The script listen.py registers ARP-packets in the local network.
If you enter the MAC of your Amazon Dash button it registers if the
button is pressed. It can act on this event with a request to a ITTT
webhook (ITTT maker channel) or by writing a mail using a
Gmail-account.
Activate your dash button with the Amazon smartphone app. You do not need to select a product to order. The script will register if the button is pressed even if no product was selected.
The script uses scapy to sniff the ARP-packets the button sends when
connecting to your wifi. Scapy is available for Python 2.7 and Python 3.x.
If you want to trigger the webhook you also need requests, the mail
part uses smtplib.
The script probably needs root-privileges:
sudo python listen.pyRun the script without any modification. It will list all unrecognized
MAC addresses in ARP packets. Your router will answer all the packets
so its mac address pops up many times. Press your button and note the
MAC that pops up next. If you are unsure which one it is: it is not
harmful to press the button more than once. After noting the MAC of your
button and router insert those in listen.py. The addresses listed there
are mine - just replace them.
Change the code so it fits your needs. For ITTT you need to change the
URL for the webhook so it matches your key. If you want to mail directly
change the Gmail settings in send_mail.py.
Run listen.py again. It now prints Button Pressed! every time you
press your button.
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