Questions tagged [power-supply]

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

81 questions with no upvoted or accepted answers
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773 views

Unable to shutdown Raspberry connected to UPS

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
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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/...
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0answers
149 views

Best Way To Power Raspberry Pi Zero and External 4.5 - 36v Circuit

I am creating a drone where I have a Raspberry Pi Zero, and a Motozero. I need to supply the Motozero with power from 4.5 to 36 volts as well as the Raspberry Pi Zero. What is the best way to do ...
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0answers
260 views

Undervoltage icon (bolt) with ATX power supply

I had two cellphone chargers in parallel (5.1v - 2A each one) and the Raspberry show me the yellow bolt. I know that this icon means undervoltage so I replaced the chargers with an ATX power supply ...
2
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0answers
801 views

Sense HAT not working on RPi 3 correctly with official power supply

I have a Raspberry Pi 3 model B. I was using a 5.25V 2A power supply that I used for my previous Pi 2 (which made the red light flash because it didn't provide enough power) until last week, when the ...
2
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1answer
94 views

rpi kind of turns off (not accessible by ssh / vnc, red light on), var/log with regulatory domain

I am using a rpi3 with an external usb disk and a 3A power source, but the system seems to turn off after 1-2 days of normal use. I know that because I cannot access it (ssh or vnc), but there is a ...
2
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1answer
149 views

Despite having powered USB Hub, Raspberry Pi 2+ doesn't detect Seagate 1TB HDD anymore

I'm trying to set up a raspberry pi 2+ as an always on torrent box. I had it set up one time and it was working, but then when I turned it off and on again it froze on start up. After flashing the ...
2
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0answers
124 views

Computer PSU 5v Output direct with Raspberry Pi USB

I'm using an old power supply unit from an old computer (2011 HIPRO) to power my Raspberry Pi. I have measured the voltage across the terminals of the 5v output (Red and Black) and have proceeded to ...
2
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0answers
598 views

Ext. HDD I/O Error - suspends, power issues?

My external USB HDD becomes repeatedly inaccessible after a long time of usage/idleness. The same thing happened before with a very old disk and I thought it was just failing. But I do have the same ...
2
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1answer
982 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 ...
2
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1answer
130 views

I cannot run rpi 3 from 8 battery (14500)

I cannot run rpi 3 from 8 battery (14500) Series circuits 29.6v. I am convert 29.6v through dc-dc converter (XL4005 DSN5000) to 5v. The converter output can be 5A. But I cannot take more than 0.5A ...
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45 views

Use MacBook charger for Raspberry Pi 4

I am using the official 15.3W USB-C Power Supply to power up my Raspberry Pi 4. I got my self a second Raspberry Pi 4 but I haven't bought the power supply yet. Would I be able to use the Macbook ...
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26 views

UPS for Pi 3B and hdd

I'm quite new to the Pi world, but I need a UPS unit to power both a Raspberry Pi 3B and a 2.5'' hard disk used by the Pi. I thought a power bank could be the right choice for me, but I cannot find a ...
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30 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 ...
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1answer
131 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 ...
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153 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, ...
1
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2answers
34 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 ...
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0answers
143 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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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 ...
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0answers
33 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 ...
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2answers
138 views

Single power supply to RP3 and Adafruit Motor Hat

I have a project that includes a RP3 and an Adafruit motor hat (https://www.adafruit.com/product/2348), with 2 5v stepper motors (https://www.adafruit.com/product/858). In the guide they state the ...
1
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1answer
320 views

Monitor Displaying “No Signal” with RetroPie at Powerup

I'm in the process of building a game console using RetroPie and a Raspberry Pi 3. I'm connecting the Pi to a monitor via HDMI, and I'm powering both using a power strip with an on/off switch, to ...
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1answer
1k views

Raspberry Pi Low Power Warning

RPi Model B+ Raspbian 7.11 Kernel 4.14.41-v7+ I've been getting low power errors during startup (lightning bolt), and continue to see them in my syslog. I have tried multiple different USB cables, ...
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0answers
227 views

