interfacing water flow sensor to arduino

Projects General Guidance
1

hi

I am trying to use a water flow sensor to sense water flow in a pipe and control a valve in the pipe based on the flow.
the water flow sensor i am using is in this link
http://www.seeedstudio.com/depot/g12-water-flow-sensor-p-635.html#productReview

can you guide me in interfacing the sensor to arduino..

Thanks in advance
Dinesh

2

Looks like black and red are GND and +5V respectively, and the yellow is the output. Make sure you pull the data wire up to 5V. The wiki page also says it produces a square wave, with probably proportional frequency to water flow. Figure out the sq wave frequency, and you have your water flow.

3

You can get more information, especially with regard to calculating the flow rate at Seeedstudio forum: Tutorial: Reading Water Flow rate with Water Flow Sensor - #2 by ESP - Grove - Seeed Forum

4

enabling and disabling the interrupts in that sample code never worked for me. I cut out those 2 lines and the rest works like a champ. Well I also converted to gallons as only Eurotrash use liters.... :wink: