Mailbox Notifier

Completed

STD Mailbox Notifier

Arduino

Communication

Sensor_Module

License: Public Domain

Mode:

Editors' pick

Update time： 2024-10-27 09:02:34

Creation time： 2024-10-01 13:49:45

Description

LoRa modulation is used in many applications, like LoRaWAN or Meshtastic. Another application, a LoRa 1:1 link, can be beneficial because it inherits all the good properties, like long distance and low power. It is simple, does not need an infrastructure, and can be used bi-directionally. Because I want to build a long-range bidirectional mailbox notifier, I will evaluate a few LoRa boards, connect them to an ESP32 and an ATTINY1614, and finally integrate them via MQTT into Home Assistant.

You will find the description in videos:

https://youtu.be/jXi5lgOuPNc

and

https://youtu.be/69hB-pi9mkA

on Youtube.

The code is on: https://github.com/SensorsIot/LoRa_Mailbox_Notifier

Design Drawing

schematic diagram

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Sheet_1
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PCB

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PCB_Mailbox Notifier
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity	Supplier
1	ATTINY1614-SSF	U1	SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL	1	LCSC	C614831
2	10uF	C3,C4	C1206	2	LCSC	C2443257
3	470nF	C1,C2	C1206	2	LCSC	C141201
4	4.7kΩ	R1,R2	R1206	2	LCSC	C17936
5	HX PM2.54-1X7P ZC-Y	E32	HDR-TH_7P-P2.54-V-F	1	LCSC	C22438157
6	Switch Opening	OPEN	HDR-F-2.54_1X2	1	LCSC	C49661
7	Switch Door	DOOR	HDR-F-2.54_1X2	1	LCSC	C49661
8	Battery	BATT	HDR-F-2.54_1X2	1	LCSC	C49661
9	HDR-F-2.54_1x3	UPDI	HDR-F-2.54_1X3	1	LCSC	C146690