Hardware setup for LED with external power supply

I am looking for help to use a raspberry pi 3 as a multiple LED switcher. The setup should be: 6 LEDs at 3W, 9.6V and 300mA (each!) a external power supply for the LEDs a breadboard to put everything ...
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1answer
582 views

Powering 12v and a Pi from the same battery

I'm building a game that contains: rpi (5v) 2x 9g micro servos (5-6v) 5m RGB led strip (12v) Right now I use 3 different sources: 4xAA battery packs (6v) for the servos 8xAA battery pack (12v) for ...
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0answers
35 views

Pi rebooting on 1 specific apt-get installation

I am experiencing a very peculiar problem with my Raspberry Pi 3 (model B V1.2), running the latest version of Raspbian (the June 2017 version). Whenever I try to install nginx using apt-get, my Pi ...
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2answers
752 views

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 ...
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0answers
52 views

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 ...
1
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1answer
223 views

Raspberry pi screen resolution and power supply

My RPi screen resolution is lower when I power it from a mobile charger than when I power it from a power supply. When I use the power supply it gives a different (higher) resolution. I checked the ...
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19 views

Is there any accessory available which can help me draw power from two different sources?

I want to draw power from wall and also use my power bank as a backup power source, I want to flexibility to remove any of the power source without shutting it down. I really dont want to chain the ...
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0answers
613 views

Portable MP3 Player

The project is a small as possible MP3 player using the Raspberry Pi Zero. I understand the software side, but have a question about compatibility of hardware. For input/output I will be using the ...
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0answers
520 views

Raspberry Pi B+ power-supply and USB problems

I have two Raspberry Pi B+. One of the two is rather unstable (details below) and I would like to understand if it is just a defect or if I might have broken it so that I can avoid making the same ...
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0answers
66 views

What did I fry on my RPi 1 B?

I seem to fried something on my RPi 1 Model B by connecting a 12V source instead of a 5V source to the micro-USB port. When I now connect it to a power supply, the PWR LED turns on and nothing else ...
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0answers
590 views

Raspberry pi 3 power supply and HDMI

I have a small robot centered around the Raspberry pi 2 driving through a DFRobot Romeo (aka Arduino). When developing I have been drawing power from the USB connections on both the Arduino and ...
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0answers
31 views

USB power doe Arduino

How good is the power regulation on a RPi 2 ? I have a small robot controlled by an RPi2 and some Arduinos, and have two choices to power it (the Pi, that is). I can make a dedicated 5V regulated ...
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0answers
394 views

Measure input voltage of Raspberry Pi B+ running Ubuntu

I just learned that a red flashing LED indicates voltage below 4.63V on a Raspberry Pi Model B+. Thus, the Pi seems to "know" about it's input voltage. So my question is: Is there a command to ...
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0answers
670 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. ...
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0answers
524 views

My Raspberry Pi is turning off after about 3 minutes. Any ideas?

I've tried using different cables, different cards, power supplies, different HDMI cables even ... but my Raspberry Pi just shuts down after about 2~3 minutes. I tried with different power supplys (...
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14 views

Powering the Raspberry 3 B+ with PSU

I have a PSU from Amazon that provides 5V and I used my trusty multimeter to adjust the voltage to exactly 5.0V. I used it previously to run some silent fans, but I don't have any use for that anymore ...
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1answer
55 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 ...
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0answers
26 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 ...
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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 ...
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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.
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30 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 ...
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1answer
42 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'...
0
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1answer
109 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 ...
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0answers
213 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 ...
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112 views

RPi 3b+ portable battery concern: enough voltage?

For starters, I am trying to use this power pank as a portable battery for my robot: https://www.costco.ca/PocketJuice-12%2C000-mAh-Portable-Charger-.product.100416339.html I connected the pi to ...
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0answers
53 views

Possible to Power an IP camera from Pi

I have a raspberry pi 3 b+. I was thinking instead of using an USB camera or the camera module would it be possible to connect an IP camera? The raspberry pi will be powered by a battery and the pi ...
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4answers
134 views

Power Requirement for Pi 3

I have a Raspberry Pi 3 Model B, and I wish to make a tablet with it. I am using the WaveShare 7inch touchscreen, the pi camera V1, a USB hub and an external CD/DVD drive. But when I got everything ...