Tag - flow sensor

Liquid Flow Sensor, Turbine Meter wiring with ESP8266

Thanks to customer Mark, here is wiring diagram of the flow sensor/meter with esp8266, the key point is needing a 555 timer chip as a Schmitt trigger. Also the VCC voltage of flow sensor is 5V, and esp8266 is 3v3, a voltage divider is needed in the circuit. You can find the flow sensor...