2 ms·
A light sensor on an ESP taped to the inside of the mailbox would probably work, and a note to the postal carrier informing them of its function, but I suspect
by paradox460 3y ago
A light sensor on an ESP taped to the inside of the mailbox would probably work, and a note to the postal carrier informing them of its function, but I suspect you'd have issues with the range of the device.
- rekoil 3y agoYeah, I live 3 floors up and on the other side of the building from the mailboxes.