Questions tagged [power-supply]
The methods for powering the Raspberry Pi (typically via its micro-USB connection.)
568
questions
2
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2answers
27 views
Can I power two Pi from a single Lithium battery?
I need to run at least 2 Pi together, one controlling hardware and another sensing its environment. I would like to keep weight down by using a single LiIon battery. I have one to connect to a PiJuice ...
-2
votes
2answers
28 views
Is L293DNE Dual H-Bridge Motor Driver Chip/Board also a 5V voltage regulator/converter to power the Raspberry Pi itself?
Have been reading many articles showing how to connect DC motors to the Raspberry Pi and of course a DC Motor Driver Chip/Board is needed to come between DC motors and the Raspberry Pi GPIO Pins to be ...
2
votes
1answer
54 views
USB-C to USB-C Cable Recommendations for Pi 4
Based on the USB-C implementation issue in Pi 4 rev. 1, I'm looking for recommendations on a non e-marked USB-C cable to use for power. Having dug through my own cable stash, I've found a couple of ...
0
votes
1answer
63 views
Regularly power up an autonomous Raspberry Pi? (e.g. once a week)
I want to power a Raspberry PI from a power bank, which should give me - according to various sources on the Internet - 30 to 70 hours of operation.
How can I power up the Raspberry Pi once a week to ...
1
vote
0answers
27 views
Reboot issues when plugging other devices into power
Model: Raspberry Pi 3b+
Raspberry pi 4.19.66-v7+
Raspbian Buster July 2019 edition
Offical PSU.
I have an Arduino uno powering off one of the USB ports on the PI. Nothing else attached.
I have my ...
3
votes
1answer
41 views
How to power on multiple LED through 3.3V rail ? (Power supply problem)
I'm trying to use the 3.3V rail to power up 10 LED (20mA/LED).
I read that the raspberryPi could supply until 1A through this 3.3V rail, that's a lot more than needed when all the LEDs are powered on....
0
votes
1answer
52 views
Reporting undervoltage, accidental reverse voltage
I've got a raspberry pi 3b+ mounted in my wall with the official 7″ touchscreen, and after some time i noticed the symbol in the top right corner notifying that it does not get the voltage it's ...
1
vote
1answer
160 views
How to choose a power source for Raspberry Pi 4?
I bought a R-Pi some days ago.
We all know raspberry pi needs 5V 3Amp to operate. I have these options for the power source:
I have an SMPS (Detached from a Desktop PC) which have 5 V and 15 Amp ...
2
votes
1answer
32 views
powering raspberry pi zeroW via computer usb port
I ran out of wall plugs for the Pi and I would like to power a zeroW via a USB port from my laptop. There are 2 microusb ports on the zeroW should which 1 should I use, the one near the edge or the ...
1
vote
1answer
44 views
Whether using a 3.4 Ampere adapter or Qualcomm QC 3.0 adapter to power a Raspberry Pi 3B+ can cause damage? [duplicate]
So here it goes,after looking out hundreds of pages regarding powering of Raspberry Pi 3B+ still some hesitations here.
I have totally read this out very detailed & nicely written answer by ...
1
vote
1answer
93 views
Can a Raspberry Pi 4 be used as USB gadget but draw power from elsewhere?
Assuming that the Raspberry Pi 4 is attached as a slave to emulate different devices/gadgets using the USB OTG functionality available on the USB-C port: Is it possible to power the Raspberry from ...
1
vote
1answer
106 views
Compute Module 3+ Power supply
I am designing power supply for CM3+ board and got few questions.
I decided to use 2 LDO's (3V3 and 1V8 outputs both from 5V usb VBUS).
Wanted to ask if its good solution or maybe connect 1V8 to 3V3 ...
0
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0answers
25 views
RPi 3B power supply and external USB Hub issue
I am building a project with a custom USB hub attached to one of the RPi USB ports. On the custom hub I attach 7 USB devices powered by their own batteries.
The custom USB Hub is equipped with an ...
1
vote
2answers
44 views
The best way to connect the 7” touchscreen
I have a pi 3 model B+ and the official raspberry Pi PSU, and the official 7” touch screen. I’m running Raspbian with all the latest updates.
I have connected the display using a USB cable as ...
0
votes
2answers
55 views
About Power supply for Pi 4b [duplicate]
I have bought Pi 4b but now I don't wanna buy separate power adapter for it, I already have 5V,4A power adapter of my smartphone so can I use it for Pi 4b also??
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vote
2answers
294 views
powering the RPi 4 + a 2.5" HDD with 1 power adapter
Ok, so here's the problem:
I want to build a RPi 4 machine for gaming. From what I've read, if I want to attach a 2.5" HDD via usb 3.0 to the Pi 4, it will have to be powered somehow, since the Pi won'...
