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Questions tagged [power]

Power is the rate at which energy is supplied or consumed, often measured in Watts. This tag covers electrical power specifically, the voltage and current specifications for supplying power to the Pi, the specifics of power consumption by the Pi, and methods for controlling Pi power consumption.

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Unable to detect NVMe M.2 ssd in raspberry pi 4 8gb

Is it possible to use an NVMe M.2 as external storage on a Pi4b 8GB? I have the following PCIe device: samsung NVMe PCIe 3.0 SSD 970 Evo plus, 500 gb + external hard drive enclosure with a C to A ...
1 vote
3 answers
625 views

Can I turn On and Off my Raspberry Pi 3B+ on a specific time?

I have my Raspberry Pi 3B+ powered via Solar Panel. And I know that Raspberry Pi especially 3B+ have low power consumption unlike any other Raspberry Pi version. Though Power Consumption was not that ...
1 vote
1 answer
448 views

Pi 4, Hifiberry, and touchscreen power

I recently finished my basement and am in the process of getting it all configured, and one thing I wanted was to build a Raspberry Pi streaming device. I got a 3D printer for Christmas and found this ...
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2 answers
60 views

Im using this Canna Kit Rasperry Pi power supply low voltage warning

I'm wondering why I'm getting a low voltage warning with it after all it's recommended by so many sites. I do have it in a 5-slot power brick-like extension cable. Does anyone know why I might be ...
0 votes
1 answer
1k views

How can Rpi I2C read a Coulomb Counter, up to 18V, 10A?

I"m building an autonomous boat with a solar panel. The heart of the boat is a Raspi zero which contains a small program doing the navigation. I've got a 3S li-ion battery of which I'm already ...
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1 answer
54 views

Pi5 Power Supply - Can I use one?

I just buy a brand new Pi5 and wonder if I can use this supply before get the New 27W 5.1v=5A supply for PI5 from Amazon Is there any risk to damage anything on the board from this charger?
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1 answer
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Using Raspberry Pi to control light dimmer switch

In my house I have my lights hooked up to an ELKO 400GLI. I've not found good spec sheets for it online, but what it seems to do is control the brightness of the lights using a copper coil. What I ...
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1 answer
300 views

Controlling multiple servo motors on rpi 4

Do I need a hat module for my raspberry pi to control 6 servos? I’ll be using an external power source.
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2 answers
2k views

Could a raspberry pi pico power a PC fan

I have recently soldered a 90mm PC fan to a USB cable and it works great. I was wondering if it would be possible to power said fan off of the 5v output pin on the pico, and solder the black wire to ...
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1 answer
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PoE hat for PI 5

I have a poe hat (b) made by waveshare for my rpi 3/4. I really like it because of the oled display that outputs the IP adreess,cpu temps and things like that. My question is, is it compatible with ...
1 vote
1 answer
836 views

Powering 3 HDD's with external power

I'm trying to connect 3 HDD's to my Pi3. They are 2x 3.5" and 1x 2.5", all powered with a external power supply: https://www.inateck.com/inateck-ua1001-usb-3-0-to-ide-sata-adapter.html It works if I ...
1 vote
2 answers
313 views

Lipo battery hat or attachment which supports seamless USB recharging

I just want to add UPS functionality to some of my flock of raspberry pis, and with an emphasis on portability. One of the ways to get this is with certain USB battery banks. I have one here that is ...
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1 answer
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Portable power RPi 3B+

What's the best way to power a RPi 3B+ in an open field? My requirement is to put this system out in the field for at least a week without attending it in a stretch. As per basic calculations, the ...
1 vote
2 answers
738 views

Using a PD USB hub for power and data for Pi 4

I want to use a 7" LCD (not the official Pi 7" LCD) together with the Pi 4. According to the LCD documentation, it requires 2A. I was planning initially to power the LCD through one Pi. Now ...
1 vote
1 answer
130 views

Raspberrry Pi 4 doesn't display image

I just received my raspberry pi 4 and I've got a basic setup ready to go. However when I turn the Pi on nothing displays on screen. I've got a microSD with Raspberry Pi OS installed already. Here's ...
3 votes
4 answers
3k views

Argon One case doesn't power RaspberryPi

So I have just unwrapped and installed my new Argon One case that I bought from a retailer over the internet. Everything went smooth... except it doesn't work. It just doesn't start up. When I press ...
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1 answer
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Is my raspberry pi 4 broken?

