Questions tagged [power-supply]

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

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159 views

External power supply to servo motor [closed]

The servo motor(I'm using MG996R) needs lots of power to run through the raspberry pi board power supply. so I decided to supply it externally using an SMPS box. when the servo is connected to 5v of ...
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2answers
1k views

Power Pi4 with USB-C Power Bank

Can a USB-C Power Bank be used to power a Pi 4 for off-grid or mobile uses where the Pi cannot be tethered to either a mains electric socket or a POE switch?
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96 views

Can I power up the PI with the LDO MIC29300

I am using the MIC29300 https://www.microchip.com/wwwproducts/en/MIC29300 in my circuit to generate a 5V signal to my ADC (works fine now) Would it be possible to grab that 5V line and have it ...
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1answer
166 views

Torrentbox Hard Drive keeps unmounting when copying files. How to avoid it?

My external hard drive is connected to a powered usb hub (5v 3000mA) then connected to rpi3. Whenever I copy any file that would take more than 30 sec, it would unmount and I have to mount the next ...
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1answer
224 views

Power Supply Raspberry pi 4

I have googled a lot but didn't find anything useful. Can I use any power adapter other than the official Raspberry Pi supply? Moreover, I have an Argon One Case and many people have recommended ...
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1answer
8k views

Cut GPIO power on shutdown

I'm developing a project where I have a button connected to the Raspberry Pi GPIO where it sends shutdown command when pressed for 3 seconds. I also have a 16x2 LCD that outputs status messages. When ...
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3answers
72 views

I've got this mobile charger and I'm wondering if I can use it to power my pi4. If so, what should I look out for when buying a usb2-usbC adaptor?

I've got this mobile charger and I'm wondering if I can use it to power my pi4. If so, what should I look out for when buying a usb2-usbC adaptor?
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2answers
6k views

Will an anker powerport+ work to power multiple pi's?

I'm not an electrical engineer so apologies for the rather basic question. I've found myself with multiple pi's and felt it was about time to look for some other power solutions other than powering ...
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2answers
216 views

Can you connect a power supply in series/paraellel to 5V & Ground GPIO pins

I am controlling a stepper motor and an LCD screen from one raspberry pi. Originally, the motor and screen were powered from the 5V output pin on the raspberry pi. I found that this would draw too ...
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1answer
135 views

Power off Raspberry Pi if charger of powerbank is connected and turn back on if disconnected

I have a (maybe trivial) problem. I want to power a Raspberry Pi (more specific a SteroPi) with a power bank. The power bank has the feature, that its output is always on. So even if I plug in a ...
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3answers
3k 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 ...
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1answer
58 views

Raspberry 3+ b and two external usb drives: lack of current

I've encountered the following problem: when I connect 1 external usb hdd to my Pi, everything works fine. But when I connect second one with the same characteristics, both drives are not usable. I ...
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1answer
421 views

Powering difference between different Raspberry Pi 4 models

Raspberry Pi 4 has three models which have 1GB, 2GB, and 4GB of RAM. Is there any difference between these models for powering?
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1answer
613 views

5v/12v power source/submersible water pump/RPI/relay. What kind of combination is suitable?

I am using a 12v DC water pump with a 20 l/min flow rate, a raspberry pi 3B and a distance sensor. I would like to use a relay and an external power supply to control turning on/off the water pump. so ...
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3answers
5k views

safeness of using 18650 + battery casing for raspberry pi

I am planning to use a 18650 battery and a casing like below to run a raspberry pi zero W outside on my watch, but I hear bad stories about lithium ion batteries, like 18650, exploding on a regular ...
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43 views

Beginner help setup

I've set up my rasberri pi4 month or so ago and tried to restart but stuck on screen with color stripes please help
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1answer
56 views

Small, Rechargeable LiPo and RPi 4B

I've started a new, more specific thread, here. I'm looking for a way to power my Pi 4B inside a 3d-printed laptop project (nothing has actually been started yet), and it would be great to hear what ...
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0answers
77 views

Raspberry Pi alternative with low power mode? [closed]

The Pi has no low power mode. That's a shame. Is there anything like the Pi that does have a low power mode? Is SleepyPi or switching to ESP32/Arduino the only way?
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480 views

3.5 inch HDD case/rack with separate USB connection?

