ATtiny25_WH1602 LCD Display WH1602 via I2C BUS on USI ATtiny25 With Philips PC8574 I2C transceiver. Created with AlmelStudio 7.0.1645. ATtiny_DFP version 1.3.172. Make correct fuses to use internal oscillator on 8MHz. HIGH 0xdf LOW 0xe2 EXTENDED 0xff