Thanks! No I had to work out the maths, but TBH it was a trial and error approach on the light phasing based on value of hardware timers. Theres a link to the Arduino code in the description
Bloody brilliant! I'm sure I've seen those TDA chips in things like CD players. I've never had much success powering one up, so I might see what I can learn from your design notes and have another go : D
Crikey - that is incredible although I still can't quite grasp how it works (despite your detailed explanation - that says more about me!) but that doesn't matter! Excellent work.
You had me for a second there :) Seriously though, this took ages to make and I'm not sure how long it would last. If I had the time I'd consider it, but thanx for your interest and comments
excellent concept. So in order to display 8 digits . ie: "10:47:01", you need to make 8 revolutions? (one rev per digit) or do you draw all the 0's in one revolution, all the 1's in the second etc? Or do you go further and try to display multiple digits per pass, depending on their relative sequence on the wheel? Guess these optimizations might reduce average render time, but produce variable brightness. ie "11:11:11" would be much brighter than"10:28:43"
All the digits and colons are shown once every revolution.. it actually works by dividing the whole revolution into a 256 step array, then works out - once per second - which of the 6 segments (plus the 2 colons) to light up at each of the 256 steps . This is when the correct digit(s) are directly overhead those segment(s). Interrupt handlers update the LEDs on every revolution using that content of the array. Double buffering is used when the array is updated to stop glitching. In theory 2 segments could light up at exactly the same instant if the right digit was over each one at the same time. The LEDs behind each segment only stay on for a tiny moment of time (1/256 revolution time)... Simples!
Jason Hotchkiss Ah right. For some reason I had made the assumption the segments on the left had to lit up before the segments on the right. I guess this would be the case if the LEDs were affixed to the rotating segments themselves. That being said, you could replace the cut-out segments on your disk, with lightweight 3D hollow shapes and make an actual 3D clock. Even have a few versions of each digit to animate the transitions. Now that would be even more nifty. Anyways, great channel you have!
Jason Hotchkiss i probably think so We have to make a project with the atmega8 and i like your clock. Atm i have no idea whats the difference between the atmegas We didnt started to programming :D
the idea is nice, but so freaking noisy, I find this more like a challenge, to see if you can really do it..... I did a Nixie clock to have something cool but silent... now I find it too bright.. haha
Thanks! No I had to work out the maths, but TBH it was a trial and error approach on the light phasing based on value of hardware timers. Theres a link to the Arduino code in the description
Bloody brilliant! I'm sure I've seen those TDA chips in things like CD players. I've never had much success powering one up, so I might see what I can learn from your design notes and have another go : D
Crikey - that is incredible although I still can't quite grasp how it works (despite your detailed explanation - that says more about me!) but that doesn't matter! Excellent work.
You had me for a second there :) Seriously though, this took ages to make and I'm not sure how long it would last. If I had the time I'd consider it, but thanx for your interest and comments
thats a great build, love that you can time the lights. did you have to figure the maths for it or is it a general library ?
1st time seeing this combination of display 👍
No need for an alarm , you won't sleep with the noise of that . great idea all the same.
this thing would keep me up at night
At first I was like: Okay, another POV HDD clock... but when you turned it around I was like: WOW!
That's some great looking device!
Impressive. And it looks so cool.
Could you use the brushless motor controller that came with the hard disk?
If Philo Farnsworth had never invented the CRT TV, this could be a modern replacement for the Baird style mechanical TV.
Wow, that is a very nice clock! But can u use as a normal clock or is it too noisy?
If you reach over in the morning to snooze your alarm, this thing will chop your fingers off.
excellent concept. So in order to display 8 digits . ie: "10:47:01", you need to make 8 revolutions? (one rev per digit) or do you draw all the 0's in one revolution, all the 1's in the second etc? Or do you go further and try to display multiple digits per pass, depending on their relative sequence on the wheel?
Guess these optimizations might reduce average render time, but produce variable brightness. ie "11:11:11" would be much brighter than"10:28:43"
All the digits and colons are shown once every revolution.. it actually works by dividing the whole revolution into a 256 step array, then works out - once per second - which of the 6 segments (plus the 2 colons) to light up at each of the 256 steps . This is when the correct digit(s) are directly overhead those segment(s). Interrupt handlers update the LEDs on every revolution using that content of the array. Double buffering is used when the array is updated to stop glitching.
