2024-04-23 00:00:00 The HMI Control Panel app allows interacting with compatible microcontrollers (MCU) using your Android device over a wireless connection like Bluetooth or WiFi. ​ Make your own customizable HMI in the app without the need of a computer, you can select from sixteen different objects (widgets), ten widgets are available from start, the other six widgets require the yellow padlock (in-app purchase).