Cedric-
1Some notes
The ESP-32 board pins operate in 3.3v levels while the Gravity pH and EC sensors operate in 5V. I inserted a simple voltage divider to shift 5v to 3.3v levels on the signal pins.
Hydroponics Sensor
ESP32 based Hydroponics Sensor (Water Flow, Water PPM, Water pH, Water Temperature).
Discussions
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How to use the EC meter?
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So how did it turn out? Are the Gravity sensors stable and accurate enough?
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