![]() ![]() Simply check if 'seconds' is 60 or whatever, if it is, then execute your code. When Pot is maximum R is 120K+1.1M 1.2M (approximately) and C1470uf. Taking the 5 minute test is a good indicator of your speed, but 1 minute is enough for fun. This is great for overall keyboarding and typing skills. Time period can be calculated using formula. Practice your keyboard typing speed here with words or sentences in many different languages with this free online 1 minute typing test. The interrupt gets called every 1 second and adds 1 to 'seconds'. The above proposed circuit is a 1-10 minute timer.When Pot is minimum it gives 1 minute delay,where maximum value of pot can produce 10 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. Dash line circles, which can be toggled on or off in the lower left-hand corner, help students see which minute or hour the hands are pointing to. 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) Conveniently, the clock features minute markers around the outside, helping young students learn to read the analog. 1-48 von 496 Ergebnissen oder Vorschlägen für '1 minute timer' Ergebnisse. So, cycles is NOT less than RESOLUTION - 1, therefore it was more than maximum ![]() 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: First of all, PLEASE read the How To Use This Forum thread before you post. ![]()
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