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Questions tagged [power-supply]

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

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Powering Raspberry Pi 5B with li-ion battries: Pi 5 just won't boot, stops booting mid-way

I've been pulling my hair for a couple of weeks now. Changed batteries, changed BMS, changed step-down module. No avail. I am trying to run RPi 5B with 4 li-ion cells in 2S2P config. 2S2P -> BMS -&...
44yu5h's user avatar
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28 views

Advice needed on how to connect a 12V solenoid valve to a Raspberry Pi

I'm a begineer to using the Pi and want to build a simple watering system for some plants. I know there's lots of online articles but looking for some clarification on exactly what is needed. Here's ...
bzo's user avatar
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2 answers
20 views

Powering the Pi and 6 accessories?

I am wrapping up my first Raspberry Pi project. The final version needs to control 3 28BYJ-48 stepper motors and 3 hall effect sensors. In my PoC (with a single motor and hall effect sensor), I have ...
Kiran Panesar's user avatar
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1 answer
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Video glitching and gpio pin problems. Faulty Pi or low voltage?

I have 12 externally powered neopixels connected to one of the gpio pins of my RPi3B+ which in turn is powered by a (supposedly) 2.5A power supply and hooked up to a small 1024x600 LCD display (...
Jkh2's user avatar
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Using a Raspberry Pi Pico on a motorcycle lights/blinkers: how to power and use I/O?

I'd like to build a "smart" blinker for my old motorcycle, as the original one can't handle LED bulbs (not enough power consumption) and also i want to increase functionality. It should keep ...
Parduz's user avatar
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49 views

Can't power RP4 from same active hub the peripherals are connected to

I'm building something NAS-like with a RPI4 Model B Rev 1.2 and 2 hard disks. I'm using an active hub for the hard disks and wanted to power the RPI4 from it as well. Here is how I wanted to wire it: ...
felher's user avatar
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1 answer
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Raspberry Pi 5 can't boot up with AA batteries [closed]

I have a Raspberry Pi 5 and a 12V power supply using AA batteries. I'm using an HW468 regulator to step down the voltage to 5V at 5A. I'm supplying this power via the 5V output and GND of a Type-C ...
İlteriş Samur's user avatar
2 votes
2 answers
580 views

Underclock / tune Raspberry Pi 5 to keep 2 amps power supply limit

As the minimal requirements for Raspberry Pi 5 is 5V / 3 amps, better 5 amps, this is a very unusual supply on USB-C with not so many options to find a matching supply (despite the recommended one). ...
dronus's user avatar
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-2 votes
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RPi zero W auto power up / down by available power

I want to run a RPi Zero W on a crude solar panel and battery or supercapacitor. I understand the pi has an input range of 80-120A or so, and needs a minimum of just 2 volts. This makes it ideal for ...
Jodes's user avatar
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Pi Zero and Pi with UART connected: crash on linked device power on

I have a Pico W running some app, and I use a Zero W to log (via UART) what is going on for debugging purposes. The Zero W is configured so that UART0 is the primary UART, and the UART pins are ...
cheersmate's user avatar
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Powering a RPi 4 a 6V Peristaltic motor (~4mA) and 2 12V Peristaltic motors wired to 8 Relay module from 12V variable power supply

I am creating a smart garden panel basically which is incorporating a RPi 4 as the brains and has 3 peristaltic motors. 2 of which are 12V and 1 is 6V which draws about 4mA of current to run, this is ...
J Dubb's user avatar
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1 answer
382 views

How to power a Raspberry Pi 4 through usb c or gpio pins?

Hello everyone I am running into some kind of problem. I want to power my Pi 4B+ through the GPIO pins via a buck converter but it just wont work. I used the LM2596 non adj 5V buck. In its typical ...
Luuk Benningshof's user avatar
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Spec for the power requirement of a Raspberry Pi-3

I am using a Pi-3 with a relay board to control my gate. The gate doesnt have the facility for automation, so I have the relays, effectively pressing the buttons on a remote. The Pi, relay board and ...
Rohit Gupta's user avatar
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34 views

Raspberry pi Zero W reboot after USB is disconnected/connected

I am using raspberry pi 3b+ and Zero W and a Waveshare 7 inch capacitive touch display. I am trying to turn off the back light of the display in various following ways in both the Pis. So if the turn ...
Aryan's user avatar
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Phone charger power supply for raspberry pi 4

I have a Motorola power supply with output: 5v 3a 15w or 10v 2a 20w or 12v 1.67a 20w. My question is: can I use this power supply for my raspberry? Or is there a risk that it could be burned or ...
Juani Zappulla's user avatar
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1 answer
70 views

Servo freezes after continuous activity

I have a Miuzei MG90S 9G Micro Servo connected to a Raspberry Pi 4. I am powering the servo through the Pi's 5V pin. The Pi itself is powered by the CanaKit 3.5A USB-C Raspberry Pi 4 Power Supply, ...
Stepan Parunashvili's user avatar
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52 views

Raspberry stuck with red light (no green light) after trying to connect with 7inch display and GPIO

