How do you construct a simple circuit for a CO2 detector?
To construct a simple circuit for a CO2 detector, use a CO2 sensor module that provides an analog or digital output indicating CO2 levels. Interface this sensor with a microcontroller to process the readings. Include an alarm system, such as a buzzer or LED indicator, to alert when CO2 levels exceed a safe threshold. Power the circuit with a reliable source and add a display if needed for real-time monitoring.