search

tkurki / marinepi-provisioning

Ansible provisioning scripts to set up a Raspberry Pi for marine use
Apache License 2.0
45 stars 22 forks source link

Turn off hdmi to conserver power #21

Open tkurki opened 8 years ago

tkurki commented 8 years ago

https://glframebuffer.wordpress.com/2013/08/28/raspberrypi-how-to-turn-off-hdmi-from-raspberry-pi/

hkapanen commented 8 years ago

Is this only about conserving the power of an attached monitor, or do you know if it also reduces the power consumption of the Pi's video core? If the latter is true, then this would make sense to headless setups as well.

joux3 commented 8 years ago

This discussion would hint at less power being consumed for headless setups. Anybody care to measure it?

tkurki commented 8 years ago

Yep, power saving in headless setup was the point here. The issue description was pretty minimal, sorryyyy.

hkapanen commented 8 years ago

OK - I can see a benefit in order of 10mA (0.28->0.27A) on a headless RPI3 idling on a WLAN. No more digits available from my el-cheapo USB power meter.