How do I record pH levels?

IoT Devices
1

I am building a model artificial pancreas and would like to know how to record pH levels.

Here’s a link to my project:

I am using a Spark Core to send the data to Google Spreadsheets which will later send it to ubidots. Does anybody have a code for the Spark Core to record pH levels?

Thanks

2

Hi @benclough, nice project!

From our experience, PH measurement can be done using an adapter like this:

http://www.phidgets.com/products.php?product_id=1130_0

It can be plugged directly to an Arduino-like board and you’ll be able to read the pin as any other analog input. As for the PH probe, you’ll need one with a BNC connector, which is a standard connector for these types of measurements.

Other meters like Sparkfun’s seem quite expensive to me. Using the Phidget’s adapter + a $20 PH probe, would give you the same results for half the price.