This project aims at providing a mailbox notifier when it s opened (presumably by the postman). It relies on LoRa technologoy where the transmitter located in the mailbox sends a LoRaWAN alert to the receiver located in the house and set a LED on. If the house has WiFi, it then push a SMS (using Twilio free SMS API) to the desired recipient to warn him that he has a mail waiting for him in the mailbox.
For a full context understanding, please visit:
https://www.youtube.com/watch?v=VwmAAkHYImQ&ab_channel=antoinekeller
Problem to solve
Hardware
When the mailbox is opened
| Arduino Pro Mini | SX 1276 |
|---|---|
| 13 | SCK |
| 12 | MISO |
| 11 | MOSI |
| 10 | NSS |
| 9 | RST |
| 2 | DI00 |
| A0 | Door switch (not SX1276) |
| ESP32 | SX 1276 |
|---|---|
| D19 | MISO |
| D23 | MOSI |
| D18 | SCK |
| D5 | NSS |
| D14 | RST |
| D4 | DI00 |
| D13 | LED (not SX1276) |
I used Twilio for my SMS API https://www.twilio.com/
Many other companies offer similar service for free.