Hi everyone! Every pin on my arduino works fine but when i set this pinMode(13, INPUT); digitalWrite(13, HIGH); the tiny LED on the board near TX/RX LEDs is dimmed on.. Lucky number 13 ????

Pin issue

system November 15, 2012, 8:13pm 2

weak pull-up.

Topic		Replies	Views
Pin 13 and internal pull up. Bugs & Suggestions	4	5844	May 6, 2021
INPUT_PULLUP QUESTION Programming	8	2364	May 5, 2021
Slow processing? Troubleshooting	11	3324	May 6, 2021
Problem with 2 leds on digital pins Troubleshooting	8	2022	May 6, 2021
Pin 13 w/ led using with pushbutton. Interfacing	5	1763	May 6, 2021