
answers
667
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How long does a power interruption have to be to bring down a Raspberry Pi?
I'm working on providing a stable supply of 5V power to a Raspberry Pi over the micro USB input port. One possible issue I've noticed is occasional instantaneous dropouts when switching over from ...
0
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1
answer
236
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5.6V with official touchscreen [closed]
As I mentioned earlier I am getting low power warnings with a 5V adapter, and have now obtained another one that says 5.6V. Am wondering if this might work, or if it will damage the Pi and/or the ...
- 218
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2
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74
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Boot only with usb cable energy
My raspberry worked fine with a 5V-2A charger.
From few days, It boots only with the energy coming from the USB cable from my computer.
If I use the usual charger, it goes in a boot loop, displaying ...
- 9
3
votes
3
answers
4k
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Low power warning using touch screen
I have a RPi 3 and a 7" touch screen, powered by a MW GS18E05 adapter. It says output 5-6V, 3.0-2.5A, max 15W.
The top right corner yellow flash low power warning shows up when I boot and then it ...
- 218
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0
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40
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Power Draw Requirements for multiple components and PI
I am building a rover, that ideally I would like to power from a single 12V Marine Battery. The battery provides power to all the components:
Pi3 through a Power Converter
12V LED computer monitor, ...
- 1
1
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5
answers
22k
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Powering a RPi with +24VDC for an industrial application
I need to Power an RPi from a +24VDC industrial power supply. The RPi is mounted in a DIN-rail mounting box, in which there is plenty of space. The +24VDC is quite reliable and does not vary by more ...
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10
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1
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13k
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How to make a simple, reliable 15-second UPS for shutdown?
Use case: On power loss, the pi is to gracefully close all I/O (already kept to a minimum) and shut down, to be manually rebooted later.
A supercapacitor works (I think; not sure of voltage near the ...
- 251
1
vote
1
answer
102
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Power required to run multiple appliances at once
I have an electronics question. I am no electrician and am trying to build an alarm pi Mark2. Currently I have a 12v power supply running through a relay which the pi turns on and off to trigger my ...
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1
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3
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2k
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Wall plug to usb block to raspberry PI
Would the raspberry pi be damaged or effected at all if I simply took a usb block that you would use for a phone plugged it into the wall and used that for the power with a random micro usb cable?
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1
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Can I power a RPI3 from a USB-C 3A power supply and a USB-C to Micro adapter?
I'm a little confused by the power standards. as far as I can tell, USB PD (power delivery) specifies a maximum of 2.1A.
The RPI3 requires recommends 2.5A, 0.4 more than the spec. Canakit's power ...
- 103
2
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2
answers
2k
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Camera causing Pi to reboot?
I have a Pi Zero with the version 2 pi camera. Lately, when running a program that takes pictures continuously (about once every 2 seconds), the device completely stops and reboots. The program works ...
- 93
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0
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78
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Using MoPi power board with RuneAudio (simbamond installation)
I would like to power my Pi running Runeaudio with a MoPi power board.
However, it is designed to work with Raspbian, and the installation of the simbamond package is required.
Since Runeaudio is ...
1
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2
answers
286
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Low power alert logo
While simple tasks like browsing web, a lightning bolt appears in the top right part of the screen.
I'm using a 2A charger.
Is this really dangerous, for the pi or the SD card or the peripherals ...
- 23
0
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4
answers
1k
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RPi3 show under voltage warning while input voltage seems good
I'm designing an embedded system that will be based around a RPi3, combined with the official touch display. In working out how to power the device, I'm getting stuck because the Pi I'm using keeps ...
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How does a Raspberry Pi 3 react with low voltage as batteries die? [duplicate]
How does the Raspberry pi react as voltage drops from batteries die? Does it eventually automatically halt or do I need to worry about unpredictable side effects from running the batteries dead?
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1
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0
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53
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How to determine from hardware, when I can shut off a Raspberry Pi 3
I am wiring up a raspberry pi to use a battery supply and I would like it to be a single switch controlling its power. Obviously, I don't want to cut power when its running, but I also don't want two ...
- 111
0
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2
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1k
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Raspberry Pi Zero powered by Buck converter
I am building a light I can control from the command line across WiFi. I've got a Raspberry Pi Zero, a tiny little WiFi dongle from ModMyPi and a relay with VCC, Ground and IN pins. I also bought one ...
