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LoRa RMM v3.0

Board

File:RMM 3D v3.0

Caption

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Connectors

Plastic Box Wall Connectors

SMA

868MHz Antenna plugged at SMA wall connector. To avoid malfunctions, it is important to connect antenna before power LoRa RMM v3.0 device up.

4 pin connector

1- 3V3
2- NC (not connected)
3- Rx (MPPT's Tx)
4- GND

PCB Connectors

ANT

uFL connector. SMA / uFL antenna pigtail is connected on ANT.

PRG

J2: Firmware programming connector. Also, it can be used for debugging.

To avoid power supply issues, it is suggested powering device only by COMM connector (J1).

COMM

J1: It is connected to 4 pin external connector.

GND: BLACK
RX:  RED    <- Be careful!
Tx:  WHITE  <-- Not Connected
3V3: YELLOW <- Be careful!

Modes

Firmware Programing

Button sequence:

1- Pressing RST button
2- Pressing IO0 button
3- Releasing RST button
4- Releasing IO0 button 

Setting LoRa Keys

Registering device at TheThingsNetwork backend

The Things Network backend

Using LoRa's Setting Tool

Button sequence to load LoRa keys in LoRa RMM v3.0 device:

1- Pressing RST button
2- Pressing WEB button
3- Releasing RST button
4- Releasing WEB button

After button sequence, open LoRa's Setting Tool:

5- Clicking on Accept MAC button. Then, message Press IO0 button is shown.
6- Pressing once IO0 LoRa RMM v3.0 button. Then, MAC is shown at Accept MAC button.
7- Connection with device can be tested pressing Test ON (it lits LED on) and Test OFF (it lits LED off).
8- Press Read button to read current keys in LoRa RMM v3.0 device (a lot of F means it is first time uploading LoRa keys).
9- Copy keys from The Things Network backend and paste on LoRa's Setting Tool. (Device Address, Network Session Key and App Session Key)
10- Set Spread Factor (ranging from 7 to 12) and Deep Sleep in minutes.
11- Press Send to upload LoRa RMM v3.0 device values.
12- Press Clear to clear values on web and press Read to verify new values have been uploaded.

Normal Mode

There is not button sequence. It is by default mode when powering LoRa RMM up. Coming from other modes, normal mode can be reached pressing RST button.

Testing TTN (The Things Network) keys have been uploaded properly:

In above video, after powering device up, RST has been pressed again to test it was working as expected.