Category Archives: Chemistry

How to use a pH sensor with Arduino

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pH Sensor with Probe.

Measuring the pH can be very useful if we are developing an aquarium, a hydroponic or an automated aquaponic. Next we will explain how this sensor works, how we should calibrate it and we will put an example of functional code to use it with Arduino.

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Biosensors

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Quantification of biological or biochemical processes are critical for medical, biological and biotechnological applications. However, the conversion of biological information to an electronic signal to facilitate subsequent processing is a challenge due to the complexity of the connection of an electronic device directly to a biological environment.

Biosensors are attractive devices for analyzing the content of a biological sample due to the direct conversion of a biological event into an electronic signal.

A biosensor consists of a biological recognition element, a transducer and an electronic system. In a complex sample, the biological recognition element is able to discriminate between the various components therein and interact with the compound to be analyzed. Also called analyte. Once produced the interaction the transducer converts the energy produced by this into an electrical signal. Finally the electronic records and processes the signal.

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