IR2IO

The IR2IO project functions as a 4-channel switch controlled by standard infrared remote controls. At the core of the system is an STM32 microcontroller (specifically hosted on the STM32 Blue Pill board featuring the F103C8T6 chip), which processes inputs and manages the switching logic. An IRM-H600 broadband IR receiver is integrated onto the custom PCB to capture incoming infrared light signals across a wide frequency range without requiring the user to decode specific transmission protocols. When you press a button on a common household remote, the IR receiver detects the modulated light pulses and converts them into electrical digital signals that are fed directly into the STM32 microcontroller. The microcontroller's firmware interprets these incoming pulse trains to trigger state changes across the four independent output channels. Users can also interact with the system locally via onboard push-buttons, providing a manual override or alternative control method alongside the wireless infrared input. Passive components such as resistors and capacitors are distributed across the PCB to ensure stable power delivery, proper signal conditioning, and reliable filtering for both the microcontroller and the IR receiver circuit. By combining optical sensing, digital edge-detection, and microcontroller-based sequential logic, the IR2IO translates arbitrary remote control commands into clean digital switching actions suitable for driving external loads or interfacing with broader electronic systems.