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Independent Bar30 transmit to LCD on surface

Hey guys,

I’m relatively new to this and could use some advice on a build which would have the Bar30 sensor within a waterproof enclosure, transmitting its depth and temperature data 100m through a cable to a display on surface. Could you possibly point me in the right direction as to what kind of hardware I will need in addition to the sensor.

I was thinking:

Bar30 - 3.3to5v - Arduino Nano - i2c converter? - cat5 - converter to i2c? - Arduino Uno - lcd

Any help would be much appreciated.

Here’s a good reference for getting started: Guide to Using the Bar30 with an Arduino

Here are my recommendations:

  1. Bar30
  2. Level Converter
  3. Arduino Nano
  4. Fathom-S (ROV Side from the set)
  5. 8-wire cable of your choice. Cat 5 will work.
  6. Fathom-S (Topside board from the set)
  7. Arduino Uno
  8. LCD

This section of the Fathom-S shows how to make the connections on the ROV side. There’s a 5V TTL Serial header on the topside board that should be self-explanatory.

We haven’t set up an Arduino-to-Arduino on the Fathom-S before so let us know if it works if you decide to pursue this.