New Lessons about Arduino battery current (German)

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Hi Friend’s,

i made this new Youtube Lessions yesterday. Maybe someone help this:

https://youtu.be/HgPdab9dY2I
https://youtu.be/LqhlWaiOd04
https://youtu.be/hwAf89NT6xY
https://youtu.be/PHvykZT5OsU

And the Playlist:
https://www.youtube.com/playlist?list=PLYPTUTcLMTK4X3rSrr3FChxNeVwrH1Kmh

Changed Sensor Code:
https://gist.github.com/xpix/f0eb31114dd7c39b5a62

Next weekend i’ll make e third lession, cuz i discover the BH1750 has also a Voltage Regulator and … tataaaa … a Powerdown mode. The “PowerSave” Adventure continues

@Frank-Herrmann
sehr informative videos!!! das thema würde mich vorallem mal beim raspberry pi interessieren. vielleicht hast du da auch ein paar tipps? meiner läuft 24/7 am netzteil - aber stromsparen ist trotzdem sinnvoll.

summary in english: whats about saving energy in case of raspberry pi?

Yo, hmm ok here some tipps from me:

• use a Raspberry A+, he use only ~ current 250mA
• don’t overclock your RPI, set to lowest MHZ as possibe (600MHz)
• don’t use too much USB Devices (A+ has only one usb )
• use a minimum RPI Image: http://sourceforge.net/projects/minibian/
• check all your running processes with top, you need everything?
• don’t use a wlan stick, connect ethernet direct
• Maybe it’s possible to let the rpi sleep and wake up with an magician packet over ethernet

So, just my 2 cents

@Frank-Herrmann said:

• check all your running processes with top, you need everything?
• don’t use a wlan stick, connect ethernet direct
• Maybe it’s possible to let the rpi sleep and wake up with an magician packet over ethernet

my questions:

1. how can i check this?
2. model a+ dont has an ethernet port
3. is it possible to start rpi at a certain time (without magic packet)

@Frank-Herrmann said:

Next weekend i’ll make e third lession, cuz i discover the BH1750 has also a Voltage Regulator and … tataaaa … a Powerdown mode. The “PowerSave” Adventure continues

Done, please check first article in this Thread
https://youtu.be/hwAf89NT6xY

my questions:

1. how can i check this?

You can call ps -aux and control all running processes for needed or not.

2. model a+ dont has an ethernet port

Sure but you can use a USB-Ethernet Adapter. Please check this one:
http://www.amazon.de/LogiLink-Fast-Ethernet-RJ45-Adapter/dp/B0019CZGZW

3. is it possible to start rpi at a certain time (without magic packet)

You can use a “Zeitschaltuhr” for 5 bucks. Or you go in hibernate state and wake up with "rtcwake"
http://unix.stackexchange.com/questions/167398/can-you-make-a-linux-system-halt-and-boot-my-raspberry-pi-at-certain-times

@Frank-Herrmann
thanks a lot!!!

Please check the first article in this Thread. The last lession exists in this Playlist: https://www.youtube.com/playlist?list=PLYPTUTcLMTK4X3rSrr3FChxNeVwrH1Kmh

We save a lot of current and at the end, the Sensor node will 2.22 Years run