This PH sensor rod is an economy version designed on ATMEGA8 IC.
It gives serial data at Tx pin
PH value, Light Value & Temperature values are sent out at Serial port every second.
Any micro controller can be used to PARSE out the PH value.
http://www.alselectro.com/ph-sensor.html
Arduino code
http://www.alselectro.com/files/ph1.zip
