[Borg3]

Like fucking what? If you do any TS.. you just use unsigned whatever fastest type you have on targeting platform, and you do NOT care. 16bit? wrapping at 1 min? Thats eternity even on 2MHz 6502... You just count and substract to get difference. Usually you are <1000ms range.. so wrapping is not a problem..

If you target about 32bit and 16bit, you either think about and using long (on 16 bit is more costly) or you just count seconds.. Or ticks.. or whatever you need.

[direwolf20]

cool, it's an app that lets me set a 2 minute timer and counts in milliseconds, oh what's that, it doesn't work right on Arduino

[Borg3]

Then use long.. Does Arduino CPU cannot do 16bit add/sub with carry? wtf?