The smartNode smart device is very similar to the smartWiFi and the smartBLE, except it relies on Node-RED as broker and front-end instead of Blynk.
Node-RED offers a flexible environment to acquire and process data, design and display a dashboard, and send commands.
Node-RED runs on any computer and even on an Android-powered tablet. The dashboard only requires an internet browser, on the same computer or on a different one. The responsive design of the dashboard makes it suitable for any screen size.
The device connects to the I²C port of the RoboTX and is powered by the RoboTX.
Selecting the radio is no longer a criteria, as any radio protocol can be used, among WiFi, Bluetooth, BLE or sub-1 GHz to name a few.
Node-RED includes nodes for MQTT and Serial connectivity, but is extensible with additional nodes.
In case of MQTT, the same terminal where Node-RED runs also hosts the MQTT broker.