presence detection - wifi via arping
1 March, 2014 - 18:54
Okay heres my first attempt, just add the names and mac addresses into the table and your good to go. tested on Rasp PI after installing arping (sudo apt-get install arping)
lets see if this works for the apple stuff..I suspect they will stop responding on standby but time will tell!
Garry.
-- Presence detection via wifi
module(...,package.seeall)
require("xap")
require("xap.bsc")
require("string")
info={
version="1.0", description="Presence Detection via Wifi"
}
local endpoints = {GarryPhone = "xx:xx:xx:09:33:1B", GarryIpad = "xx:xx:xx:xx:82:BA"}
function Detection(timer, self)
local msg = "arping -c 1 -i eth0 -q "..self.address
-- print("msg"..msg)
retval = os.execute(msg)
if (retval == 0) then state = "on" else state = "off" end
self:setState(state)
self:sendEvent()
timer:reset()
end
function init()
for k,v in pairs(endpoints) do
k = bsc.Endpoint{instance="Presence:"..k, direction=bsc.INPUT, type=bsc.BINARY, address=v}
xap.Timer(Detection, 60, k):start(true)
end
end
2 March, 2014 - 10:23
#2
Garry what type of iPhone do
Garry what type of iPhone do you have?
As I said in the other thread, my wife's 4S responds to WiFi pings when asleep but my 3GS does not. I use both arp-scan and l2ping in a python script to detect presence and switch on bluetooth on the 3GS.
Incidentally, I use the return code to increment an absence counter or reset it to 0 if a zero return code is received. This works OK-ish for longer absences but I don't think it's ever going to be able to switch a light on when I return home because it's just too slow a respone.
6 March, 2014 - 19:38
#5
Looks good
Because I use the raspi to do the detection at the moment and then fire the result off in a UDP packet I don't bother with actual times. I just increment a tick on the HAH and reset it to 0 if I get a hit on WiFi (or bluetooth on my 3GS). As you say OK for detecting longish absences for dealing with heating etc. but not much use for lights.
I was going to play with geofenced reminders on SWMBO's iPhone to see if I could generate anything useful (perhaps via IFTTT) but I'm not sure she's too happy with me knowing when she's arriving and leaving!! I'll have to wait a while until I inherit her phone :-( so it probably won't be anytime soon!
8 March, 2014 - 16:29
#6
arping
Garry
I had to use the IP rather than MAC address and use arping rather than arp-scan but working fine here.
Thanks for the code
Mark
well I shouldnt be surprised!. iphone doesnt respond to arping on standby.
have installed arp-scan (sudo apt-get install arp-scan) on the Pi and modded the scripts as follows to see if this is any better? NOTE HEX mac address needs to be lower case.
-- Presence detection via wifi
module(...,package.seeall)
require("xap")
require("xap.bsc")
require("string")
info={
version="2.0", description="Presence Detection via Wifi"
}
local endpoints = {GarryPhone = "xx:xx:xx:09:33:1b", GarryIpad = "xx:xx:xx:xx:82:ba"}
function Detection(timer, self)
local msg = "sudo arp-scan 192.168.0.3-192.168.0.20 |grep "..self.address
-- print("msg"..msg)
retval = os.execute(msg)
if (retval == 0) then state = "on" else state = "off" end
self:setState(state)
self:sendEvent()
timer:reset()
end
function init()
for k,v in pairs(endpoints) do
k = bsc.Endpoint{instance="Presence:"..k, direction=bsc.INPUT, type=bsc.BINARY, address=v}
xap.Timer(Detection, 60, k):start(true)
end
end