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On the Arduinos that are integrated into the system, we use the [Dragino LoRa shield](https://wiki.dragino.com/index.php?title=Lora_Shield). In the image below, you can see how the pins on the Dragino LoRa shield are assigned. This is useful as not all pins on the shield are useable. This is especially important on Arduino Unos that don't have as many pins as the Arduino Megas.</br>
[[File:Lora board.JPG|500px]]</br>_The Dragino LoRa shield. Blue-boxed pins are not used by the shield and are free to be used._
## Gateway
Our gateway is the [LG01-N Single Channel Gateway](https://www.seeedstudio.com/LG01-N-Single-Channel-LoRa-IoT-Gateway-p-2935.html).</br>[[File:DraginoLG01-N.JPG|250px]]
## Nodes
### client_arduino_responsive-light
[[File:GlowingBucket.jpeg|250px]]</br>
_The glowing crystal indicates the batterie's charge status._</br>
Purpose:</br>
- Receive battery voltage and change colors to indicate battery status
