I just got an arduino uno r3 and am a total noob so i decided to do a blink code on my macbook pro (old version).
i did the code and i tried to upload it and it said can't open device COM1 no such file or directory. problem uploading to board.
can someone help me? its probably some stupid mistake but i got the arduino 2 days ago and have no clue what to do. thanks!
Take a look at what the folks here did for Macs
https://forum.arduino.cc/index.php?topic=427825.msg3454986#msg3454986
I use a Win7 PC myself.