Raspberry Pi - Network Spy Energy Saver

RE: Raspberry Pi - Network Spy Energy Saver

e14 Contributor — Wed, 13 May 2015 01:45:42 GMT

That is cool and all, but doesn't the Pi use more energy being on monitoring all the time than the speaker would in the first place?

RE: Raspberry Pi - Network Spy Energy Saver

e14 Contributor — Mon, 30 Mar 2015 16:15:35 GMT

Cool Project , new to this technology and very interested at the age of 63

RE: Raspberry Pi - Network Spy Energy Saver

Matt — Mon, 30 Mar 2015 08:37:21 GMT

I've updated the PHP code after a few problems we had at the weekend.. it turns out that the arp scan sometimes doesn't see a device, i.e. the Chromecast dropped off the network momentarily, which ended up turning off the subwoofer for a minute, then it went back on again. I've added in some code that tracks the power status over each cycle of the program.. so in this case, I've said that the Chromecast needs to be off for 3 cycles/minutes before it turns the socket off.

This is actually really useful for switching a socket based on whether your mobile phone is in the house. I previously wasn't able to use this script, since the phone's wifi enters power save so often, disappearing and reappearing all the time. With the status monitoring, I can say that if the phone hasn't appeared for 30 cycles/minutes, then turn the socket off.

RE: Raspberry Pi - Network Spy Energy Saver

mcb1 — Sat, 28 Mar 2015 09:47:31 GMT

Neat idea Matt.

This searching for things has some other benefits as well.

Thanks for sharing

Mark

RE: Raspberry Pi - Network Spy Energy Saver

shabaz — Fri, 27 Mar 2015 11:50:30 GMT

Hi Matt,

This is a really great idea! Very effective : )

Very neat trick to know when the TV is on by using the Chromecast device.

Slightly related to your network scan, I hope to sometime consistently ping a location on the Internet, so I can start getting a picture of how often the DSL line is down for maintenance or other issues affecting Internet reachability. Not decided if I want it to beep or log to a file or something..