Say goodbye to unnecessary trips to an empty mailbox with a notification system that sends alerts and updates the mailbox status within Home Assistant.
We’ve added a microcontroller, LiPo battery, two resistors, and two microswitches to the mailbox. One switch detects when new mail has been inserted into the mailbox slot, and the other detects when the mailbox has been emptied.
More details, Arduino code, wiring diagram, and a bill of materials can be found in our blog Upgrade Your Mailbox for Smart Snail Mail Notifications