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OpenCTD Project switches to Adafruit Feathers for oceanographic data loggers #Feather #Science @Hacksterio

Via, the OpenCTD project, which aims to create a low-cost and readily-accessible open source conductivity, temperature, and depth (CTD) sensor for oceanographic research, has officially launched revision two of its design — now built around an Adafruit Feather M0 Adalogger development board.

CTDs come in a variety of shapes, sizes, and applications. Most oceanographic vessels have a CTD connected to a rosette system, which can house other instruments and collect physical water samples in parallel with real-time data collection. CTDs are also commonly attached to moorings, autonomous underwater vehicles (AUVs), remote-operated vehicles (ROVs), and, on occasion, marine animals.

Commercial CTDs are expensive, with the most affordable models costing as much as $6,000.00. The expense of the CTD is a barrier-to-entry for formal and informal researchers working with limited budgets.

The latest model – now using Adafruit Feather

The OpenCTD can be built in two days by someone with no electronics experience using parts available from hardware stores, electronics suppliers, as well as a few 3D-printed components for about $300. It is rated to depths of 140 meters, providing access to the majority of the world’s continental shelf for a fraction the cost of a traditional research cruise.

Read more about OpenCTD and how true sensor data collection can be done economically:

See the Feather line of affordable microcontrollers and sensors on

Read more about Feather on Awesome Feather

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