Accurately calculating the D.O. of water is quite difficult. The EZO-DO Circuit gives you accurate D.O. readings in Mg/L and percent saturation.

Connect your dissolved oxygen probe to this circuit to create a workable signal for your microprocessor using UART or I2C protocol.
Works with any brand and type of D.O sensor.

Accurately calculating the D.O. of water is quite difficult. Once all the mathematical calculations are done, it takes hundreds of chemical titration tests to confirm that the readings are correct over the full scale. The process is agonizing. Fortunately, you don’t have to do any of that. The Atlas Scientific EZO-DO Circuit gives you accurate D.O. readings in Mg/L and percent saturation. Using its temperature, salinity, and pressure compensation features, you can be sure the readings are correct no matter where in the world you are.
 

It may happen that you want to return an order. Because the product does not suit you, maybe there is another reason why you would not want the order. Whatever the reason, you have the right to cancel your order up to 14 days after receipt without giving a reason.

After cancellation you have 14 days to return your product. You will then be credited 85% order amount excluding shipping. For more information click the following link: /pages/shipping-and-returns

The EZO™ Dissolved Oxygen Circuit comes with:

• 1x EZO™ Dissolved Oxygen Circuit

Documents

• EZO™ Dissolved Oxygen Circuit Datasheet

• Wiring Diagram

• RoHS Certificate

• CE Certificate

Basic Sample Code

• Arduino Uno Sample Code

• Arduino Mega Sample Code

• Arduino I2C Sample Code

• Raspberry Pi Sample Code (UART, I2C, USB)

Library

• EZO UART Library

• EZO I2C Library

3D file

• EZO™ Dissolved Oxygen Circuit Footprint File (*.dxf)

• EZO™ Dissolved Oxygen Circuit 3D model (*step)

Instructable

• UART and I2C mode switching

Tools

• Dissolved Oxygen Calculator