Connect Moteino Mega w/LMIC to Public LoRaWAN Network

[waskerley]

Hello!  I am looking for a cheap way to connect to https://www.thethingsnetwork.org/, or any other public LoRaWAN network, and the moteino looks like it could be a good fit.

Will I be able to connect without any major problems?  Are there any guides on how to get started?

[Darren]

I am trying to do the same, I have found this site with a very good tutorial using an arduino uno as there are no really good 915 mzh Lora examples for the moteino.

http://www.mobilefish.com/developer/lorawan/lorawan_quickguide_build_lora_node_rfm95_arduino_uno.html

I was confused with LMIC library, and some changes to wiring on the moteino as per this article (I bought the moteino LR and moteino mega LR a while ago)

https://github.com/lukastheiler/ttn_moteino

Glad to share my experience/knowledge/failures with you

[Felix]

The LMIC chip option is available on the MoteinoMEGA, and here's the schematic of that board.
The LMIC chip is on the I2C pins (+ pullups). Other than that there are 3 jumper pads that connect Dio1 Dio2 and RST to the MEGA's D21, D22 and D3.

[Darren]

Thanks Felix this worked for me.

The LMIC pin mapping for this board that worked for me:

lmic_pinmap pins = {
.nss = 4,
.rxtx = 7, // Do not worry about this one - not connected RFM95
.rst = 3, // Reset pin D3 - solder the pad on the board
.dio = {22, 21, 0}, //Solder the D22 and D21 pads on the board - D22, D21 - 0 is not used and sometimes if I used LMIC_UNUSED_PIN I would get a compile error.
};

In your config.h file change the radio freq by uncommenting #define CFG_us915 1 and commenting #define CFG_eu868 1
Also uncomment #define CFG_sx1276_radio 1



//#define CFG_eu868 1
#define CFG_us915 1
// This is the SX1272/SX1273 radio, which is also used on the HopeRF
// RFM92 boards.
//#define CFG_sx1272_radio 1
// This is the SX1276/SX1277/SX1278/SX1279 radio, which is also used on
// the HopeRF RFM95 boards.
#define CFG_sx1276_radio 1

[Kylix]

What differences are between Moteino Mega R2 and R3?

[Felix]

What differences are between Moteino Mega R2 and R3?

Very small difference, added 1 cap to the reset circuitry and the LMIC EUI64 chip SOT23-5 pads + 0603 pullup resistors.

[Kylix]

I already see those changes in the R2 version you published 3 posts up, that's why I asked :

[Felix]

My bad, just the reset circuit. LMIC was already done in R2.