I just purchase a Dissolved Oxygen Kit (https://www.atlas-scientific.com/product_pages/kits/do_kit.html), and I would like to read DO values and display on LCD. I uploaded the source code from: https://www.atlas-scientific.com/_files/code/do-i2c.pdf , but it just display on Serial Monitor. I don’t know how to get a variables of DO sensor.
I try to modify the source code, then I can get the DO values, but I can’t send the commands to circuit to calibration data. Can somebody help me please?
test_i2c.ino (4.43 KB)