Hi, I found a schematic of simple temperature, huminidity and dewpoint measuring cicruit. Originally device uses: Sht11 sensor, AT90S8535 MCU, and HD44780 like 20x4 LCD. In my project I replace Sht11 with Sht15 (from Sparkfun), At90s8535 is replaced with newer Atmega8535 (Atmel datasheets say - this is a at90s8535 direct repalcement). But this device working incorrectly, so I have only "Sht11 Monitor" label on LCD, without sensor readings. If possible please help me with source code.

Source project:







URL:
Source project - http://www.embedtronics.com/sht11/sht11.html
Source code - http://www.embedtronics.com/sht11/shtdemo1.c
Schematic - http://www.embedtronics.com/sht11/SHT11Sch.pdf


My device show only this label:



I tried to simulate device in Proteus simulator but this program show the same screen, without sensor readings, only label.


Thank You!