- Optional IR Speed Detection: This optocoupler module is designed for accurate speed measurement using an infrared slotted optical sensor. It features an infrared light-emitting diode and an NPN phototransistor with a 5.9 mm gap width. The module activates when a non-transparent object passes through the slot, making it ideal for use with encoder wheels to generate a low TTL signal. - Technical Specifications: - Operating Voltage: 3.3 V to 5 V - Output Format: Digital switching output (0 and 1) - Signal Indicator: Lights up when VCC and GND are connected; OFF when the output is low. - Compatibility: Can be connected to a relay for limit switch functions or to an active buzzer module for alarm applications. - Easy Integration: The output interface can be directly connected to the IO port of a microcontroller (MCU). Utilize it with an external interrupt to detect sensor occlusion. For example, connect it to a motor's encoder wheel to monitor engine speed effectively. - Measurement Capabilities: - The speed sensor outputs a pulse signal, indicating an interruption each time the infrared beam is activated. - To measure speed, use the MCU's timer to count the number of external interrupts received within one second. - Practical Applications: - Speed Monitoring: Ideal for applications requiring real-time speed detection in motors and machinery. - Automation: Suitable for creating limit switches in robotics or automated systems. - Alarm Systems: Can be integrated with alarm modules for enhanced security setups. This optocoupler module combines reliability and precision, making it an essential tool for speed measurement and automation projects.