Let's Make Robots!

644

log. voltage

Hi, in my new robot I am using ATmega644, but I need hepl with log. votage. In AVR Studio I set PB7 out and set log 1, but when I measure voltage between PB7 and GND, multimeter shows 0.8 - 1.1 V. Had anybody same problem? But it is not only PB7.  The 0.8 - 1.1 V are on all ports. When I put atmega in to breadboard everything is OK.

I have connected LCD to PORTB and PB7 is controlled backlight. When PB7=1 then backlight on but when I measure voltage on PB7, multimerer shows 0.8 Volts.

 

Atmega - Programming Flash .. FAILED!

Hi, when I want put program in to Atmega644 it shows: Erasing device .. FAILED! , but when i click on "Read Signature" everything is OK. I am using programmer compatible with STK500 and AVR studio. Help please.