Debug the Soil moisture sensor

eklem / greenhouse-automation

Greenhouse automation based on Raspberry Pi and Node-red

MIT License

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Debug the Soil moisture sensor #6

Closed eklem closed 4 years ago

eklem commented 4 years ago

VCC --> 3v3 (Pin 1)
GND --> GND (Pin 9)
D0 --> GPIO 17 (Pin 11)

GND and VCC is fairly easy, just figure out how to do GPIO 17.

First thing to do is dip the sensor in water and see if the second led turns on.
Secondly, measure the output voltage on the D0 when in water

From measuring the voltage:

If 3V or more: Try to use one of the regular input ports (to see if it delivers 3V or more)
If less than 3V do a bit of reading

eklem commented 4 years ago

So, the 3V3 (3V3 and GND) is working. Now only need to measure 3,3V on the signal pin D0. And if that is okay, get Node RED working, and see if I can get the input there.

eklem commented 4 years ago

3,3V output until sensor is lowered in water. Can test it with Node RED