How old is the seven-segment display? Surely it is a product of the 1970s. After all, calculators started showing up, and the height of junior high humor was plugging 7734 into your calculator and ...

We’ll also use software packages for communication, data storage, and visualization, such as MQTT, Node-RED, InfluxDB, and Grafana, mostly following RAKwireless’s user guide WisMesh Station is ...