Questions tagged [power-supply]

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

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1answer
2k 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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2answers
20 views

Raspberry Pi not booting - red power light, no ACT light

I shut my RPi3 Model 3B+ down earlier with sudo shutdown now, and while it was shutdown, but not disconnected, we had a power outage. When the power came back on, the Pi would not start. The red power ...
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1answer
31 views

How should I power multiple RPi 3 units from a beefy power supply?

I have to power 20 Raspberry Pi 3 units from a few 5V 10A power DC power supplies. I have little experience in electronics. The RPis can be up to 1.5m apart from one another. A friend of mine ...
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1answer
43 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 ...
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1answer
21 views

Raspberry Pi B don't start

I try to boot from Rasbperry PI 1B version 2011.12, but it only shows the Red light but nothing happen. I try difference OS with no luck. The problem is the power?
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1answer
38 views

Keep running Pi while charging batteries [closed]

I would like to build a simple automatic irrigation system with Pi zero, the thing is that I don't have access to electricity outside. I thought to connect 5v solar panel + 3\4 chargeable batteries. ...
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4answers
50 views

power troubleshooting

I am trying to power a raspberry pi 3 over a long distance (5 meters). I can power the raspberry pi with the standard power supply from Raspberry Pi itself, but when I use these: https://www.digikey....
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3answers
2k views

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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3answers
33 views

Best voltage for a Raspberry Pi 3B

I have 5.0V 3A and 5.2V 3A regulated supplies that I can repurpose for my Raspberry Pi 3B project. Am thinking of using the USB power jack. Which should I go with? 5.2V would seem to be within the ...
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1answer
35 views

Can i run my raspberry pi 24x7 with the solar power bank? [closed]

I wanted to run the pi with a pi cam and internet module for 24x7 for lifelong, can i do that if i am using a 10000mah solar power bank https://www.amazon.in/dp/B07DB5FT9H/ref=...
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3answers
67 views

Running Toy Motor circuit with Pi's 5v

I am currently going through the tutorials included with those kits that you can get for the Pis with breadboards and components, etc. Anyway, in the tutorial, I am making the following circuit: In ...
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6answers
31k 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 ...
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1answer
148 views

Pi 4 maximum power consumption

What is the maximum theoretical power consumption of Pi 4? I had expected that I would be able to find some sort of specification table for that, but I could not. The only things I could find were ...
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1answer
245 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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4answers
164 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 ...
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1answer
42 views

Can I use 12v and 8amp battery with L298 motor driver

Can I use 12v and 8amp battery with L298 motor driver with raspberry pi model?
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1answer
51 views

external power supply [closed]

Using Rpi4. Using camera and IR lighting. Would like it to be powered by rechargeable batteries. What are my options.. I have found 'holding cases' for AA batteries but only for Raspberry 3s. I have ...
0
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2answers
59 views

Under-voltages while powering a Pi 3A+ via the +5V/GND pins

I need to power my Pi 3A+ via the pins (not the onboard micro USB) so I can put the power connector anywhere I want in my custom box. I have a separate micro USB female connector connected via two ...
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0answers
16 views

Buttons connected to uart including standby/power button

I have a electronics project (32x32 Pixel led panel) with a raspberry pi as computing unit. This device has a self made PCB with holds 2 voltage regulators, one for the onboard micro controller (atmel ...
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2answers
929 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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1answer
72 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'...
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2answers
264 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 ...
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3answers
52 views

Power Raspberry Pi 4 with a phone charger [duplicate]

I've got a phone charger that delivers 4.5 A at 5 V (Huawei SuperCharge), which should be enough to power the the Pi 4. Can I use this charger or do I have to buy the original one? Thanks in advance
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1answer
96 views

Power Raspberry Pi 4 (4GB) In any Car [closed]

Hey , so here's the dilemma , I want to use My yet-unused Raspberry Pi 4 (4GB) in my car , providing it works , as it seems this one was from the first batches manufactured and people reported it ...
2
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1answer
76 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 ...
0
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1answer
76 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 ...
2
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1answer
100 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 ...
0
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1answer
134 views

Pi b+ power issues?

