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  • Author Author: feiticeir0
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[Pool Water Monitoring] #12 Architecture Design #3: Arduino MKR 1300 WAN data sender

feiticeir0

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Hi all ! Hope everyone is safe and sound. This is the part of the project that will collect and send the data to the receiver part.

It will monitor:

  • Water temperature using the DS18b20 High temperature probe
  • Nutrients of the water using the TDS probe
  • Water PH using the PH probe
  • Environment temperature, humidity and pressure using the AM2302 sensor

Hardware

  • Arduino MKR 1300 WAN
  • TDS sensor
  • PH sensor
  • AM2302
  • 2x batteries

Here's a schematic, so far, of it:

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Everything will be fitted inside of the Hammond enclosure with the transparent lid.

To outside of the enclosure, in one hole and using one of the Hammond cable glands will be three cables:

  • Antenna, in 868MHz (Europe frequency) to connect to the Arduino
  • High temperature sensor probe
  • TDS sensor probe

The PH probe is another problem. The probe cannot stay inside of the water all the time.

I'm still waiting on the probe to arrive, but I know that the sensor and the probe are connected through a BNC connector. 

A hole will be made, big enough for the BNC connector and silicone will be used to seal it and prevent leaks to inside the enclosure.

Anytime the PH is to be measured, the connector will be inserted and a PH reading will be taken.  In the code, measures will be made if the PH probe is not connected.

Here are some photos of everything inside - but still unassembled -

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Next steps will be assemble everything, calibrate the TDS probe and start coding. When the PH probe arrives,  it will be added to the mix, calibrated and start working.

My next post will be about all of the values that will be measured and what they mean .

Stay safe .

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