Hoi friends, i want to make a timer, that drives a rgb-led.changing colors works, so no problem with that. In the time frame (all MET) between 22 (10 p.m.) and 10 (10 a.m.) the led should not be active, but in the other time frame between 10 and 22 o'clock . I read out the variable "hour" from a…

hmm, until now i suggested the code should be correct, because i.e. 23 IS > 22 AND < 10 but now you gave a new brain input :roll_eyes: i tried the following with the same result: if ((hour() > 22 || hour() <10)) { rgbColour[0] = 0; rgbColour[1] = 32; rgbColour[2] = 0; } el…

i printed the hour to the serial port and -what's that ? 3385 was the putput....when i print it with the same command earlier, hour, minute and second was displayd correctly. have i to convert the time ? Here are the functions for the time and date: void digitalClockDisplay(){ // digital cloc…

hmm, until now i suggested the code should be correct, because i.e. 23 IS > 22 AND < 10 Please explain how 23 is less than 10.

Trixi: hmm, until now i suggested the code should be correct, because i.e. 23 IS > 22 AND < 10 PaulS: Please explain how 23 is less than 10. I was wondering that too.

Trixi: i printed the hour to the serial port and -what's that ? 3385 I don't see how your code, which prints dots and spaces, will output the above.

if ((hour() > 22) || (hour() <10)) { Watch your parentheses. This will give the hours when you want the lights OFF. Reverse both the '<' and '>' for the hours you want the lights ON. There's no need to check the time again in the else statement, as it will only operate when the if statement is fal…

@ Nick and Paul: that's why i love a forum - if you are stuck in case of "burn out" 8) (it was after midnight here in europe) guys like you helps to keep the focus focused again :smiley: Just as i lay in bed the solution with the "&&", the "&" and the "||" appears in front of my half-closed eyes a…

Let me introduce you to the 'else' symbol: if (hour() > 10 && hour() < 22) { rgbColour[0] = 0; rgbColour[1] = 0; rgbColour[2] = 0; } else { rgbColour[0] = 255; rgbColour[1] = 0; rgbColour[2] = 0; } I advise to write such 'between' statement in a logical …

You immediately see the edge cases. Maybe, but that is not the order people typically think in. If you ask someone to look at that code, and figure out what it does, most people will invert the first test, and say that if it is after 10 and before 22, do something. Writing the code they way you t…

[Time][SOLVED] How to compare hours ?

Projects Programming

nickgammon September 21, 2013, 9:51pm 2

    if ((hour() > 22 && hour() <10)) {

The hour is not going to be greater than 22 AND less than 10 at the same time. Do you mean "or"?

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[Time][SOLVED] How to compare hours ?

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