Thanks, Mate! You are my premier "do-to" professor for all things electronics/ARDUINO and on my FB "to share" list. I like your easy style and your sense of curiosity and wonder which are the hallmarks of a great teacher. Keep them coming. BTW, I watch many of your videos with my 6 year old grandson, then we try out some of the simpler projects. The other day he woke me up saying "Pa, there's a new Julian Tut"! I hope the Chinese Ebay sellers are collectively paying you a small fortune for the business you have generated for them.
@JulianIlett
9 жыл бұрын
Hi Derrick. Say hi to your 6 year old grandson.
@DerrickWindsor
9 жыл бұрын
Julian Ilett will do. I'll turn him into a geek if its the last thing I do! Hahahahah !
@-Graham
9 жыл бұрын
"And there's a very good reason for that" -- But I'm not going to tell you bwahahaha!
@chapelchicks8851
3 жыл бұрын
Hi Julian, Enjoyed this very much.
@VideosOmp
9 жыл бұрын
Looking forward to next episode!
@vbisbest
8 жыл бұрын
One of the most helpful videos on the entire internet! 10 out of 10!
@aarondiaz4232
4 жыл бұрын
great video! the best one explaining APA102! keep the great work!
@jusb1066
9 жыл бұрын
ahh, back to the type of videos i like! (terrible hint)
@JulianIlett
9 жыл бұрын
jusb1066 And I like making them ツ
@AtariXcore
8 жыл бұрын
It IS a very interesting system. Printed a data sheet of a magnetometer one day, the look up chart referred you to another look up chart. It's like acronyms that have letters in them that are the beginning letter of another acronym. All a bit complex for me.
@SproutyPottedPlant
9 жыл бұрын
LEDs like that are very exciting! Show more!!
@jessiefeng3269
7 жыл бұрын
Hey. we have more exciting Led designs for you. learn more please link witop-led.en.alibaba.com/ we will give you the best service and designs, jessie Email:jessie@witop-tech.com Phone:0086+15676178187
@Autunite
9 жыл бұрын
That cliffhanger though
@klaernie
9 жыл бұрын
Julian Ilett what a cliffhanger..
@ELECTROHAXZ
8 жыл бұрын
Nice LEDs, but I prefer the other addressable LEDs you showed before, they are very simple with just power, ground, and a single data line.
@FilmFactry
9 жыл бұрын
CLIFFHANGER!!! Will we ever find out why?
@Gameweasel
8 жыл бұрын
You briefly talked about the power supply. Is that a 2 amp supply? I was wondering if you could help with how to power these things and how to figure out what kind of power you need for x number of pixels. I just got a meter at 144/meter. Also I noticed that you don't try to power it directly from arduino which makes sense. I cut open the other end with the power and the black/red power cables are soldered to the same black red that attaches to the arduino. i see that you didn't attach the red (+) line to the arduino. But can I power my arduino (nano) and the led strip from the same power supply? Ultimately I'm using these for things like under counter lighting and interesting wall lighting. I need a solution where I can have a single power supply driving the arduino and the leds. Any helps or further hints appreciated. Love this and the #2 video. Really took the mystery out of these pixels and how to program for them. Thanks!
@camelCased
9 жыл бұрын
Thanks for the video. I am currently using APA102 RGB strip with 60 LEDs for my project with Raspberry Pi. But I find APA102 to be not bright enough for my needs. Are there any brighter strips which I can use instead of APA102 RGB strip? 12V also should be fine if only it has SPI bus with 5V or 3V3 logic levels.
@urbank
7 жыл бұрын
I have made the switch from ws2812 to APA102 and am dealing hoping to expand much the arduino code I have been using to accommodate the additional clock pin. Any suggestions?
@Delorean29
8 жыл бұрын
WS2811 14 X 9 MM. PCB: Can I use green single color against the green side and yellow single color against the green side red against green entrance no RGB LED I mean single colors. Does it work if you set the right color?
@1q1q1q1q1q1q1qw
7 жыл бұрын
i used wsb128b. but after some times they dont work anymore i dont know why some say you should try capasitor or bustermination but that dont work is apa101 more stable ?
@AaronCZim
9 жыл бұрын
That looks like a good interface to make a game of mastermind with.
@sdgelectronics
9 жыл бұрын
I'd use the SPI peripheral rather than bit banging the data out. Good vid.
@JulianIlett
9 жыл бұрын
sdgelectronics Thanks. Yes, shiftOut() is pretty slow - I just used it to keep things simple.
@andymouse
8 жыл бұрын
happy new year !
@inxomnyaa
7 жыл бұрын
Hey, i have a 4 line strip too, but it has 12v, g, r and b. can io set different colors on these too?
