When he turned on the alarm, I was like "OMFG!! THAT IS THE SAME EXACT NOISE MY ALARM MAKES!!! I FEEL YA GAV!!" It annoys the shit outta me! So, um, here Gavin...you can have mine! DESTROY IT!!
I almost couldn't finish this video, my alarm clock makes the exact same noise and hearing it go on and on like that filled me with near crippling panic and dread. Thank all that is good and holy that sledgehammers exist.
My alarm clock sounds like the beeping in those hospital heart things. once, my mom was watching a TV show with someone in the hospital, and in my room thinking'' man my alarm clock is so annoying i can physically hear it without it going off''
That beeping made everything in my body try to flee. Blood started to pour out of my nose/mouth/ears/eyes. My eyes popped out of their sockets and imploded into oblivion. My ears are shriveled and the cartilage, blood, and veins have melted into a mucus like pus. My heart literally jumped into my mouth, seeking the quickest way out. Along with my heart came my lungs, kidneys, liver, stomach, appendix, and intestines. But, above all, my feces still lying inside me escaped. I shit my pants.
In case anyone is interested, it's not a lack of processing power that limits only certain parts to be lit at a time. Alternating between which segments are powered uses a technique called time multiplexing which saves on IO pin use. It's a smart trick that saves cost and has no down side when viewed by human eyes because our persistence of vision is much longer than the time it takes to light the segments sequentially.
It flashes back and forth to save power. It takes more power to keep every segment on at once. Instead it flashes between segments at a rate faster than the bare eye can see. Computer screens do that too which is why if you use a video camera to look at a monitor it always has lines running down it.
I would like to point out... The clock refreshes in "halves" because it's actually saving energy. By just show half on a flicker of a high enough rate, your mind can't tell, but it saves energy over time for it to not have the whole thing lit up.
i was on the verge of crying from hearing the sound of that beeping cause that's the EXACTLY the noise i wake up to at "riiiiidicoulous hours in the morning"
I like the beeping in slowmo & also liked the way the clock's frame backfired into the sledge hammer. BTW I heard there's another term for slow motion (slowmo), it's called "Mire" =)
The reason the display updates like that is because of display multiplexing, where you only update parts of a display at a time. The human eye cannot react fast enough to see the changes so it looks like a solid image, this is a result of persistence of vision. Multiplexing a display has many benefits, it uses a lot less power, a smaller microcontroller is required (less outputs).
My alarm clock is just like this. I wish I could wake up to something more calming and relaxed instead of annoying the hell out of me and pissing me off as I wake up.
I don't think it's the 50Hz power source that causing the display to look like that. Those LEDs would be running on DC power. Seven segment displays are usually connected to a timing circuit that provides a square wave current which halves the average power draw. This was done originally to extend battery life (although it doesn't matter all that much when it's plugged into the mains of course).
actually, the reason the time looks so odd is because it's using something called "multiplexing". the display is an LED matrix, and to light up the segments, it applies power to a specific row and column to light up the segments. some segments can be done together at once, but others will light up other unwanted segments. multiplexing solves this by lighting the first set of segments, then rapidly switching to power the other set of segments, and it does this rapidly enough that it cannot be distinguished as two separate lights. that's why you see a bit of flickering if you wave your hand by an LCD like this, and why it looks odd on slow-mo. it's nothing to do with processing power, just with how LED matrices work.
Updating display is not about the processing power. It is the way that this kind of segment display works. If I recall it correctly it should be called multiplexing.
Actually most alarm clocks etc. drive their displays that way. It's called multiplexing, and it enables you to drive the seven segment display with alot less wires than you would normally need, by alternately displaying part of the image. Even many computer lcds and such use multiplexing while refreshing the displayed content... ;) May by the way be interesting to film different types of displays in slow motion. Most modern computer lcds will show a steady image, and just not refresh the whole screen at once, rather than actually displaying different parts. But it'd probably still be interesting to see how different displays really refresh their images.
Gav, if you would like to improve your Sledge Hammer swing, I suggest getting your guide hand closer to the head as you limber it out and Keep it there longer through your swing. the backswing should be long and smooth and as you top the APEX you apply power and bring it over. I grew up splitting wood using 3.5kilo "splitting maul" and a double bit axe. Been swinging things since I was 10 or 11. Yeah, dad believed in child labor. hehe.
Here's what you do: cut a grape in half the short way, leaving a thin piece of skin holding it together. Put the grape in a microwave under a glass cup, but tilt the cup with a toothpick or something so it has air. When you turn the microwave on, this will form plasma inside the cup. Film this in slow motion please, and leave the sound on it sounds really cool. Caution: do outside with microwave you don't care about. Forms noxious fumes.
that sound is the same as my alarm clock i heard it and instantly a feeling of fear came over me and i had the tinest moment where i thought i had to go to school