I'm using raspberry pi 4 to operate a servo motor and it was working appropriately yesterday. Today, I found the pi is getting too hot to hold and I cannot ssh to the pi. Because I cannot shutdown it, ...
2 votes
1 answer
1k views

Unable to shutdown Raspberry connected to UPS [closed]

I'm quite new to Raspberry world and I need you help :) I've configured my Pi as a small NAS and download station but I also use it to manage some sensors in my house, so I bought an UPS. The ...
2 votes
1 answer
46 views

power problem with pi4 and 7" touchscreen

I have a Pi4 that I have connected to a 7" touchscreen. The touchscreen is powered by a microUSB cable, the Pi4 is then powered through the GPIO, per the instructions. I keep getting the low power ...
1 vote
1 answer
55 views

Power Monitoring Physics Experiment

Hi i am just planning a Physics experiment where i accelerate Ionized Gases onto a target sample. For this Experiment i need to monitor the power constantly over a week or longer. For my later data ...
1 vote
2 answers
39 views

How can I switch mains-powered loads wirelessly, with low cost and low power consumption

I'm setting up a Pi (currently developing on a a 3B, but I'm assuming I'll upgrade to a 4B) as a CCTV server and fileserver, but I've also just got solar panels installed and would like to switch ...
1 vote
1 answer
768 views

Monitoring power consumption of a Raspberry Pi 3B+ device

I am wondering if it is possible to measure the power being consumed by the CPU core (ARM chip) of a Raspberry Pi? Specifically, I want to monitor this power consumption for various applications that ...
1 vote
1 answer
79 views

RPI3 WiFi connection is established only when connected to the access point with a LAN cable

I can successfully connect to my RPI using SSH when the RPI is connected to a wireless access point and powered by a Xiaomi battery; but I cannot when I pull off the power and plug in the socket & ...
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1 answer
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Ubuntu server on raspi 3, poweroff.. how to reboot?

I grabbed an iso of ubuntu 16 for raspi 3 from here: https://ubuntu-pi-flavour-maker.org/download/ I ssh'd in with ubuntu, set a password. Ran apt-get update && apt-get upgrade All good so ...
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2 answers
594 views

Calculating power adapter needs for my Compute Module 4 setup

So I'm finding it a little difficult to figure out how I should be powering my setup. I'll have Waveshares IO board here: https://www.amazon.com/gp/product/B08VJBGD1Q/ref=...
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Raspberry Pi 5 becomes buggy without monitor

I recently purchased a Raspberry Pi 5 and attempted to use it as a server for a Node.js program. The Raspberry Pi functions properly when connected to a monitor, and when I access it via SSH from my ...
1 vote
1 answer
318 views

Power issue: USB 4G Modem via USB Hub

I am hoping to get some advice, below is the hardware I am using, Raspberry Pi Zero 1.7W (Raspbian OS Lite - 2022 Kernel) Ethernet / USB HUB HAT (B) Hologram Nova 4G Modem Initial power tests, I see ...
5 votes
3 answers
12k views

Underclocking PiZero for power saving worth it?

How much power does the PiZero consume on it's lowest possible cpu clock setting (underclocked)? (Let's say the only usb add on is a wifi dongle.) And... is it worth it?
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1 answer
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Powering aAdafruit PiTFT 2.4" HAT Mini Kit - 320x240 TFT Touchscreen. via a power bank. (Needs a bit more power)

I've been having problems getting this set up and now I do believe I know why. I got an Anker Power Bank (26,800mah) Not the Power Core + Input: 5V ⎓ 4A (5V ⎓ 2A Max Per Port) Output: 5V ⎓ 6A (5V ⎓ 3A ...
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1 answer
176 views

Mirabox Capture Card and External Power Source

I'm looking to power my Raspberry Pi 4B from a 12V tractor battery. I have a buck converter which can be found here. I am considering using this device to step-down the battery voltage and hook up the ...
-1 votes
1 answer
38 views

RPi 5 Python Shhutdown command shutsdown then reboots

The issue I am facing is that my RPi 5 running bookworm is running a heavily modified version of the script found on https://learn.sparkfun.com/tutorials/raspberry-pi-safe-reboot-and-shutdown-button/...
1 vote
1 answer
154 views

How to physically turn the a Raspberry Touch display on and off?