@duncanyoung8688
7 жыл бұрын
no
@martienm7527
5 жыл бұрын
The video leaves only a (small) part of the code, can you put the complete code for the Arduino here ? Thanks in advance.
@haz939
8 жыл бұрын
I seems to always get confused with bits and bytes. if there a way to send bits with an arduino or is it easier just to use bytes? I always thought a bits were either a 1 or 0. and bytes were "packets" of ones and zeros.
@vpklotar
8 жыл бұрын
+haz939 One Byte is 8 bits, so yhea. Pretty much a packet of one and zeros but it's still sent out one bit at the time
@PuchMaxi
9 жыл бұрын
The second LED does not come on because 1111 is also the end frame?
@marciolimas
9 жыл бұрын
I want to build a arduino keyboard now. Amazing.
@MotSter
9 жыл бұрын
Yay addressable / shift RGB Leds. Love it.. Wow i really wonder why the second led doesn't come on??? I guess cause it would have made the video over 15 minutes (i so would have stopped watching if it went longer.. haha jokes) .. oh well some day ill know. and i bet i know why any hows .. laughs .. really likes how you most always use a power bank of sorts instead of a bench supply.. great video. BUT really ??? Why APA102 instead WS2812/b appears to be main stream at the moment ignoring older addressable RGB strip / sequenced lighting.. ??? or is this just an additional look at other options? or variable clock? or coding?
@MsOMGwtfnoOb
9 жыл бұрын
you look like a very smart guy but can you use these stuff you have for a beer pong table x5 ?
9 жыл бұрын
It doesn't turn on because you've entered the end frame. That's why there's that additional byte.
9 жыл бұрын
That's also the "very good reason".
@WeebLabs
9 жыл бұрын
These are easily my favorite addressable RGB LEDs, due in large part to their 20KHz PWM frequency. In my experience, anything below 11KHz is both unpleasant to look at and problematic to use for video work.
@yaqwsx0cz
9 жыл бұрын
Otaku+ Have you measured the refresh rate of these LEDs? In my project i need to update color (eg. change from red to green) on 4Khz.
@WeebLabs
9 жыл бұрын
Honza Mrázek Yes, they are 19.5KHz. As for for the maximum update rate, I am not sure.
@yaqwsx0cz
9 жыл бұрын
Otaku+ Thanks for your answer. Just for curiosity - how did you measured it? I thought about it a moment ago and I couldn't figure how would I do it.
@WeebLabs
9 жыл бұрын
Honza Mrázek Ah, my mistake. I misread your question. The maximum frame rate of these modules is 2.5KHz according to the datasheet.
@yaqwsx0cz
9 жыл бұрын
Otaku+ Which version of datasheet do you have? I see only the refresh rate of 400 Hz, which is quite low.
@Meekimotosyoutubechannel
7 жыл бұрын
how did you make the coin buttons? awesome!
@scotty6435
9 жыл бұрын
I'd love to see you use screen recording software and edit commentary over the separate video
@ArsenioDev
9 жыл бұрын
Chris Scott I'd suggest OBS, free and VERY powerful with streaming capabilities
@kyoudaiken
9 жыл бұрын
Also hope that he will give that a try some day. But now that he is using a much higher bitrate for his videos, it's much batter than it used to be. :)
@scotty6435
9 жыл бұрын
That's true. The zoom, fish eye effect, movement and pixelation still makes it pretty tough to follow what's going on though.
@WayneJohnsonZastil
9 жыл бұрын
And what is the very good reason?
@louigi6001
9 жыл бұрын
Can you explain a little better why you're not sending the GLOBAL data byte ?
@JulianIlett
9 жыл бұрын
louigi600 I set the global brightness parameter to it's maximum value. Apparently, the global brightness modulator runs at a few hundred Hertz, so it's visible if you flick your eyes. The main brightness modulator (256 levels for each of R,G and B) runs at 20kHz. I can't see the point of the global adjustment.
@louigi6001
9 жыл бұрын
hum ... that leaves me even more puzzled. I may have used the wrong name for the byte I'm referring to ... but on closer look it's not a full byte so it was just some bits.
@filipkavcic664
7 жыл бұрын
Can this run at frequency of something like 150MHz?
@pretzelogic2689
5 жыл бұрын
I don't believe that any LED strip acts like a shift register.
@buzsikantal5332
9 жыл бұрын
You can find the reason here: cpldcpu.wordpress.com/2014/11/30/understanding-the-apa102-superled/
@JulianIlett
9 жыл бұрын
Buzsik Antal Yes, I don't mind admitting I read this blog while doing my research :)
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