New answers tagged

0 votes

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

Edit /boot/cmdline.txt and add maxcpus=N Where N is in range 1 to 4.
Russell Hankins's user avatar
0 votes

Raspberry Pi 5 can't boot up with AA batteries

It may be that the USBC/3.0 of the Pi needs to talk to the power supply; not hearing anything back from the PS it doesn't boot. https://forum.contextualelectronics.com/t/can-you-pull-current-from-usb-...
Clóvis Fritzen's user avatar
0 votes

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

There are lots of 3A supplies. The Pi5 will quite happily run on a less powerful supply (provided it outputs a well regulated 5V - which many aren't because they are designed to charge batteries where ...
Milliways's user avatar
  • 60k
0 votes

RPi zero W auto power up / down by available power

I've done the same thing: running an RPi from a battery charged by a solar cell. Due to the fact that the only way to achieve zero power consumption is by removing power (true for all RPi), I designed ...
Seamus's user avatar
  • 22k
1 vote

Pi Zero and Pi with UART connected: crash on linked device power on

You might be creating a ground loop with that extra gound wire between the two boards. They already share a ground via the shared USB power supply so it's not needed.
hexbugger's user avatar
0 votes

external power supply to sensors

Well, there's layers to that. If your power supply does supply 2A it should be ok, but most "cheap" ones won't go over even 1,2A or so. Also be careful with the USB cable you use to supply ...
Clóvis Fritzen's user avatar
0 votes

Helping the Raspberry Pi to work on a weak USB power supply

Generally speaking such USB on TVs are not really designed to offer higher currents to loads connected to it. That said what you need is an external power supply with a decent USB cable (yes, that is ...
Clóvis Fritzen's user avatar
0 votes

SOLVED Raspberry Pi external power supply for sensors

Do you have an ammeter? what you could do is separate all sensors from the Pi and measure their current first; then measure the current of the Pi itself. Also if you have a voltmeter please keep an ...
Clóvis Fritzen's user avatar
0 votes

safeness of using 18650 + battery casing for raspberry pi

Bad quality batteries exist, I would really recommend if you buy them from Aliexpress get the expensive ones (at least not the cheapest); same goes for the BMS and boost circuits (try and research the ...
Clóvis Fritzen's user avatar
0 votes

Unable to shutdown Raspberry connected to UPS

Shutting down your Pi via script should be simple, like in https://stackoverflow.com/questions/20851174/raspberrypi-shutdown-script or Shutdown the Pi at the end of my python script using cron? I have ...
Clóvis Fritzen's user avatar

Top 50 recent answers are included