Simply check if 'seconds' is 60 or whatever, if it is, then execute your code. Set a silent timer clock or choose a sound. 15 minute timer to set alarm for 15 minute minute from now.
Free, fun and easy to use 3 hour 8 min clock countdown. 8 Minute Countdown Timer - Colorful and Fun - YouTube Check out this silent one-minute timer with beeps to signal the end.Instructabeats Timers colorfultimer countdown classroomtimer. The interrupt gets called every 1 second and adds 1 to 'seconds'. Online timer with pre-set countdown time for 3 hours 8 minutes. I tested its accuracy and it works consistently down to the microsecond.
Here is a slightly modified program I made to easily set up timed interrupts. 8 Pack Sand Glass Clock Tea Timer Hourglass Set 10/ 15/ 30 Seconds & 1/ 2/ 3/ 5/ 10 Minutes Home Decoration Kitchen Living Room.
#Set 8 minute timer code#
This code sets the prescaler to 1024, as slow as you can get.Ī prescaler of 1024 allows for a maximum time of 8388.608mS or ~8.3 seconds clockSelectBits = _BV(CS12) | _BV(CS10) So, cycles is NOT less than RESOLUTION - 1, therefore it was more than maximum
#Set 8 minute timer full#
If(cycles < RESOLUTION) clockSelectBits = _BV(CS10) // no prescale, full xtalĮlse cycles = RESOLUTION - 1, clockSelectBits = _BV(CS12) | _BV(CS10) // request was out of bounds, set as maximum long cycles = (F_CPU / 2000000) * microseconds // the counter runs backwards after TOP, interrupt is at BOTTOM so divide microseconds by 2 Your code, which would have showed me the library you were usingĪnyway, here is what I found in the library I ASSUME you are using. I had to do alot of googling, which most people WILL NOT DO, simply because you failed to tell us basic things about your problem, such as:
#Set 8 minute timer how to#
First of all, PLEASE read the How To Use This Forum thread before you post.
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