All Questions
21 questions
1
vote
1
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550
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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?
- 29
-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 ...
- 101
1
vote
1
answer
69
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....
- 21
0
votes
2
answers
958
views
Do I need a on and off button for my power supply?
I purchased this power supply https://www.raspberrypi.com/products/type-c-power-supply/. It’s the official power supply so I thought it would be good. Now I am hearing all these stories about what ...
- 115
0
votes
0
answers
18
views
Powering a Pi 4 with a small power bank [duplicate]
For my project SamplerBox, I had done many extensive tests in the past and it was possible to successfully power a RPi 2 for multiple hours with such a small 2600mAh power bank (18650-battery inside), ...
- 792
0
votes
3
answers
195
views
Is there any advantage powering up a RPi 4B with a PSU rated for 8A @ 5V?
I have a Raspberry Pi 4B 4GB RAM variant that will be running 24/7 with the following attachments:
an ethernet cable leading to a router for internet connectivity
a 2.5" external HDD attached ...
0
votes
0
answers
43
views
Turning switch on lowers voltage from 5.2v to 3.0v
This is probably a simple question, but I’ve researched a lot and haven’t been able to figure out how to fix the problem.
Basically, I have a Raspberry Pi and a 5-inch LCD screen wired to a toggle ...
- 101
1
vote
0
answers
191
views
How to power PCA9685
I am using the RP 4B and am trying to control a servo with the PCA9685. Unfortunatelly I am very new to all that and therefore I don't know which specific components I need to power it up. I bought a ...
- 111
0
votes
1
answer
246
views
pi 4 - Power present
I am using a pi4 and pijuice.
Is it possible with a script or python to check if power is present in my Pi4?(usb port)
I am using my pi4 headless with as a web server(online). I would like to know ...
- 127
0
votes
1
answer
249
views
What power supply can I use for 2 servos?
I am a complete noob when it comes to raspberry. I have 2 servos MG996R that I need to power from an external power supply. Currently I am doing it from the board, and when I turn both of them the ...
- 101
0
votes
3
answers
3k
views
Use a usb-c charger with variable voltage for charging Pi4 [duplicate]
I have read here that is possible to charge you pi4 with 3rd party chargers that supply 5V 3A.
I am wondering if I can use this 20W charger, which can deliver differnet voltage level (5V/3A, 9V/2A, ...
- 1
0
votes
0
answers
630
views
RPI connected to a smart plug -> how to auto turn off plug after RPI shutdown?
In short:
I was wondering if it is possible to send a command to a smart plug when the pi is good to kill it's power.
background
I'm running a 3d printer which I'm going to control with a rpi 4 using ...
- 101
2
votes
1
answer
2k
views
Powering Raspberry Pi 4 'on the move' using power bank [closed]
There are good official resources that state that recommended power supply must be 3 amps (e.g. official RPi power supply via mains). However, for use 'on the move' or remote locations this may not be ...
- 21
3
votes
1
answer
205
views
Can RPi 4 deliver more amps on the 5 volt rail than RPi 3 powered over PoE?
I have a setup using a Raspberry Pi 3B.
I use the PoE hat on top and I power the entire setup over PoE from a Unifi switch.
The setup has quite a lot of peripherals that need power and I use the 5 ...
1
vote
1
answer
592
views
Powering multiple Raspberry Pi 4s with 65W USB-C computer charger
Is it possible to power up multiple raspberry pi's with 65W USB-C computer charger? If so, is there anyone who have done it, that they can share how they did it?
- 13
1
vote
3
answers
149
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?
- 11
16
votes
2
answers
15k
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 ...
- 383
2
votes
1
answer
146
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 ...
1
vote
0
answers
806
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, ...
- 196
30
votes
6
answers
82k
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 ...
- 483
19
votes
1
answer
62k
views
Powering the Pi 4 - safe voltage levels and current requirements
How to safely power the Pi 4, more specifically:
What voltage levels are safe to power the Pi 4 via the USB-C connector or via the GPIO header?
What are the current requirements?
What Power ...
- 15.9k