Remake of the QlockTwo by Biegert & Funk.
Using an Arduino Mega Clone + DCF77 module to get the time.
No buttons needed, just plugin and wait a minute or 2 and it will set the time for you.
This is my first project using an Arduino, or any electronics for that matter.
That looks great! :o
I have been dreaming of building one of these since I first saw the original. I dreamed harder after seeing this instructable build using a self etched pcb board for the display.
Price will depend on the size, I will get back to you on that, probably about £20 (currently about $30 USD) for a square, with mounting holes and all letters laser cut, about 8" sq (21cm for you metric guys :D)
How is the laser cutting involved in here? What do you actually cut? The vinyl sticker?
No, I would not do it with vinyl sticker like the copy one is done. I would laser cut the letters into 3mm acrylic and then you would just light up behind each word.
There may be a problem with that code because it updates the time using a timer interrupt and if this occurs in the middle of your displaytime routine, the relationship between hours, minutes and seconds can be broken. You can fix this by disabling interrupts when accessing the time variables that can be changed in your interrupt handler. But why not replace your interrupt handler with a call to millis().
Something like this code in your loop function:
unsigned long prevMillis;
void loop() {
while( millis() - prevMillis >= 1000){
prevMillis += 1000;
ss++;
if (ss==60) {
ss=0;
mm++;
if (mm==60) {
mm=0;
hh++;
if (hh==24)
hh=0;
}
}
}
// rest of loop code here...
}
Hi RuudBurger - your build looks excellent. Nice finish and it looks so close to the original!
I hope you don't mind but I'm going to just toss mine into the thread.
I built mine into an Ikea frame as I didn't have the tools or skills to do the woodwork. LEDs are controlled by two MAX7219 and time keeping is done with a ChronoDot. Also my first project with the Arduino...
@RuudBurger: I am a bit curious of where you got the custom vinyl sticker. Did you order it from an online shop? Do you have a link? I have been doing some research on where I can order a custom sticker like this, but I am a bit unsure about the quality, precision etc.