0
votes
1answer
101 views
Pi 3 w/Pisound - Won't turn on unless wait a few minutes
I have a Pi 3 and Pisound (hat) and to turn it off I just unplug the cable. Now oddly, if I plug it back in right away I just get a red light, no blinking yellow BUT If I wait a few minutes to plug it ...
1
vote
0answers
110 views
power supply for multiple raspberry pi4
I am wondering if any one knows of a power supply that will power 4 or more raspberry pi4 with the type C plug? (Yes I would like the full 3 amps or more)
I thought of a standard ATX power supply, ...
0
votes
2answers
67 views
Voltage drop when RaspberryPi boots
Im trying to learn robotics with raspberrypi but im having a problem. I have 6 AA batteries in a batteryholder that are connected to a breadboard and with M-M jumping wires its connected to a LM2596S ...
3
votes
1answer
64 views
Powered USB3 Hub vs USB3 Y Power Cable
I have an issue that means I have to use a powered USB hub for the HDD that is attached to my RPI4 (long story). The hub just broke.
My budget doesn't allow for a decent powered USB3 hub BUT does ...
2
votes
2answers
305 views
Power Rasberry Pi Zero W using LiPo 11.4V and 7805 converter
In order to power a Raspberry Pi Zero W, I'm using the 7805 converter to lower the ~11.4V from a LiPo Battery to 5V. The resulted voltage is about 4.96V.
The Raspberry Pi starts to boot for about 20 ...
0
votes
0answers
47 views
RaspberryPi is not provided with enough power
Im trying to learn robotics with raspberrypi but im having a problem.
I have 6 AA batteries that are connected to a LM2596S adjustable voltage regulator module, Which then is connected to the ...
2
votes
1answer
78 views
Battery Usage Pi Zero W for video stream
I am trying to do live video streaming from the rasberry pi, meaning the camera is recording a video and then transmitting the live video over wifi.
What is the smallest battery I can use to power ...
1
vote
2answers
32 views
do RPi3 3.3/5V pins output constant voltage even if the RPi power supply is changing voltage?
I want to power my RPi with a lithium ion battery. The RPi will be powering some devices which require constant voltage to power them.
If I use a battery as supply for the RPi (which changes as it ...
0
votes
1answer
271 views
Can I supply power with 5V 2Amp to Raspberry pi 4 [duplicate]
Can I supply power with 5V 2Amp to Raspberry pi 4? Currently 5V 3Amp chargers by Raspberry Pi are out of stock , so I am using phone charger with 5V 2Amp along with Type C adapter.
3
votes
2answers
71 views
Should I tear apart USB PSU or get a dedicated switching PSU?
I'm going to be using an Pi-3B+ to switch an AC and a DC device using one of the popular relay modules. This whole project is going to go in a custom screw-together project box that will have AC input ...
1
vote
2answers
135 views
Powering a Raspberry Pi without a micro USB cable
I want to attach a Raspberry Pi to hardware I'm developing. There is already +5v and GND available on the hardware. Is there any way to power up my Raspberry Pi from this (I just wanna avoid another ...
2
votes
1answer
147 views
How to make a splitter cable for the USB2 OTG port on the RPi 4B?
According to the answer to Where is the USB2 OTG port on the RPi 4 Model B located? the Raspberry Pi 4B has a "hidden" OTG port in the USB-C power connector. I found at Very simple OTG on pi4 and at 4 ...
4
votes
2answers
486 views
how does the Raspberry Pi PoE shield work?
I would like to do PoE for some Pies, but I dont like the real-estate the PoE hat takes up. what exactly is required for the PoE to work? what pins must I use on the raspberry PI, and what does the ...
2
votes
2answers
96 views
Convert 12V to 5V to power RaspberryPi
I have an Eleksmaker laser cutter which has a board with a 12V output (see top of image).
I would like to power my RaspberryPi using this 12V output.
What is the advantage of powering the ...
0
votes
0answers
25 views
Location of Voltage regulator on the pi-star zero
My pi-star is overheating and turning off. I was told that it may be the voltage regulator. Is this possible and where is it located or do you have a schematic for the pi-star.
8
votes
5answers
4k views
Choosing a Pi4 power supply
I'm trying to decide what is the best option for powering a Pi4. The specs mention for a minimum of 3A. Let's consider we would also like to connect a 2.5" drive to the Pi4. Could someone more ...
2
votes
1answer
3k views
Powering the Pi 4 - safe voltage levels and current requirements
How to safely power the Pi 4, more specifically:
What voltage levels are safe to power the Pi 4 via the USB-C connector or via the GPIO header?
What are the current requirements?
What Power ...
