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LoRa RMM v3.0

Board

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

Wall Connector View:

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

Firmware programming requires a 3V3 UART board attached at PRG connector:

Setting LoRa Keys

Spreadsheet with current TTN 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

LED is flashing while looking for WiFi and requesting IP from DHCP server. When it has got an IP, LED remains during 1 second on.

Access Point SSID: iotcat
Access Point Password: 1234567890a

Access Point should have Internet connection without Captive Portal.

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.

It has been programmed to wake up every 10 minutes:

Troubleshooting

Flashing continuously

Normal Mode

LoRa RMM device has not TTN keys loaded.

Reason: Because it is first time using it.

How to solve it?: Uploading TTN keys to LoRa RMM device.

Setting LoRa Keys

Check if any other device (like a mobile phone) is able to connect to an Access Point with these settings:

Access Point SSID: iotcat
Access Point Password: 1234567890a

Reset and try it again.