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Blue Robotics Depth Sensor Guide and Docs

Echo ping sonar

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Ping sonar measures distance to seabed.
It is connected to sensor teensy.

Reference

Docs and guide - Blue robotics Ping sonar

Side scan sonar

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Model: DeepView HM680D

Reference

Specs - Deepvision side scan sonar

TODO: Find more docs and guides

I2C Level Converter

For i2c devices with different voltages. 

Not used. Old system used arduino with 5V I2C logic. Teensy used 3.3V logic.
All i2c sensor in ROV uses 3.3V.

Reference

https://bluerobotics.com/store/comm-control-power/tether-interface/level-converter-r1/

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Electrical Drawing -> Stepper Diagram

Reference

Pololu Guide and docs

Magnetic sensor

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Magnetic sensor is a switch that closes when nearby to a magnet. 
One is used in each motor house for calibration.

Reference

no.rs proximity sensor