2022-05-18, 02:00 PM
(2022-05-18, 04:59 AM)jspearman1711 Wrote: Looking for some help.
I setup an ESP32 using SensESP first with v1 and now with v 2.4.1 for a fuel flow meter. I'm away from the trawler and can't test directly. I've tested the connection using a YF-201 water flow meter into pin 4 and 5 as given in example - https://open-boat-projects.org/en/sensesp/ . It works great,
The fuel flow meter on the trawler is a FloScan meter. Documents state the meter outputs is in the 4 to 10 volts for the readings.
How to I wire in the FloScan meter output into the ESP32? I'm I wrong to assume that pin 4 and 5 only take 3.3v and I'll need to use a voltage divider or something to take the voltage down to rescale for the flow reading? Or can I wire directly since it only looking at frequency reading only and volts does not matter and the ESP32 handles the voltage?
Any help will be greatly appreciated!
Thanks
Jim
What exactly do you connect to pins 4 and 5? I can't seem to find a YF-201, there is a YF-S201 but that has only one pwm output.