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In the past couple days I've looked at a lot of different
implementations. I'm not willing to spend the time to determine
whether that one suffers the same issue that keeps the other
scapy-dependent implementation from working here. IMO <a
href="http://www.arpalert.org/arpalert.html">arpalert</a> is an
excellent tool for this application.<br>
<br>
-Pete<br>
<br>
<div class="moz-cite-prefix">On 07/23/2016 04:42 PM, Rodney Radford
wrote:<br>
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cite="mid:CA+kfaxHHMUHbLdXR=ewk0QnNN6b9wagPW0atsGKTc-FsqECC9g@mail.gmail.com"
type="cite">
<div dir="ltr">Pete,
<div><br>
</div>
<div>Have you seen this method that simply relies on the ARP
requests by MAC address? Similar to where you are heading, but
this is already complete and appears ready to us..<br>
<br>
<a moz-do-not-send="true"
href="https://familab.org/2016/02/hacking-the-amazon-dash-button-to-make-a-simple-cheap-iot-place-anywhere-networked-button-3/">https://familab.org/2016/02/hacking-the-amazon-dash-button-to-make-a-simple-cheap-iot-place-anywhere-networked-button-3/</a><br>
</div>
<div><br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, Jul 23, 2016 at 4:02 PM, Pete
Soper via TriEmbed <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:triembed@triembed.org"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:triembed@triembed.org">triembed@triembed.org</a></a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">OK, after
wading through some cosmically complex implementations of
"detect the button push" and finding the trivial Python
program of the seminal how-to involving baby diaper use only
works in my house for the very first button press, I
wondered if these things would respond to pings while
they're winking and blinking. They do. Then I wondered if
they remember to request the same IP address over and over.
They do. So, in my house, where the DHCP environment is very
stable for the main LAN, I can arrange for a completely
reliable mapping of button to IP address. So I can just use
the shell script below for a trivial means of detecting a
button. The script puts no measurable load on the computer I
tried it on. I'm arranging a proper scheme that keys off MAC
addresses to be immune to DHCP behavior using arpalert, but
in the meantime I thought the group might find this script
amusing. (I'll publish the arpalert-based scheme when I've
worked out some patches to that code to get a few issues out
of my face and some utilities to automate the process a
bit).<br>
<br>
To use this little script I I set up a button as usual and
either use the diaper-logger's Python script or simply look
at the router's admin interface to see the IP address
dispensed. I then put that in my /etc/hosts file with a name
and use that in the script below. Making this script general
(e.g. taking the IP and text/action as parameters) would of
course be the next step with this approach. Anyway, this
script might be of interest to folks that just want to play
vs installing scapy or a hundred Javascript modules. I'
about 99 3/4% sure this would work on Windows using Cygwin.<br>
<br>
One interesting side effect of setting up a bunch of buttons
is that my phone is simply filled with reminders about the
fact that I never selected a product for each button. So I
would add to the usual instructions out on the net "after
setting up the last button, uninstall the Amazon app!"<br>
<br>
#!/bin/sh<br>
<br>
while [ /bin/true ] ; do<br>
<br>
ping -w 1 -c 1 gatorade1 >/dev/null 2>&1<br>
<br>
if [ $? -eq 0 ] ; then<br>
<br>
echo "You can get your own Gatorade" | espeak --stdin<br>
<br>
# make sure we don't double trigger<br>
<br>
sleep 10<br>
<br>
fi<br>
<br>
done<br>
<br>
<br>
-Pete<br>
<br>
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