Getting Started

Wiring the Hardware

You need a Raspberry Pi and a nRF24L01+ transceiver. The transceiver modules can easily be obtained via eBay and many other places for prices as low as $2. To extend the reach use a transceiver module with a power amplifier and a SMA antenna.

Wire the nRF24L01+ transceiver to the GPIO's of the Raspberry Pi:

nRF24L01+ PIN	Raspberry Pi GPIO
VCC	27
GND	GND
CE	25
CSN	8
SCK	11
MOSI	10
MISO	9
IRQ	24

Installing the Software

Download the BtMqttSnGateway.tar.gz from the latest release.

wget https://github.com/bittailor/BtEmbedded/releases/download/v0.1.1/BtMqttSnGateway.tar.gz

Extract it.

tar -xvzf BtMqttSnGateway.tar.gz

Change into the BtMqttSnGateway-version folder and adapt the Broker entry in the settings.xml to your MQTT brokers URL and provide user and password if needed.

pico settings.xml

<Broker>
    <Url>iot.eclipse.org</Url>
	<!-- <User>mqtt</User> -->
    <!-- <Password>password</Password> -->
</Broker>

Start the gateway with root privileges since root privileges are needed for the GPIO low level access.

sudo BtMqttSnGateway