Hands-On Embedded Programming with C++17

Plants, rooms, and beyond

In Chapter 5, Example - Soil Humidity Monitor with Wi-Fi, we looked at developing firmware for the ESP8266 MCU to complement a soil humidity sensor and pump, to ensure that a connected plant would be provided with sufficient water from the water tank.

As we noted in that chapter, the firmware used is highly modular and has the highly flexible MQTT-based interface so that it can be used for a wide variety of modules. This chapter covers the system in which the firmware originated: Building Management and Control (BMaC), originally developed just to monitor rooms for their temperature, humidity, and CO² levels, but later expanded to keep tabs on coffee machines and meeting room occupancy, and ultimately to control ...