There is a problem with only using the green LED circuit. When the buzzer comes on it stays on, even if the green LED comes back on. It must be silenced by pressing the push-button. The green and red LEDs can "flicker" back and forth depending on what the airflow is doing. I only want the alarm...
This is for an airflow alarm. I designed this simple airflow alarm and all is working well. When the airflow is above the setpoint a green LED is on. When it falls below the setpoint a red LED comes on. If the airflow falls below the setpoint for more than five seconds a buzzer comes on. When a...
