Linked Questions

1 vote
1 answer
174 views

Raspberry Pi Low Power warning when connecting without USB cable

I'm trying to connect power to Raspberry Pi 3B+ directly without USB cable, as in this question. I've tried both connecting the 5V and GND extension pins as in this answer and connecting to PP2 and ...
levsa's user avatar
  • 121
1 vote
1 answer
611 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 ...
Pritish Pandit's user avatar
1 vote
1 answer
1k views

Using Both +5V GPIO Pins for More Current?

According to this website: https://pinout.xyz/pinout/pin2_5v_power# The +5V GPIO pins can push up to 1.5A of current, and are attached directly to the Pi's power supply. My question is, if I use ...
Tim Morris's user avatar
1 vote
1 answer
1k views

Risks of powering short LED strip directly from GPIO

I am trying to understand the simplest ways to power a short LED strip of 30 WS281x lights. Most of the instructions I’ve found mention using a separate power supply for the LED’s, but is it ...
charliesneath's user avatar
1 vote
1 answer
14k views

What is the max voltage that the Raspberry Pi can handle over the USB plug? [duplicate]

I've been trying to make my own lower-cost power supply for the Raspberry Pi (my cellphone wall adapters don't provide clean enough 5V power for the Pi 3B+) with a 12V wall wart I have laying around ...
ifconfig's user avatar
  • 127
1 vote
1 answer
469 views

Sharing network drive with raspberry pi

I'm considering the purchase of this external hard-drive to mount on my raspberry pi : src : https://www.amazon.co.uk/WD-Elements-Desktop-External-Drive/dp/B00JT8AJZ0/ref=sr_1_3?ie=UTF8&qid=...
blue-sky's user avatar
  • 327
1 vote
1 answer
313 views

Supply voltage 5V issue from Raspberry Pi 3

I have a sensor connected to a Raspberry Pi 3 and I see some variations of the signals which is not expected. These variations seems to be due to the supply voltage 5 V from the Raspberry Pi. ...
Giovanni's user avatar
1 vote
1 answer
244 views

Cooling fan causes shutdown

I'm using Raspberry Pi 3 with 5V/2.5A input. I'm going to do heavy work with Rasp (so need to cool CPU). Today I bought 5 V mini fan for my Raspberry and plugged to GPIO pins 4 and 6. While ...
user70's user avatar
  • 113
1 vote
1 answer
370 views

Uninterruptible Power supply for PI 2 B+

Will it be possible to provide short term power to the B2+ model with the following setup? 5V 2A 44W Uninterrupted Power Supply Alarm System Security Camera Dedicated Backup Power Supply 6-10 Hours ...
ccpizza's user avatar
  • 421
1 vote
1 answer
254 views

Where to connect PWR_LOW_N?

We're developing a compute module board, and added the undervoltage circuit. Unfortunately, I cannot find where to PWR_LOW_N is actually connected. I have found some saying it's connected to GPIO 35 ...
Tomas Svitil's user avatar
1 vote
1 answer
3k views

No effect when I set 'max_usb_current' in /boot/config.txt on a Raspberry Pi 3

I want recharge my iPhone from my Pi 3 Model B's USB port. In /boot/config.txt, I have set max_usb_current=1 This does not seem to have an effect any more. Why is this?
乐森林's user avatar
1 vote
1 answer
862 views

Arduino powered by rpi3

I hooked my Arduino UNO to one of the USB port of my rpi3. The Arduino itself power a small light sensor, later on i plan on adding LCD display, LEDs, etc Can the pi handle it without any fuss ? My ...
Wadaane's user avatar
  • 163
1 vote
1 answer
174 views

Why does my Pi 3 Model B with HAT DAC run fine on a 4V Lithium battery?

Everything I have read about the Raspberry Pi 3, model B says that it will not run reliably on anything below 4.6vdc. I have a Pi 3 and I am running it at around 4V DC with a single 18650 lithium ...
Jiminy's user avatar
  • 11
1 vote
1 answer
906 views

Output/Input Voltage/Curent of RaspberryiPi 3 B [duplicate]

I looked everywhere but i didn't found a good answer. I'm looking for the specifications of my RaspberryiPi 3 B because i need to connect it with many sensors like LDR sensor or Distance sensor (...
Aziz zeGeek's user avatar
1 vote
1 answer
693 views

Voltage and Current for the Pi [closed]

There's a heap of these questions, so before you mark mine as duplicate I'll try and explain how mine is different. I don't really know too much about voltage and current, wattage, resistance or ohms....
yeeeeee's user avatar
  • 35

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