Questions tagged [power-management]
Power Management is a feature of electrical appliances to enter a low-power state when inactive to reduce energy consumption.
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One button for on/off of Raspberry Pi 4, still using i2c
I can't find any additional information online, so I'll try to ask it directly. I would like to put the Raspberry Pi 4 (with Lineage OS) in a case and be able to turn it on and off using just one ...
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USB dongle for remote control doesn't wake up
A bit stumped on this one, hoping any of you fine people can assist...
I have a 2.4g remote control with a USB dongle that I'd like to use on a Raspberry Pi Zero 2 W running Raspbian Lite 32bit. When ...
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How do I prevent raspberry pi automatic turn on when I connect the power plug?
I connect the power in plug. After that raspberry pi automatically turn on .
But I want it to be on when I press the button, how can I do this?
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Can I power my PI via USB if I Disable USB?
I learnt that I can disable the USB circuitry with this command:
echo '1-1' |sudo tee /sys/bus/usb/drivers/usb/unbind
Does doing this disable USB power too? Or just data/connectivity?
I would test ...
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Rasberry Pi 4 and display sleep wakes the display immediately again
Trying to figure out why the display I want in sleep mode immediately comes back on again when I tell it to sleep.
For example entering xset dpms force off in the Terminal and pressing Enter will make ...
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Raspi z power consumption without monitor
I run a raspiZW Rev 1.1 with bulleseye lite, headless via ssh. It only waits for a PIR-event to take a video sequence.
Connecting nothing but the camera (B, Rev 2.0) it consumes 110 to 160 mA. ...
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How to turn off the Raspberry Pi fan when shutdown
I purchased the official raspberry pi 4 fan and follow the documentation to setup the fan. The fan turned on in the beginning when power on my raspberry pi 4 then it's off after finish boot up. When I ...
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Questions on dtoverlay gpio-poweroff
I'm working on a soft-latching power control for my raspberry PI project. I want to use the 'gpio-poweroff' overlay to cut all power after the system gracefully shuts down. I have it working, but I'm ...
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Dead Raspberry Pi, Rev 1.4, please help me identify model of the chip [duplicate]
Hi! I am trying to fix shorted out Raspberry Pi 4B and I identified this chip as bad (Running extremely hot while Raspberry looks dead).
The chip itself is scratched and protected from reading model ...
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Powering Raspberry Pi 3B+ with Multiple Attachments: Recommendations for Portability
Ok so I'll try and keep this short and sweet. Basically, I have all these attachments for my Raspberry Pi 3B+
Raspberry Pi 7" Touchscreen
Case for Touchscreen w/ Cooling Fan
Raspberry Pi Camera ...
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I need a seemingly large battery for project containing several sensors, what should I do?
I'm working on a project with several sensors needing various 3.3v and 5v power. I'd like to have my sensors running for at least 24 hours before needing to recharge everything. I did the calculations:...
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Disable permanently wifi power management
After adding sudo iwconfig wlan0 power off to /etc/rc.local, I checked whether it has been applied with iw wlan0 get power_save. I notice that indeed it has been applied cause I get Power save: off. ...
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LiPo Battery HAT behavior
I was reading the description for LiPo Battery HAT for Raspberry Pi and it at best seems very unclear to me:
This is not a UPS! The Raspberry Pi will restart when you connect it to the Pi.
What does ...
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Wifi power management keeps turning on - Raspberry Pi 400, running Ubuntu Server
I have tried every option I could find, but no matter what I try, after rebooting my Raspberry Pi 400 running Ubuntu Server 22.04 the WiFi power management feature resets to ON, meaning the WiFi goes ...
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Raspberry Pi 3B+ board SMT component identification
i'm a college student so i cheaped out by buying a physically damaged RPi 3B+ planning to repair it myself (also as SMT soldering practice) but am having some difficulty identifying the damaged parts. ...
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Battery Information on Raspberry Pi
I am currently using PiSugar 2 Pro for my Raspberry Pi 3B+. While I know that PiSugar has its own server where you can check on battery level, I was looking for a more direct integration with the OS, ...
