Project Overview:

The NeoLink STM32 Interface Board is a versatile and compact development module that integrates multiple communication protocols and functionalities for real-time applications. It features a robust STM32 microcontroller and seamless interfacing with Wi-Fi, Bluetooth, EEPROM, and 2.4 GHz communication modules. This module suits IoT, embedded systems, and industrial automation projects.

STM32 Microcontroller

The STM32 microcontroller serves as the brain of the PCB, powered by a 32-bit ARM Cortex-M3 processor running at 72 MHz, ensuring robust performance for computation-intensive tasks. It features built-in flash memory for program storage and SRAM for runtime data management, offering a reliable foundation for embedded applications. Equipped with essential peripherals such as GPIOs, UART, SPI, and I2C, the STM32 enables seamless connectivity with a wide range of sensors and modules, making it a versatile choice for diverse projects.

Wi-Fi Interface (ESP-12S)

The ESP-12S is a versatile Wi-Fi module compatible with IEEE 802.11 b/g/n standards, making it ideal for wireless communication in various applications. Integrated with the STM32 microcontroller via a UART interface, it ensures smooth and efficient data exchange. Operating within a voltage range of 3.0–3.6 V, the ESP-12S delivers reliable functionality, enhancing the board's connectivity capabilities.

2.4 GHz Interface

The NRF24L01+ module is employed for short-range wireless communication, operating in the 2.4 GHz frequency range to facilitate efficient data transmission. It features low-power consumption and supports high data rates of up to 2 Mbps, making it an excellent choice for energy-efficient and high-speed applications. Communication with the STM32 microcontroller is established through an SPI interface, ensuring seamless integration and reliable performance.

Bluetooth Module

The HC-05/HC-06 Bluetooth module facilitates wireless serial communication between devices, offering a reliable solution for short-range connectivity. It operates over a UART interface, enabling seamless bidirectional data transmission with the STM32 microcontroller. With a 3.3 V operating level, the module ensures full compatibility with the STM32's voltage supply, making it a practical choice for integrating Bluetooth functionality into embedded systems.

Novelty

The NeoLink STM32 Interface Board is a versatile platform that integrates Wi-Fi, Bluetooth, 2.4 GHz NRF, and EEPROM, enabling hybrid IoT networks and seamless sensor interfacing. Its modular design supports firmware updates, debugging, and easy expansion with peripherals like motors and displays. Featuring robust power management and real-time performance from the STM32 Cortex-M3 processor, it excels in applications like robotics, industrial control, and telemetry. With IoT-ready architecture and cost-effective multi-protocol capabilities, NeoLink simplifies development for startups, makers, and educators, providing a compact and scalable solution for diverse embedded systems.

Applications

1. IoT Devices: Smart home automation (light control, HVAC, security systems).
2. Industrial Automation: Real-time monitoring and control in production lines.
3. Wearable Technology: Fitness trackers and smart watches with Bluetooth connectivity.
4. Robotics: Wireless control for autonomous robots and drones.
5. Telemetry Systems: Agricultural and weather monitoring using sensor networks.
6. Embedded Systems: Educational tool and prototyping platform for developers.
7. Consumer Electronics: Smart appliances and remote-controlled devices.
8. Smart Cities: Energy-efficient data acquisition for traffic and utilities.

Schematic: https://drive.google.com/file/d/1LQTjbCXJ7J8Osn-RgBAww7wK0StnGmqm/view?usp=sharing

Datasheet: https://drive.google.com/file/d/1FrqxuXK3UwNTIx9a8C9P-jkECuWabGwH/view?usp=sharing