BLE HMI Display Controller for Smart Water Heater

Droid Technologies designed and developed a display controller with Bluetooth Low Energy (BLE) that works as a wireless HMI for controlling external devices. In this project, the controller was used to operate a BLE water heater.

The device combines a display-based user interface with a BLE connection to the controlled equipment. Users interact with the display to send commands and see device status, while BLE handles wireless communication without cables between the HMI and the appliance.

The controller is not tied to one product. The same hardware and firmware platform can serve as an HMI for any device with BLE, such as heating equipment, home appliances, or industrial units, which makes it a reusable base for future connected products.

Droid Technologies delivered the display controller design, embedded firmware, BLE communication with the external device, and GUI/UX design for the HMI.

Key features:

• Display controller used as a wireless HMI
• BLE communication with external devices
• Control and status monitoring of a BLE water heater
• Reusable platform for any BLE-enabled device
• Custom GUI for local device control

This project demonstrates Droid Technologies’ expertise in HMI development, embedded GUI design, BLE device control, smart appliance interfaces, and embedded firmware development.

Droid Technologies provides hardware design services, firmware development services, PCB design, embedded UI/HMI development, IoT development, prototyping, testing, and full-cycle product development from concept to production.