SEN0161 Calibrarion
Guangyang 2022-10-27 15:06:43 1564 Views1 Replies In the step 3 in the calibration process from the website (https://wiki.dfrobot.com/PH_meter_SKU__SEN0161_), the error I got is 0.81, which exceed the error value stated on there (0.3), if that affect the calibration process? And from the code, what is the usage of value 3.5 that use to multiply the voltage? MCU used is esp32. Thank for yours answer.
2022-11-02 10:15:40 
Winster
Hi, The PH V1 sensor cannot use ESP32. The power supply needs 5V to work properly, and the ESP32 operating voltage is only 3.3V.You are advised to use a PH V2 sensor that supports 3.3V power supply.
Winster 
