Amazon Dash button

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.

Installation

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. Because of that it only works with Python 2.7. If you want to trigger the webhook you also need requests, the mail part uses smtplib.

The script probably needs root-privileges:

sudo python2 listen.py

Run 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.