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Raspberry pi-4 powered usb hub backfeed issues
I have a Raspberry SC15184 Pi 4 server and I'm looking to power 3 USB peripherals each with a 3-6W power requirement (which should be 0.6-1.2A given pi-4 operates at ~5V).
This is above the 1.2A ...
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Get Measurements from Battery/Solar Setup
I'm planning a setup with an rpi3b+ and the pijuice hat (battery) and pijuice solar module. It is key to my project that I can access the following data digitally i.e. in the pi:
current power ...
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How to disable boot when plugged to power? [duplicate]
I want to disable boot of raspberry pi 4B when plugged to power
I have searched a lot and found a similar question, which gives a short and suspicious answer to this problem. If two RUN pins(holes) ...
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Raspberry PI4 usb 3.0 seems not working properly [duplicate]
I am using a Raspberry PI4 with Google Coral TPU and a Telit Lte modem both attached on USB 3.0 ports. I get a lot of "Under-Voltage" messages also using the Raspberry power supply(5.1V, 3A)...
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Raspberry PI4 + Coral TPU + Telit LTE get "Under-Voltage"
I am using a Raspberry PI4 powered by the Raspberry power supply(5.1V,3A) and I have also a Coral TPU and a Telit Lte Modem attached on Raspberry USB 3.0 Ports Hub.
According with the Coral Power ...
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3 12V DC motors on raspberry pi with L298N
Completely new to this stuff. For context, I am trying to connect 3 DC motors that probably are 12v. I haven't bought them yet, they will definitely be more than 5v. I want to be able to control all ...
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LPM raspberry pi 4B extinction mechanism
I am contacting you because I would like to know how the LPM (Low Power Mode) mechanism works on the raspberry pi 4B.
In order to take advantage of this feature, according to the documentation
put ...
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2
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Turn on pi at specific time with RTC to save battery
I'm looking into powering my raspberry pi via a powerbank. I already have a button and a relay to turn it on manually and when the pi shuts down flip the relay back to off position. Now I would like ...
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How to shut down the RPI4 for a certain time or prevent it to turn on power on booting
For my project, I access the RPI remotely. The RPI continuously powers sensors over its 3.3vdc rail. For testing & troubleshooting, I would like to cut current to those sensors for some time.
...
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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 ...
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1
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How to turn on a remote battery-operated Raspberry Pi (accessible by Wifi or SSH)?
I am running a cluster of Pi3 and Pi4. Each node runs on a battery and is powered by a solar panel, in a remote area like a farm with no grid. Pis are connected to each other by WiFi in a local ...
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Cut power supply to pi after shutdown and power on after button press
I am building a pi project that is battery powered and is powering something through the 5V GPIO. What I want the pi to do is to start up on a button press, do its thing and turn itself off again ...
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Cutting power to USB port on a RPi 3A+
I am running a Raspberry Pi 3A+ in my car as a DIY Android Auto head unit (using Crankshaft).
In order to not have the RPi immediately shutdown when you remove the key from the ignition (or have it ...
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Seagate Ext HDD Power Down
I’ve just used a Pi 3 B+ and a Seagate 2TB external USB hard drive (SRD00F2) to make a home media server using OpenMediaVault.
The drive light is on all the time, even when I’m not accessing the drive....
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The RPi 4 does not support Power Management - is it due to lack of capability, or lack of will?
It's clear enough from this Q&A and the null output from cat /sys/power/state that the Raspberry Pi does not currently support the Linux kernel's Power Management features. This explains why there ...
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Pi zero doesn't fully shut down after adding a gpio-poweroff dtoverlay to /boot/config.txt
Disclaimer
I'm still learning about the device tree in general and am definitely fumbling about a bit.
The problem
Pi Zero W draws basically zero current when shutdown with sudo shutdown now. After ...
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Maximum usage USB and GPIO power consumption
I use a raspberry Pi3B+ for a home automation installation. On which I have connected several peripherals. In particular an RFID reader and an OLED screen. But I notice that after a while, these ...
