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 in both WiFi and LoRa architecture
small form factor sensor design for years of battery life on coin cell batteries
Fun development process by using ARM mBED to manage complexity