Easy IoT is a simplest IoT Solution presented by DFRobot
By lauren.qaisieh94
We are working on a big water project that requires measuring the amount of dissolved solids in it so we bought a similar TDS board to the one you are using on the website.
Our project is based on ESP32 as a controller, and we are connecting the TDS board to one of its analog pins.
We used the same code and library provided on the website and while testing the TDS board we noticed that the measured readings are not accurate compared with the measured readings using a certified TDS pen. So, we jumped to the advanced tutorial for calibration purposes but unfortunately, we are unable to get any readings from the TDS board or enter the calibration mode. Appreciating your help in solving this issue.