I have a raspberry pi b+ with raspbian stretch. My power adapter is rated at 5v 1.5 amp. I have a monitor and network cable connected, USB keyboard, USB mouse and 2 USB cameras connected via the 4 USB ...
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1answer
244 views

Official 7" Display not functioning correctly

The first day I had the display, it booted fine, loaded and worked just fine, however I had a little bit of flickering from the screen. Today I tried to boot again and the screen comes up with some ...
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1answer
392 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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3answers
20k views

Can I power a Pi through a 5V pin?

The PIN mapping of the Raspberry 2B says: The red ones are 5V pins. Are these just used as 5V out pins when power is connected through Micro USB? Or is it also possible to power the Raspberry Pi via ...
2
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1answer
162 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 ...
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1answer
53 views

Can raspberry pi4 connect to 2 2.5inch laptop harddrives with a 5v2a power supply?

I have two spare laptop hard drives and I want to use them with my raspberry Pi4. I wonder if a 5v2a power supply enough to make them up and running. If a 5v2a power supply wasn't enough, which kind ...
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1answer
196 views

How many amps does a pi with 11 sensors need?

I have received so much support from this community by reading already answered questions. But now I got one that hasn't been asked yet. I have nearly a dozen sensors connected to my pi 3 so it's only ...
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1answer
43 views

Is it possible to control the 5V supply (e.g. pin 4) via python?

I want to (de)activate a fan, which is connected to the pins 4 and 6, depending on the temperature of the CPU. Is it possible to (de)activate Pin 4 (or Pin 2) at the Raspberry Pi 4 via python? I have ...
0
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1answer
180 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 ...
0
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1answer
34 views

How can I expand the 5V pins?

I require 2 more 5v pins to be used - as I would like to avoid welding the 4 wires directly to the 5V pins, I wanted to know if it would be possible to expand those pins. I would require a small ...
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1answer
1k views

lightning bolt on first powerup

I purchased the CANAKIT Raspberry pi with the Canakit power supply. I purchased the pre-loaded microsd card. On first power up I got the rainbow and the lightning bolt (no menu) I've tried 3 alternate ...
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1answer
47 views

What happens when power goes off suddenly?

I have a pi 4. While running it, the electricity was gone.After electricity was back, it was working perfectly. What can happen if this sort of power cut occurs multiple times?
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1answer
481 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
48 views

Is it safe to power Raspberry Pi 4 with 8V?

I have a ESC control from an RC car similar to this one: and although it says it has a UBEC of 6V, I measure 8V when I supply the ESC with two 18650 batteries in series. I want to supply my Raspi 4 ...
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2answers
755 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
37 views

Isolate Raspberry pi from power supply on shut down

Ok Team I need to know if this circuit will work or if there is a better way. Use Case: I have a piece of machinery that is controlled via a Raspberry pi zero W. It just controls a relay board to ...
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2answers
478 views

How Much Current for GPIO Power Supply?

I'm working on an audio project where the Raspberry Pi will be powered off the GPIO. I was trying this using an LM7805 voltage regulator to get 5v from the 9v power supply that is standard in a lot of ...
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2answers
252 views

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 ...
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1answer
145 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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1answer
43 views

How to power Rpi4B and 12V solenoid at the same time?

i'm new in raspberry pi. i want to parallel powered my raspberry pi with 12 v and 5 amp, because i want to powered not just the raspberry pi. i want to powered a solenoid too that run in 12 volt and ...
2
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1answer
34 views

Wifi not connecting depending on power supply

I am using a RPI 3 B+ with a Touchscreen. It worked for almost a year but since 2 weeks the pi is no longer connecting to wifi. The adapter is there, I can even select my wifi, enter my password but ...
5
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2answers
695 views

Raspberry Pi 4: turn red LED off (via software)

I have an RPI 4 in my room. When I sleep the red light fills a big part of the room. I don't want to turn the pi off as I want 24/7 availability. Its ability to be quiet and always available is why I ...
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1answer
2k 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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