In theory 2 segments could light up at exactly the same instant if the right digit was over each one at the same time. The LEDs behind each segment only stay on for a tiny moment of time (1/256 revolution time)... Simples!
Jason Hotchkiss Ah right. For some reason I had made the assumption the segments on the left had to lit up before the segments on the right. I guess this would be the case if the LEDs were affixed to the rotating segments themselves.
That being said, you could replace the cut-out segments on your disk, with lightweight 3D hollow shapes and make an actual 3D clock.
Even have a few versions of each digit to animate the transitions.
Now that would be even more nifty.
Anyways, great channel you have!
Holy shit - that is awesome - kudos!
cool but how do you make the CD? (Disk) but i prefer Propeller Clocks instead because they look like HOLOGRAM!
You are a genius!
wow! very good job!!
Why is it louder than a nomral hard drive?
Does the digit plate have something like a heavy spot?
Up to which frequency does the sensor work?
You, sitting on the table to eat. *srrrrrhrrrrssrrrrrrrr*
Very cool!
I love it. great clock
but...will it blend?
thanks - i just made it for fun, i don't use it as an everyday clock as it's noisy like you say
Extensive and time-wasting tests have shown that due to the level of badassery in this product, it will not blend.
It is a brilliant idea, however the noise makes it completely impractical.
Hello..
I'm 1000th Subscriber..!!! :)
I'm from Vietnam..
can you tell me, which controller you used to controll the BLDC Motor?
Sure, TDA5144AT - check the link in video description. I also sell a breakout board for them on Tindie
can i buy it???
Hola amigo tengo que hacer un proyecto y quisiera saber si me podrías ayudar con algunos materiales y diagramas para hacerlo paso a paso....saludos
WOULD YOU SELL IT?
fantastic, but too loud for my bedside table!!!
Excellent! "A bit pointless" but really good work! Bows... :)
This is Great!
awesome, i think id prefer the tick of a normal clock though :)
Can you realise this with an AVR ATMEGA8?
yeah probably - I think the 8 is same architecture as the 328 but with less RAM right?
Jason Hotchkiss i probably think so
We have to make a project with the atmega8 and i like your clock.
Atm i have no idea whats the difference between the atmegas
We didnt started to programming :D
It would be cool to put one of those inside a sealed box and pump out the air to make it noiseless.
How to build the POV Clock: www.instructables.com/id/Recycled-Hard-Drive-Clock-FuneLab/
sorry I am unable to make these to order due to lack of time
How is this weird?
If you don't mind having a clock that sounds like a jet engine or table saw! :P
Sweet. If it wasn't so loud I'd pay you a lot of $ to have one of those.
new way to make a countdown display for a bomb :P XD
Well. Time to change this to daylight savings time. Oh wait. Shit.
Will it work with a solid state drive ;)
of course! but you just have to spin your head very fast ;)
Jason you make my head spin ;)
Um relogio digital custa tao barato que ainda não sei o que faria com um trem deste barulhento em minha mesa
Wow!!
Got a nice clock. Sounds like a helicopter..
the idea is nice, but so freaking noisy, I find this more like a challenge, to see if you can really do it..... I did a Nixie clock to have something cool but silent... now I find it too bright.. haha
$50,000?
my son really wants it.
des find ich au so krass .. die timings ..
awsome :D
just kidding... lol amazing build!
there's a BIT of stuff at the back A BIT He SAYS!
I think i am at the wierd part of youtube now. ;)
I would buy this if you sold it... seriously.
I have a motor from a hard drive can you show us how to build one!
like if you agree!
ask him to put it in a soundproof case!
Pfff, its only slightly deadly
a very loud clock :D
Loudest clock ever.
Looks cool but commercially impractical due to the fact its NOISY!! lol.
Not if you put it in a vacuum.
That awesome I wont one in the furture
This isn't wierd.
no sorry
Reloj de escritorio y ventilador portátil, flexible, USB, con pantalla LED amzn.to/2owwpR5
press 1, 9, 8, 0 for fun
сильно гудит
Шарап сан оф да бич. А сделайте на русскам плиз
Cool, but sounds like a lawnmover. lol
nothing is pointless
noisy