Build Open ROV to make River Intoxication monitoring system

electronics
software

#1

Hey I wanted to build an open rov using Particle Photon and make system to check water intoxication, for doing this I have to interface PH sensor which help me to monitor all the reading of the river, so I am looking for possible ways to convert the analog input of this sensor to digital output at maximum depth of 60m

Your suggestions will be very helpful