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0
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3
answers
717
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New Raspberry PI is not booting [duplicate]
I am new to raspberry pi.
Here is video what is happening when I plug it to main and my HDMI monitor
Recording.
At the end of this video I tried to show what type of power supply I use, but it's ...
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2
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2
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2k
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Is it possible to run Pi Zero from Phone Battery
I would like to create a retro game project and I have to be able to have a portable Pi without being plugged into a electric socket.
I have been looking into my phone battery and saw that it's 4.2v ...
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1
answer
1k
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How can I display the charge from a battery on my Pi? [closed]
I have a robot that uses a Raspberry Pi 3 Model B and a 12 volt sealed lead acid battery. The battery powers other things (motors, etc), and the Pi receives a regulated current.
How can I display the ...
2
votes
1
answer
112
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Getting current source information
I am going to do a Raspberry Pi project and in order to know some system status I am going to have a GSM module to send text messages. In order to avoid power cuts (for example in a storm) I have a ...
1
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1
answer
5k
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Reusing a phone battery to power a Pi
I know this question might be too broad or too generally worded, but I'll ask it anyway, because I can't find it anywhere else.
Is there any simple way how to convert any old phone (fully functional) ...
- 115
1
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1
answer
781
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Alternate power methods
I have an embedded zero I'd like to power from a battery pack with 4 AAs. I know I can connect the leads the the GPIO as well as cutting apart a cable to plug in but I am wondering if I could solder ...
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1
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3k
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Power Supply for PI Zero [duplicate]
I was thinking about getting a cable for Pi Zero, this one:
https://www.adafruit.com/products/1995
But it's 2.4 ampere, won't that overcharge the little Pi Zero and damage it?
The specifications say ...
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1
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3
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4k
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Is it possible to power an orange pi/raspberry pi directly from a computer's power source?
I am looking for a way to put a raspberry pi like computer in an other regular computer. I don't care if this way is a "hack".
The first thing I need to take care of is the power source (5v, 500ma ...
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1
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2
answers
1k
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Powering Raspberry Pi 3 alternatives
I am starting my first raspberry pie project and I am essentially going for a entertainment center. I ordered a 2.5A power adapter to provide power to the unit, but was wondering if it was possible to ...
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5
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9k
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Does the Raspberry Pi 3 regulate the voltage on its 5V pins?
I need to supply 5v analog power to an adc. I am supplying the pi with Li-ion batteries, so the voltage falls over time, but does remain within range of the pi's required input.
If the input voltage ...
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2
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2k
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Ok to use 2 port USB Power adapter?
I recently bought a RPi 3 but got a concern with its reliable operation in relation to the power source.
A store near me has something like this but it has only two ports - http://www.amazon.in/...
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1
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143
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Power Raspberry Pi and charge Adafruit FONA from same source
I have 12v leisure batteries hooked up to solar panels, I want to be able to power my pi (5V 0.7A max) and charge the Lipo battery for the Adafruit FONA (5V 2A max) for a combined 2.7A max (i think) ...
- 125
1
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2
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11k
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12V DC buck converter to power Raspberry Pi
I found a DC-DC buck (step-down) converter on amazon that will drop my 12V supply to a 5V 3A max with micro USB already attached. can anyone foresee any issues with using this following product in ...
- 125
2
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3
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2k
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Easiest way to delay shutdown by a few ms after power loss
I'm looking for the easiest way to delay the loss of power to the pi (for a duration on the order of milliseconds) after the power supply is lost. I'm no good at designing circuits and I'm guessing ...
- 179
0
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2
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2k
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Converting 24V to 5V for GPIO power supply
in my project I have to power the Raspberry pi over the GPIO port. I know that the voltage must be regulated to 5V.
My input is 24V so I have to convert it to 5V.
I'm currently designing a PCB with ...
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5
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2
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2k
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When to power GPIO projects from external power source?
I am working on a home automation project using:
rPi 3 with 2.5 A power source
3 x MCP23017 for GPIO port expansion
3 x 8 ch solid state relay board by Sainsmart
20 x physical wall switch
(future) ...
- 53
4
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1
answer
6k
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Control 5m of WS2812 LED Strip: Wire it up
I want to control 5m of WS2812 LED Strip with my Raspberry Pi, which will be placed around two Ikea Billy shelves. I read some articles and tutorials regarding this topic:
http://popoklopsi.github....
