Designed BLE sensors and WiFi and LoRa gateways based on Nordic nRF51822 BLE modules and HopeRF’s RFM95W LoRa radios.  All wireless data presented as MQTT messages to a central broker, with integration into InfluxDB and Grafana for dashboards.  Features include Distributed WiFi and LoRa gateway architecture BLE-LoRa bridging BLE beacon replay/spoof detection Geolocation of BLE beacons […]