I bought a Raspberry 5: I run the first configuration and everything seems to work. in the past, I had purchased the official 7-inch display for a Raspberry 3: however the display cable (the flexible ...
Danilo's user avatar
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UART Issues without USB Power

I'm experiencing an issue with UART communication when I attempt to power the RPi over the 5V pin instead of the USB port. Here's a rudimentary look at my setup: RPi 3B -> Teensy 4.1 GND -> GND +...
Joshua Taylor's user avatar
1 vote
1 answer
362 views

Alternative Power Supply for Raspberry Pi 5 with 67 watt

I don't know why, but my original Raspberry power supply doesn't work anymore. I found a power supply at home, but it provides 67 watt instead of the original 27 watt. Is this a problem or could using ...
Jakob's user avatar
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1 answer
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How to safely power PI Zero 2W from external supply via +5V and allow USB connectors to be used

There are other posts indicating that bad things can occur if you are providing 5V from the external connector and plug in a USB cable with its own 5V supply. Various solutions have involved cutting ...
Chris Morgan's user avatar
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Is the Raspberry Pi 5 Power Supply Compatible to the Pi 4

I need a new power supply for my Pi 4. Somewhen I will use a Raspberry Pi 5, but it needs the quite special Raspberry Pi 5 power supply. Is the Raspberry Pi 5 PSU (officially) compatible to the ...
Cellcon's user avatar
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2 answers
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What is used to power the Raspberry Pi 4B?

Just got a Raspberry Pi 4B, 4 GB, (first time), and have been having fun trying to figure out what it takes for power. According to the extension kit I got, Raphael Ultimate Kit for Raspberry Pi, it ...
Blue Skin and Glowing Red Eyes's user avatar
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Connecting 40+ transmitter coils to Raspberry Pi

I am currently working on a school project to make the wireless charging platform from scratch but with more surface for originality. My current design requires 42 transmitter coils and these coils ...
Martin's user avatar
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-1 votes
1 answer
78 views

Quick way to maxise power usage on the RPi Pico without external HW?

I'm looking at powering a Pico over USB and I'd like to temporarily boost input current high, hopefully beyond 200 mA, certainly beyond 100 mA. What's a good way, programmatically, preferably from ...
Tomislav Nakic-Alfirevic's user avatar
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21 views

Ground offset when powering devices directly from 5VDC transformer

I am reading in current sensor (ACS712 20A) values using the MCP3008 ADC into my rpi zero. I am also using a Songle SLA-05VDC-SL-C relay, and have found that both the current sensor being on, and ...
Jonas's user avatar
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1 answer
45 views

Undervotage detected while using UPS hat (b) on wheel robot

I am doing a mecanum wheel robot project included 2 motor drivers l298n. I use raspberry pi 4 GPIO to control the motor drivers and my power supply for rpi is an UPS hat (b). I keep receiving ...
Phạm Phương Nam's user avatar
1 vote
2 answers
119 views

Power Pi 4 from Viewsonic touchscreen

I have a Pi 4 connected to a Viewsonic Touchscreen monitor. The monitor has a USB C output that the monitor user manual shows being used to power a laptop. I am trying to use this USB C output (...
David G's user avatar
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2 answers
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Raspberry Pi Zero - 5 or 5.1 volts?

I am doing a little project where I power Raspberry Pi Zero from motorcycle battery (even when the bike is running). I have a step down converter which is set to 5V between the battery and Pi. But I ...
jsfrz's user avatar
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2 votes
4 answers
658 views

Controlling and Powering 12v LEDs

Disclaimer: this is my first PI project, and at the moment I have only a basic knowledge of circuitry, so please be gentle. I'm looking to construct a device using a PI 3B+ that'll be housed outdoors ...
Pete's user avatar
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4 answers
121 views

Can I use this power supply?

Abandoned post by Unregistered user. The maximum power supply for a Raspberry Pi 4 is 5V/3A but here I have a 5V/3.1A power supply. Can I use this power supply? Will I fry my Pi 4? Below is a ...
Anonymous's user avatar
1 vote
1 answer
316 views

Can I use this fast charger for my Raspberry Pi 4? [closed]

It is a fast charger and says 5V/10W and also says 45.0W MAX? Please help me out. I don't know what to do. Will it destroy my Pi 4?
Anonymous's user avatar
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4 answers
200 views

Can I let my RPi power off randomly?

I am placing my Raspberry Pi 4 in an embedded application on my boat. I am using a PICAN-M HAT to provide both connectivity to the NMEA2000 backbone, as well as power to the Pi (5v 3A). The NMEA2000 ...
ToastySailor's user avatar
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0 answers
46 views

Raspberry Pi Camera feedback freezes when moving NEMA 17 stepper motor with A4988 stepper motor driver

I have a Raspberry Pi with a camera module and a NEMA 17 stepper motor connected to it. When I run the command ffplay /dev/video0, the video runs perfectly. However, whilst the video is running, and I ...
Broteen Das's user avatar
-1 votes
1 answer
42 views

Does Pi draw more power when GND is connected to pin 16?

