uxcell Black Hall Effect Water Flow Meter 1-30L/M G1/2 inches Thread 3-24VDC

let's do a brief walk around on the hardware here's our Raspberry Pi over here I've got the power connected to the 5 volt pin that's pin 2 and then I've got the ground and the yellow pin yellow pin 13 and so I believe the ground is nine if I recall correctly but you can use any ground the ground wire comes over here to one side of our voltage divider and this side this side of the voltage divider also connects to the ground on our flow meter go through the resistor this yellow wire goes back to the PI it's our input to line 13 pin 13 and then it goes through our 4.7 cabe resistor and this yellow wire is the Hall effect switch on the sensor and that's pretty much it from our divider let's go look at our plug our plug our pulse our sensor has black yellow and red wires and I'm using the same color scheme the red wire is the 5 volts from the PI the yellow wire is to the voltage divider and