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Atmega chip burns when connected to POWER
thank you for replying.  I reposted it with full schematic and entire PCBs. and "vr1" is T93YA to adjust brightness of letters 
Wednesday, 12 February 2020 - 13:31
Atmega chip burns when connected to POWER
  I'm really sorry if my hurry was uncomfortable.   While I redesigned the board,  I thought the thickness of the pattern is small problem and i changed it from 0....
Wednesday, 12 February 2020 - 13:26
problem about HD44780 LCD controller
Alright  Thank you all!   I 'm kind of jumping the gun now so..   I'll do one by one what you guys told me.  Thank you!
Wednesday, 9 October 2019 - 13:11
problem about HD44780 LCD controller
clawson wrote: qufekf135 wrote: there is two file, it looks related to LCD control  lcd.h and lcd_control.c You might want to say where you are seeing this. Which C...
Wednesday, 9 October 2019 - 11:35
problem about HD44780 LCD controller
Thank you David   It's first time i've heard about JTAG  I'm gonna search how to JTAG disable in software.   
Wednesday, 9 October 2019 - 10:46