Strange question perhaps, but I was wondering if anyone knows if a Pi would in theory consume more energy when the GND pin is connected to pin #16? I have an interactive piece of software running on ...
dongle's user avatar
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-1 votes
2 answers
69 views

Can my charger power Raspberry pi 4?

I am new to Raspberry pi and I wonder do I need to buy a charger because in my country they cost a lot and when I examine my charger I saw that 5V 3A and I thought Raspberry pi 4 charger is 5V 3A too. ...
Erdem Durukan's user avatar
0 votes
2 answers
710 views

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?
SURESH BHATI's user avatar
1 vote
1 answer
60 views

Powering RPi 4B via USB-C Intermittent

The USB-C port on one RPi 4B is not making a good connection. If I apply side pressure to the USB-C power cord, the connection is made, and the RPi powers up, but when I release pressure it dies again....
myeager's user avatar
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-1 votes
1 answer
80 views

Raspi can'to connect to Wifi with Power Suply ~5.3 V via USB-C

"I have a PSU that delivers ~5.3 V on USB-C. With this PSU, my Raspi does not connect to the Wi-Fi network. However, with another PSU that delivers ~5.1 V, the Raspi connects without any problems....
Mike Mitterer's user avatar
-1 votes
1 answer
269 views

Undervoltage with 5V 5A PS

I know this is a subject that is exaustive and at risk of sounding ad nauseam I have to ask because I have no solutions. My pi is reporting undervoltage. I haven't ran into this since using a Pi1 ...
addohm's user avatar
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0 votes
0 answers
61 views

Separating power in Pi Zero when using the Pi as a HID that must be working without shuting down

I asked an AI: When you use raspberry pi zero w as a HID, is it necessary to connect the pi to a machine via a single micro usb cable, for the power and the data connectivity? Does that mean that ...
丶 Limeー来夢 丶's user avatar
-3 votes
1 answer
285 views

Which micro usb port if preferable to power pi zero?

Pi zero w has pwr micro usb and normal micro usb. Both of them can be used to power the pi. What is the safest way to power pi zero w, via pwr micro usb or data micro usb?
VextoR's user avatar
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1 vote
0 answers
46 views

RPI fails to boot after reboot; ok after unplug

Four of my five Raspberry Pi boot flawlessly upon sudo reboot; one fails. This RPi, but none of the others, has a Hifiberry Amp2 mounted on the GPIO header. I suspect for the below reasons that the ...
Al_'s user avatar
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2 votes
3 answers
733 views

Powering Pi 4B with dead PMIC

One of my many Raspberry Pi 4's in one of my clusters recently broke down. After some troubleshooting, I was surprised to find out, that the power circuit on the board was actually toast. I have no ...
Caeleste's user avatar
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3 votes
0 answers
166 views

External hard drives keep getting unmounted

I have an OpenMediaVault NAS on top of the Raspberry Pi OS Lite set up on my Raspberry Pi 4B. I have two 1 TB Toshiba HDTB410XK3AA hard drives connected to the Pi through a powered USB hub. Now I am ...
bisarch's user avatar
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1 vote
1 answer
129 views

Is my Raspberry Pi original?

I recently bought a Raspberry Pi 4 Model B. This is the first time I have bought a Raspberry Pi. As per my understanding, the recommended power supply is 5.1V / 3A. I am using a different power supply ...
Yogesh Yadav's user avatar
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0 answers
55 views

Current draw Raspberry Pi 4 measurement results. Does anyone have more data?

I thought this would help with designing HAT power. Does anyone have similar measurements while running software and connected devices? Scant information on the current draw. I measured through the ...
JSP's user avatar
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2 votes
3 answers
1k views

How to support the power supply of servo motors using an ordinary AC-to-USB adapter?

I normally power my Raspberry Pi Pico via a USB connection to my computer. However, when working with servo motors, the motors can draw quite a bit of power, destabilizing the USB communication ...
normanius's user avatar
  • 123
2 votes
2 answers
5k views

Power Pi Pico by applying 5 V to VSYS—any experiences with or thoughts on additional safety measures?

The official Pico datasheet chapter 4.5 suggests using either a Schottky diode or a P-channel MOSFET (P-FET; or a combination of both) when powering the Pico from an external power source (at least if ...
Manuel Popp's user avatar
1 vote
3 answers
410 views

RPi can't boot up from battery, needs to be connected to USB-c then while the battery is connected disconnect power supply USB-c

I have noticed that my Pi will not boot from a battery (supplying 5.26v Raspberry Pi 4 Model B) unless I first start it up from the USB-c power supply and then connect the battery power supply. My ...
monkey's user avatar
  • 21
0 votes
2 answers
233 views

Powering GPIO-interacting sensors with external 3V3

I am using a Raspberry Pi Zero, with an x706 PSU hat (2 x 18650 batteries). The X706 PSU is charged by a good quality, stabilised 5V power supply unit providing up to 3A. The Pi is hooked up to many ...
de_a's user avatar
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