For a project I'm trying to lower power consumption of a Pi4B to potentially power it with only 500mA via a USB2 port of a computer.
- With some modifications to the bootloader its possible to get all cores into low power on HALT (POWER_OFF_ON_HALT=1)
(See https://raspberrypi.stackexchange.com/q ... r-shutdown)
- However how could I achieve the same but with individual cores? Eg. switch all cores into low power but one?
- From what I know a /boot/cmdline.txt maxcpus=1 normally won't do the trick as the cores still consume power.
Any hints on how to achieve this? Thanks a lot for your support!
If I can't achieve this with the PI4B a plan b could be a 3A+/3B+, but it seems the PI4B is the better choice regarding low power (viewtopic.php?t=257144#p1568134).
A zero wouldn't fit the project.