I can’t seem to get any reading out of my raven flowmeter. I’ve got 5v and ground on the appropriate pins, Got the cal factor entered. Valves function properly while going through the field and I can control the flow valve manually but no reading on the flow meter. On one of the other rate control boards I read you needed to put a jumper between two pins for these raven meters to work properly. Is that the case with the RC15 board as well?
The module setup should have flow 1 on pin 17 of the esp32. This is connected to pin 10 on the 23 pin ampseal connector. It works with a Raven NH3 flowmeter with no jumper.
Ok, that is how I have it wired. I wonder if I have problems with the flow meter itself. Thanks!
Are you powering the flow meter with 5v or 12v? I have just shy of 5v at the sensor actually, like 4.8 or something like that. Didn’t know if that was maybe my issue.
I am using 5v.
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I switched flow meters with another Raven meter I knew was good and still couldn’t get any readings. I only had 4.17v on the signal pin, 4.98v on the 5v pin. So since the flow meter could handle 4.5 to 16v I decided to try powering it with 12v instead of 5v and then I immediately had flow readings!
Good that it works.
So it worked fine last night, tried switching to my other flow meter to verify that it was bad, couldn’t get any any pulses out of it, switched back to the flowmeter that had worked the night before and now I can’t get it to read at all either 
Did some more reading on troubleshooting on the meters and the wiring and I do have the correct wiring as shown in the picture. But everything I’m reading about these flow meters says that between the ground and signal pin I should have power and obviously between power and ground. So when the flow meter spins it grounds the signal pin to get a pulse. But the signal/flow pin on the rc15 is grounded… So no power on the signal pin. I can get it to read pulses if I short between power and signal though. Is that how it’s supposed to be?
Hopefully the final update, turns out the sockets in the plug for the flow meter are just a little too lose, hold it together and I get signal no problem. Perfectly clean but just a little loose! So I should be good now but I am still curious about the why the signal pin is grounded instead of having power to it all the time if someone knows the answer to that!