How to install Node-RED on Raspberry PI link
Connecting Raspberry PI running Node-RED to Azure IoT Hub link
Changing where Node-RED stores data link
RFID/NFC Reader node for Node-RED on a Raspberry PI [link]c(https://flows.nodered.org/node/node-red-contrib-nfc)
Beacon reader and emulator of Bluetooth 4.0 radio for Node-RED link
Neo4j node for Node-RED link
Off-topic Graph Database link
Installing BlueZ for BLE support link