ArduinoUNO Pin 3 problem!

After several days of testing with Shield Protoneer 3.0 + fw GRBL 1.1f, perfectly working, I decided to test the modified fw 0.9i for Servo on Z axis and the first problems started ... the Y axis stopped working and after several checks on the cables I realized, through a small control sketch on the digital ports, that the digital pin 3 of the Arduino Uno, the one that sends steps pulses to the Y driver, no longer works. AtMega328 burned or recoverable?

It is possible a power return in case i have moved the Y plane manually? Probably the digital output 3 is burned out :frowning:

Hi,
Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html

What model Arduino do you have?
Has it got the DIL type controller IC?

Tom... :slight_smile:

This one...

Probably the digital out 3 is burnt. I have already ordered a couple of spare atmega328 that I will reprogram via ISP with the bootloader...

Thanks