LTE Remote Automation Controller

Droid Technologies designed and developed a cellular remote automation controller for monitoring and controlling distributed equipment such as valves, pumps, power lines, actuators, and other electrical loads.

The device is based on an STM32 microcontroller and uses a Quectel EM05-E LTE Cat 4 modem for reliable remote communication over cellular networks. Multiple relay outputs allow the controller to perform automation tasks such as opening or closing valves, switching power, and controlling external equipment.

The hardware also supports external antennas for different frequency bands, enabling antenna selection and RF configuration according to installation and coverage requirements.

Droid Technologies delivered hardware design, PCB development, embedded firmware, LTE modem integration, RF and antenna integration, relay control, power electronics, and complete system testing.

Key features and engineering scope:

• STM32-based embedded controller
• Quectel LTE Cat 4 modem
• Remote equipment and industrial automation control
• Relay outputs for valves, pumps, power switching, and actuators
• Cellular remote connectivity
• External antenna support for multiple frequency bands
• RF and antenna integration
• Custom PCB and hardware design
• Embedded firmware development
• Power supply and protection circuitry
• Industrial I/O and control interfaces
• Hardware and firmware integration and testing

This project demonstrates Droid Technologies’ expertise in industrial IoT development, remote automation systems, LTE-connected embedded devices, STM32 firmware development, cellular modem integration, RF hardware design, relay controllers, and custom industrial electronics.

Droid Technologies provides hardware design services, firmware development services, PCB design, embedded systems development, industrial IoT development, RF engineering, mechanical design services, prototyping, and full-cycle electronic product development.