IIot Test Bed Using Maixduino

The Industrial IoT test bed centers around the Sipeed Maixduino board, which acts as the central processing unit for monitoring environmental and electromechanical metrics. For environmental data, the system relies on the DHT11 sensor to track ambient temperature and humidity, alongside the BH1750 light sensor to measure surrounding illumination levels via the I2C protocol. On the mechanical side, a 12V 5A DC power adapter supplies power to an L298N dual H-bridge motor driver, which regulates the speed and direction of a 1000 RPM DC motor. To track mechanical output, a 30-slot rotary encoder disc mechanism paired with an opto-interrupter or infrared LED sensor module counts passing slots as the motor spins, allowing the microcontroller to calculate rotational speed in RPM. Simultaneously, an INA219 current sensor module monitors the electrical power consumption of the motor circuit by measuring bus voltage and current draw. Data gathered from these diverse sensors is processed locally by the Maixduino board, utilizing libraries such as Wire.h, DHT11.h, BH1750.h, INA219.h, and Sipeed_ST7789.h to manage sensor communication and display feedback, establishing a comprehensive platform for test and measurement instrumentation.