Writing logs is not fun....

I made a big progress since the start. I have learned a lot. The controller is almost finished now. Some of major problems were

• Minimal voltage on AREF is 2.0 V so I cannot use LM4041 for better accuracy.
• There was a problem using analogReference(INTERNAL) that was repaired in newer Arduino core build. (I think because it works now)
• I have learned that I2C communication has some impact on ADC reads (noise) so it is better to read from sensor between LCD refreshes. Reading from ADC several times and averaging the value also helps.
• When you order something from China it is possible that the product will have different pin out. I had to redo the pcb because of the LCD...

Current version of PCB is v2.1.