I want to build a NAS with RAID 1 using two 3.5 inch HDDs. I want to connect the HDDs via USB. Thus I'd need two cases for the HDDs with two separate power supplies. Cases/Racks with two HDD slots ...
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1answer
5k views

Raspberry Pi - 4 blinks

I'll start by saying that I probably shorted something to cause this. I noticed this behavior the next morning after spilling some water next to it. I didn't think any got on it through the holes in ...
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2answers
189 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
57 views

Raspberry pi3 power supply

I want to buy a power supply that is good both for my PIC16 environment (breadboard with 3.5V - 5V power bank) and for my raspberry 3PI. Than I choice a 5V 3A power supply with a USB exit from Amazon:...
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1answer
4k views

Can I use my S7 edge charger for my Raspberry Pi 3 Model B?

I have no charger atm and I am a bit strict on money right now. Anyways, I have a spare Samsung charger and it has 2 values. 9V = 1.67A 5V = 2A It's a fast charger so I don't know what applies to ...
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0answers
42 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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2answers
124 views

Power Raspberry Pi using GPIO Pins and a 10A supply with 7805

I am currently working on a project where i have micro-controller,stepper drivers etc all powered through a single 12v 10a power supply. I was planning to use the same supply to power the raspberry pi ...
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7answers
101k views

Will any external battery power a Raspberry Pi?

I am working on a project that needs the Raspberry Pi to work without a mains connection. I have considered buying a 50000mAh USB power bank. Would this power a Raspberry Pi, and if so, would it ...
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1answer
291 views

Raspberry Pi external power supply for sensors

I am working on a project that involves a Raspberry Pi 3B+ and multiple sensors (temp/humid DHT22, pH probe and EC probe from atlas scientific, cameras....). I am trying to figure out how to power my ...
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2answers
707 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 ...
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1answer
223 views

Supply 5v to peripheral using solder pads and not GPIO?

This seems like a simple enough question but it hasn't been easy to find an answer! I have a Pi3 (with recommended PSU), official screen, official camera and I've now added the respeaker 2-mics Pi ...
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2answers
61 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 ...
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1answer
85 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 ...
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1answer
81 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 ...
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7answers
4k views

Powering Raspberry Pi 3 from another Raspberry Pi 3

Is it possible to power a Raspberry Pi 3 directly from another Raspberry Pi 3 that is powered from a Micro USB socket. I understand there is a 5v rail and I am thinking that linking the 5v rails ...
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1answer
125 views

Power Raspberry Pi and charge Adafruit FONA from same source

I have 12v leisure batteries hooked up to solar panels, I want to be able to power my pi (5V 0.7A max) and charge the Lipo battery for the Adafruit FONA (5V 2A max) for a combined 2.7A max (i think) ...
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1answer
63 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....
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0answers
37 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
729 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 ...
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1answer
3k 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 ...
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15answers
623k views

How do I turn off my Raspberry Pi?

Should I just pull the plug? Or is it best if I exit LXDE and any other running processes first?
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1answer
1k 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 ...
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1answer
83 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 ...
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1answer
88 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 ...
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8answers
9k 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 ...
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2answers
99 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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2answers
103 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 ...
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2answers
2k 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'...
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1answer
115 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 ...
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1answer
300 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 ...
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0answers
432 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, ...
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3answers
3k views

Using a quickcharge power brick to run a Pi 3

I usually use my phone power brick (rated at 5v 2.5Amps) to run my Pi 3 and it works fine for the most part. Now I bought a new phone which supports something called fast charge. So the power brick ...

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