Building an M5Stack Bluetooth receiver controller
The M5Stack Core2 Bluetooth receiver controller is an enhancement of the messenger device you build in the previous project activity. The concept of sending a text message using the M5Stack Core2 to a smartphone or tablet was investigated. You will take the prototype built with the use-case diagram shown in Figure 7.16 and convert it to receiver-controller concept diagrams shown in Figures 7.20 and 7.21. Figure 7.20 illustrates an ON-control message controller:
Figure 7.20: Sending an ON-control message
An OFF-control message controller use-case diagram is shown in Figure 7.21:
Figure 7.21: Sending an OFF-control message
Upon the user sending the control message (ON or OFF), the smartphone will display it on its touchscreen LCD. The M5Stack Core2 will display the message and turn the RGB LED bar on or off accordingly. The buttons on the M5Stack Core2 will be used to send ON...
