Core microcontrollers

STM32 Nucleo/Discovery or equivalent Cortex-M boards with SWD debugging support

Entry-level FPGA education boards for HDL, digital logic, timing, and embedded soft-core experiments

Mixed class set: Seeed XIAO RP2040, XIAO ESP32-C3/S3, Raspberry Pi Pico W, ESP32 DevKit; suitable for Fab Academy embedded programming and rapid projects

The MQ-136 Gas Sensor is designed to detect hydrogen sulfide (H₂S), a toxic and corrosive gas commonly found in industrial and waste environments. It features high sensitivity and stability, making it suitable for safety systems in oil refineries, sewage treatment plants, and chemical industries. The sensor ensures early warning of hazardous gas leaks, helping maintain safe working conditions.

The MQ-137 Gas Sensor is used for detecting ammonia (NH₃) gas in various environments. It is highly sensitive to ammonia while maintaining moderate resistance to interference from other gases. This sensor is ideal for agricultural applications, refrigeration systems, industrial leak detection, and environmental monitoring. With fast response and recovery times, it provides reliable performance for real-time gas detection systems.

The MQ-138 Gas Sensor is a versatile sensor capable of detecting a range of gases including benzene, alcohol, smoke, and other volatile organic compounds (VOCs). Its broad detection capability makes it suitable for indoor air quality monitoring, safety systems, and research applications. The sensor offers good sensitivity and quick response, making it an excellent choice for multi-gas detection projects.