Example with SDI-12 Sonde about arduino-sdi-12 HOT 5 CLOSED

Hi @AugustoAlmeida13,

Does your setup look like this? (Imagine SDI-12 Probe is YSI instead)

from arduino-sdi-12.

Hi @AugustoAlmeida13,

Does your setup look like this? (Imagine SDI-12 Probe is YSI instead)

I believe so, but shouldn't the ground from the external source be the same as the Arduino's?

from arduino-sdi-12.

I would try grounding the sensor to the board as shown (if possible). I don't know the exact details of your setup - but a common ground connection that is closer to the data signal can improve signal quality (compared to relying on a common ground further away).

from arduino-sdi-12.

I fed the arduino externally with 12 V and fed the probe to the Vin and GND pins, as you did in one of the links in the examples. It still didn't work, but I believe it is something related to the probe configuration, I will contact the manufacturer and get answers.
Thank you very much for your willingness.

Sincerely,
Augusto Almeida

from arduino-sdi-12.

Hi @AugustoAlmeida13,

I wasn't suggesting the probe should be powered by 5 volts from the Arduino, I was just suggesting to try connecting the probe's ground to the Arduino GND pin. It is possible the probe requires the full 12 volts to function.

Best of luck!

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