I use a Raspberry Pi Touch Display that I connect like shown in the following picture to my Raspberry. The black and red wires are connected to thee GND and 5v pins respectively. Now I want to ...
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2 answers
196 views

Permanent & Safe Powering of Raspberry Pi in Confined Space

I have a small project that involves the automation of the lights in a room using a Raspberry Pi and a set of four relays. All of the software and hardware is operational, and it is ready to be ...
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1 answer
1k views

Are there any battery backup options that work with a PoE powered Pi?

Looking to have a Pi (4) that is powered over PoE - are there any battery backup options (i.e. hats) that can be stacked with the PoE hat & supply power if/when the PoE fails (and then re-charge ...
0 votes
1 answer
69 views

Problems powering a 3B+ with 7” touchscreen

I’m trying to create a battery-powered RPi 3B+ system and am running into issues almost immediately due to the Pi’s power requirements. I’m testing using a 5V 3A wall power supply which is running ...
0 votes
1 answer
233 views

Is the Raspberry Pi 5 Power Supply Compatible to the Pi 4

I need a new power supply for my Pi 4. Somewhen I will use a Raspberry Pi 5, but it needs the quite special Raspberry Pi 5 power supply. Is the Raspberry Pi 5 PSU (officially) compatible to the ...
0 votes
1 answer
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Anyone knows what this part is on RPi 4? Need help identifying it

something went wrong. After fresh Ubuntu installation Pi got stuck at bootloop. After a few times of crashing and rebooting i guessed bad ISO so i wanted to take the card out. That's how i ended up ...
2 votes
2 answers
162 views

Pico W common reference ground with 5V power supply safe?

I have a question regarding a new project I’m currently working on. It involves a Raspberry Pico W, an external 5V 12A power supply and a WS2812B LED strip. Now, I already got it working flawlessly ...
1 vote
1 answer
295 views

Alternative Power Supply for Raspberry Pi 5 with 67 watt

I don't know why, but my original Raspberry power supply doesn't work anymore. I found a power supply at home, but it provides 67 watt instead of the original 27 watt. Is this a problem or could using ...
-1 votes
1 answer
237 views

Undervoltage with 5V 5A PS

I know this is a subject that is exaustive and at risk of sounding ad nauseam I have to ask because I have no solutions. My pi is reporting undervoltage. I haven't ran into this since using a Pi1 ...
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2 answers
927 views

Will accidentally powering a pi with more than 5V break it?

I have a variable power source(5V, 6V, 9V, 12V, etc...) with a usb plug which I had powering my pi 3B a few months ago, but one day (a few months ago) I accidently had the power source set on 6V(it ...
43 votes
5 answers
77k views

How Raspbian Detects Under Voltage

How does the Pi know it being underpowered and to show the lighting bolt? As most of us know, if you use a bad power supply you get the lightning bolt telling you are underpowered. I noticed that when ...
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1 answer
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Is it ok to usb micro male - micro male for USB device?

I am hooking up an arduino micro to my Pi Zero W. For space, I used a short micro male-male USB cable: https://www.amazon.ca/CableCreation-Micro-Kindle-Android-Tablet/dp/B01M5GZ3N0 When I use this on ...
0 votes
4 answers
1k views

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 ...
0 votes
3 answers
716 views

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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1 answer
2k views

Raspberry Pi not booting automatically after a power outage

I have an RPI4 (Buster) with SD Card for root storage as a home server. Recently I noticed that it does not boot up automatically after power outages. When the electricity is turned back, all lights ...
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Unable to restart after Ubuntu update

I have Raspberry PI 4B 8 GB with "Ubuntu 22.04.3 LTS (GNU/Linux 5.15.0-1034-raspi aarch64)" I start Ubuntu and see message "System information disabled due to load higher than 4.0"....
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1 answer
1k views

How does the new RPi 5 function with a USB power supply?

Each new model of RPi "pushes the envelope" in terms of the amount of power it draws over a USB electrical interface. The RPi 4 was spec'd to require up to 15 watts: 3 Amps at 5 Volts. Three ...
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4 answers
284 views

Switching a bistable latching Relay directly - Not enough power from GPIO?

I'm trying to control this bistable latching Relay (RT314F03) After not being able to switch the relay I was wondering if that's even possible. While the Relay is rated for 3V, its "Rated Coil ...
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0 answers
21 views

Ground offset when powering devices directly from 5VDC transformer

I am reading in current sensor (ACS712 20A) values using the MCP3008 ADC into my rpi zero. I am also using a Songle SLA-05VDC-SL-C relay, and have found that both the current sensor being on, and ...

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