I've developed a board to easily get started with LoRaWAN, for instance with "the things network". Just solder on a rfm95 and a arduino pro mini (3.3v 8Mhz) and you're good to go.

The board is designed in such a way that it fits perfectly in this project box:

The board has the following features:

• Room for a rfm95
• Room for a pigtail antenna connector (868Mhz)
• Room for a Arduino pro mini (3.3v 8Mhz)
• Room for 2 I2C sensors, like SI7021, max44009, etc
• Room for 1 connector for additional I2C sensors (using XH-4P connectors)
• Room for 2 connectors for onewire sensors (using XH-3P connectors)
• room for a XH-2P connector to connect a powersupply (either a lipo or something else)
• Room for 3MM power & tx leds
• Room for a NEO6MV2 GPS module
• all pins from the arduino are broken out
• Room for pullup resistors for the onewire and i2c busses (1206 format)
• Room for resistiors for the power & tx led pins (1206 format)
• Room for a AMS IAQ core air quality sensor

The board can be powered by a accu, for instance a 3.7v lipo

Unfortunately, the board does have a flaws:

• The footprint of the Arduino is a little bit off, because of this only one of the 2 I2C sensor locations can be used
• The holes for the Arduino are a bit small, because of this it takes quite some fiddling to get it in.
• The Arduino headers are a bit close to the GPS, you have to solder them in with a bit of a angle to get enough room to use them
• if you use nuts to secure the GPS, one if them could overlap a arduino pin

Nevertheless, it's a working board and a easy way to get started with lorawan

On the right you can find a link to a sample sketch, that sketch will use the NEO6MV2 module and a SI7021 temperature/humidity sensor and send them over the TTN network. In the repository you will also find a sample decoder that can be used in the TTN console.