2
votes
1answer
779 views
Raspberry Pi 4 with Anker PowerPort Speed 5
So I'm thinking of getting a Raspberry Pi 4 and I know they have raised the power requirements to 5v 3amps, rather than buying the offical power supply would using the two blue fast charge ports on my ...
13
votes
8answers
7k views
What is the highest voltage from the power supply a Raspberry Pi 3 B can handle without getting damaged?
I am using Android things on Raspberry Pi 3 B with a 7-inch touch screen. Currently, I always see a yellow thunder bolt sign on the screen which means that the Raspberry Pi isn't receiving a high ...
3
votes
5answers
898 views
How to monitor if a remote Rpi freezes and reboots it, using a watchdog timer or otherwise
I'm building a system with a raspberry pi located in a very remote area connected to internet with an internet stick. The tests are promising so far but the pi freezes every here and then and I'm not ...
0
votes
0answers
28 views
LCD Installation freeze because of low voltage?
i try to install my LCD 3.5 waveshare, but when extracting the folder and use sudo ./LCD35-show it starts shortly and then freeze. I Got the thunder icon and the freezed screen. Might this be the ...
3
votes
2answers
113 views
Power up a raspberry pi in a plane
Just wanted to know if it was possible to power up a raspberry pi 3 (+7'' touch screen) from the USB socket you can find next to the screen in a plane. I have no idea how much power they provide...
1
vote
2answers
70 views
Pi Remains Running When External (Powered) HD is connected
I have a Pi3B+. Attached is a (powered) Western Digital My Book external hard drive. When I accidentally unplugged the power to the Pi, it kept running, happy as can be with the only other energy ...
0
votes
1answer
35 views
USB OTG with power supply connection to Raspberry Pi Zero
I have connected my 5.2 V 2 A tablet charger to power USB port of Raspberry Pi Zero and USB port to my Linux OS Lenovo laptop, according to this post I must cut the 5 V pin of USB PC port, but I didn'...
2
votes
2answers
202 views
Raspberry Pi Zero W solar power setup
Good day,
I have a Raspberry Pi Zero W that I would like to deploy onto a tower that is supplied with 12VDC power from a photovoltaic solar panel.
I'm currently looking at powering the Pi Zero W ...
1
vote
0answers
134 views
Safely connect Adafruit's powerboost 1000C LBO to rPi-GPIO
I would like to connect Adafruit's powerboost 1000C LBO control pin to a rPi GPIO-pin. So I can gracefully shutdown my rPi when the LiPo runs low.
I would like to connect the LBO to a diode to lower ...
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vote
0answers
29 views
can low power be the cause of low WiFi speed?
I'm using a raspberry pi 2 model b running Ubuntu core, and a TP-Link TL-WN821Nv3 USB WiFi adapter, which has a maximum speed of 300mbps/37.5mBps, and a Samsung charger which supplies 2A (lower than ...
0
votes
1answer
105 views
Power Pack for RPi 3
Is there a popular ups power shield that can be used to with RPi 3?
Ideally I would like to write some code in Python to monitor the battery status of the power pack and also still have access to the ...
1
vote
1answer
89 views
Raspberry Pi Shows Low Power Lightning Bolt When Only Using 1 of 3 Amps
My Raspberry Pi 3B+ is running Kali Linux on the official 7" display. I am using an Anker power bank that says: "5V=6A (3A max per port)" in the description. When using the Pi, it constantly shows the ...
0
votes
0answers
182 views
HDMI port is not working
I have been using an RPI3B+ for around 2 months . I used it remotely most of the time. Recently, when I was trying connect it with a monitor via HDMI to VGA converter , it didn't work at all. I ...
2
votes
1answer
135 views
part incompatibilities
I am trying to control a 4.5V motor with a pi.
I am going to use this to control the motor:
https://www.ebay.com/itm/2X-L298N-Dual-H-Bridge-DC-Stepper-Motor-Driver-Controller-Board-Arduino/...
2
votes
2answers
74 views
Powering Rpi won't boot using custom microusb and supply
I'm attempting to power my Raspberry Pi with my own power supply. As you can see from the picture, that is the micro usb I have modified to connect to my power supply. However, when I connect it to my ...
-1
votes
1answer
61 views
Powering a line following robot with a power bank. Any thoughts?
I am currently wondering for a college project, if it'd be possible or not to use a power bank to build a line following robot and power both the pi 3b+, the waveform motor driver hat with 2 dc motors(...
1
vote
0answers
30 views
Long term screw terminal power
Okay so I have a PCA9685 hooked up to a raspberry pi 3 so that it can control multiple servos via a c++ program. Currently, I have them hooked up to a battery pack that has red and black wires as gnd ...