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Turning switch on lowers voltage from 5.2v to 3.0v
This is probably a simple question, but I’ve researched a lot and haven’t been able to figure out how to fix the problem.
Basically, I have a Raspberry Pi and a 5-inch LCD screen wired to a toggle ...
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Raspberry Pi Pico - how to lower power consumption
I am using a Raspberry Pi Pico to provider a pacemaker signal to a broken flip clock that needs to trigger a change every 12 hours.
As a proof of concept this works and does what it's designed to do. ...
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How to supply multiple servo motor and dc motor while using gsm module?
I've started rc plane but with internet connection instead of regular radio. My plan is using Ai-thinker A6 gsm module so I can use it as live stream camera and control servo together with blynk. ...
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External WiFi dongle goes to sleep despite power management set to off
I am running a Raspberry Pi Zero W as a headless audio player. Since the WiFi-signal in my kitchen is weak, I added an external TL-WN722N v2 WiFi Dongle which greatly improved signal strength.
My ...
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Performance of the Rasperris
The Raspberry pi 4 has a power supply that can deliver a maximum of 15.5 watts. How much power exactly does the Raspberry use without overclocking at maximum power so that I can connect the ...
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Using Relays to Power off then Cut power to Pi Zero
I have a raspberry pi zero that I am running off a battery for remote logging reasons.
There is a low battery shut off module I have connected to the battery in case the battery gets below a certain ...
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Using a SPST switch with GLOBAL_EN and GND on Pi4 B
my first post here. Thanks for having me. I've seen many posts discussing the use of GLOBAL_EN and GND for turning the Pi4 on. I'm interested in using this to turn the Pi4 OFF and leave it OFF long ...
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Change the CPU Core Voltage from terminal
I was wondering if anyone is aware of how I can change the CPU Core Voltage of a Raspberry Pi using system calls from the terminal. I know that we can do this by setting the over_voltage parameter in /...
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Power consumption of Raspberry 400 when in deep sleep via Fn-F10
have anyone measured power consumption of the newly-introduced "off" state via long-press of the Fn-F10 combination on the Raspberry 400 model?
https://www.raspberrypi.org/blog/designing-...
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Disable USB driver on RPi Zero W
I am using a Raspberry Pi Zero W running Raspberry Pi OS (32-bit) Lite (Aug 2020).
This is an IoT project where, I have a USB modem that makes my internet connection. When the modem is powered on it ...
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Which is more efficient for raspistill: `-vf -hf` or `-rot 180'? (Raspberry Pi Zero W)
According to the official documentation,
With the camera placed upside-down, the image must be rotated 180° to be displayed correctly. The way to correct for this is to apply both a vertical and a ...
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How I can control an AC 220v with a relay and a Raspberry Pi 3B [closed]
I'm a newbie in this topics. I love electronics and I love the power of the boards like Raspberry Pi and I want to learn to use it by myself learning in internet, but I have a lot of lacks of ...
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Problems with the rpi zero and relay [closed]
I Have a problem...
(above the relay-coil Datasheet)
I want to control a single relay with my pi zero, but it seems that it doesn't have enough power.
the 3.3V pin of the rpi (measured to 3.19V) works ...
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Starting Pi 4 with global_en
It seems that those pins can be used to start Pi 4, but I am not sure exactly how. Can a Pi 4 start after having been shut down by the shutdown menu, if I connect the two holes like below for a short ...
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What is the minimum power required for an RPi 4 in `halt` or `shutdown`?
I want to use a RPi 4 in a remote, unattended, battery-powered application. In this application, the RPi 4 will spend most of its time inactive, awakened only by either a Real Time Clock (RTC), or a ...
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turn a fan off when a power switch is toggled
I have added a power switch to turn on/off my raspberry pi 4. When I use this switch the fan connected still remains on. How would I add something to my script when the switch is toggled to turn off ...
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3
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Does Raspberry Pi 4 consume considerable amount of power in soft-off state?
In the Start menu (you know, the fruit button at the top-left corner), I clicked shutdown. I did not unplug the USB-C power cable. The red light was still on, but I thought it was like the sleep light ...
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