Simple ATTiny85 Based PH Meter

Simple ATTiny85 Based PH Meter:

The ATTiny85-20PU is an 8-bit microcontroller with an 8KB of program memory. It has six general-purpose input-output pins that can also be programmed to act as ADC pins, PWM pins, SPI port, or I2C port. The ATTiny85-20PU has 512 bytes of EEPROM that can be used to store data that are rarely chang…