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4
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1
answer
19k
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Can I power a Raspberry Pi 3 with a Smart TV's USB-Port?
We use a Raspberry Pi to display infos on a TV. The content is more or less HTML with some Animations. Currently we use a Pi2 and the power does not seem to be a problem. Recently we came up with the ...
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3
votes
1
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370
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Switch power banks by temporarily attaching two of them
I'm having a hard time finding out, if it's possible to have two power banks attached to a pi. Is there something like an Y-cable or something?
Use case is, that I'm planning on doing a timelapse ...
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1
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2
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3k
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Check if current if flowing through 220v ac wire
I want to add a third switch to a room with two existing switches.
This third switch will be simulated by a 4 relays and a raspberry pi.
Image source: wikipedia, Multiway_switching
So 1 have one ...
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2
votes
2
answers
1k
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Power up from USB Cable or GPIO?
I have made a battery pack to power up my Raspberry Pi 3 for a project. The pack uses 2 Samsung ICR 18650 Li-Ion batteries (connected in series) and a 5V 3A UBEC and gives 5.05V output.
Now I'm a ...
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1
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1
answer
1k
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Connecting external Hard Drive to Raspberry Pi 2 [duplicate]
I am trying to connect a 2 Tb external Hard drive (ADATA HD710) to my raspberry pi, but the problem is that when I connect it to one of the USB ports, the raspberry pi stops working. I am not sure if ...
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2
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7k
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Powering a Raspberry Pi from a vehicle battery 24/7
I am working on a project where my Pi is always connected to a vehicle to provide its GPS information.
Seeing such a device must be always turned on, I am attempting to tap into a battery line that ...
- 103
2
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2
answers
240
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Raspberry Pi Power usage monitoring
How can I assess whether my power source is sufficient for the Raspberry Pi 3 I am running (including all peripherals)? Is there a tool which can be installed on the Pi to install this or will ...
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2
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2k
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Power Raspberry Pi 2 From vehicle battery
I have seen many tutorials and blogs of people setting up their PI 2 in their vehicles for media systems etc.
I would actually like to attempt the following however I am unsure how to power the pi. I ...
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1
answer
96
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Powering the Pi through GPIO
I have seen many tutorials about powering the Pi through the GPIO. My question is why do people do it?
By powering the Pi through the GPIO, you lose protection from surges in current and voltage, so ...
- 4,200
1
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1
answer
642
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Powering up the Pi 3 with Samsung ICR16850 LiPo battery
I am working on an autonomous robot which is controlled by my RPi 3. I was concerned about how to power up the Pi, so I dissected an old laptop battery and got 6 Samsung ICR16850 LiPo cells from it.
...
- 303
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0
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116
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Why does my RasPi Model B (256 MB) have low voltage?
I have an old rev.2 (I think) model B. It already has the 000 Fuses, but still only 256 MB of RAM. I wanted to use it for some small projects, but it does not run very stable. I tested TP1 and TP2 and ...
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3
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3k
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Can This UPS(UNINTERRUPTIBLE POWER SUPPLY) Run a Raspberry Pi for 24hours?
I am setting up an experiment that will need to run for 15 days straight and I am using a Raspberry Pi as a data logger. In my place power outages occurs from time to time. I am searching for cheap ...
- 135
0
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1
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92
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PWR LED is off for a specific power supply but everything works fine. Does this indicate a problem?
For my Raspberry Pi B+, I have a 5V 5A adapter.For the adapter though I had to cut and connnect a micro usb cable (to power input of RPi) and another cable to the power outlet (kind of and industrial ...
- 3
7
votes
1
answer
4k
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What are the cooling requirements for Raspberry Pi 3?
The new Raspberry Pi 3 has been beefed up from the previous version. Now it comes with a Broadcom BCM2837, which is an ARM v8 quad-core Cortex-A53, clocked at 1.2GHz. I have also seen somewhere a ...
50
votes
2
answers
117k
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Raspberry Pi 3 vs Pi 2 power consumption and heat dissipation
I've seen the announcement of the new Raspberry 3 but didn't find any info regarding power consumption and heating.
A 1.2 Ghz 64-bit CPU is great but does it draw a lot more power? Shall heat be an ...
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