@ctwkkk: I don't make these anymore. BUT nowadays you can get a much brighter unit from others. Google for 'colorduino'. You will need to be familiar with programming in C and feel comfortable with microcontrollers.
@mattYYYz: No I didn't :-) This is an el-cheapo version using shift registers only. All info is on my blog. And the link to that is on my channel page.
Hey is this your own project? If it is you should enter the Nuts & Volts "LED Madness" contest on Facebook. There looking for people to upload a short video of their own LED projects and the top 3 videos with the most votes wins. Just search for Nuts & Volts Magazine on Facebook or visit their site and you'll see a banner at the bottom of the page to enter the contest. I think you might have a good chance with this project. :)
@sacramento2032: there's a section of RAM that is used as a framebuffer. This 'video-ram' is permanently processed by an interrupt routine and translated line-by-line to the color that is requested using PWM. You can find code for this little project on my blog. If you use it, make sure to get the latest version from the software repository page. The code on the individual blog posts is quite outdated.
@Dmac11a666: You'd get a couple of meters of suitable solid core wire or make a couple of connectors with 0.1'' headers. Then the fun begins, i.e. writing the code to synchronize all of them.
@Dmac11a666: If using just 2 boards counts, then there's some info on my blog. It covers making the boards talk to each other. More explicitly one board being the boss and the other one the dumb slave. This can be expanded to more boards. The 'intelligence' of the implementation is your job ;-)
@zupnikal How about a bunch of led with senors that detect your hand above them that then light a couple of colors then turn off...Nothing more...Led table is what im after...
@LazoInerte: Glad to hear. It's just that there were quite a lot of comments going into the direction of your previous one. It is getting on my nerves. Maybe I should just ignore these in the future.
Let me tell you what, little one: once you've got a little older and have had your share of unpleasant 'things' and events, you'll come to realize that there are some very basic things that make you happy, 'just because'. And personally I don't care what other people may or may not think what these might mean. If you think only queer people are allowed to like rainbows, so be it. I don't want to disturb your personal reality any further. Live long and prosper.
what the size of the led panel? and do u have any link to contruct the circuit? cause i'm currently doing a project on this too... need your help badly... =) thanks
@1991evan: it's about 60x60mm. You can find a schematic and demo code on my blog. The link is on my youtube profile page. Be aware that there are more sophisticated designs out there (colorduino / rainbowduino).
@LimitedWard: If the spectrum analysis is done on a PC, then I'd say yes. I know there is a FFT library for the small AVR chips out there, but it might be a bit too much in combination with the matrix code running as well.
@LimitedWard: What I wanted to say is: the matrix board can be told by a real computer what to do, but the computer will have to analyze the music and to decide what pattern should be displayed. Directly feeding the music into the little thing won't work satisfactorily (if at all). Not enough computing power.
@TheNameIsBradley: For starters you _could_ have a look at the demo code for this device, which you can find via my blog. And if it helps, it can be done with an 'Arduino' as well.
@Squashism: Well I'm certainly no genius. And don't think all of this just happened between breakfast and lunch. With enough time and motivation, anybody can do it.
you wrote that you use 74hc595 and PWM. do you use softpw or hardware pwm? If hardware pwm can you set the color for each dot or just for one row or something like that?
It uses an interrupt to generate PWM and not the "fire and forget" built in pwm modules of the microcontroller. Therefore it should be called software pwm. This takes about 50% cpu time.
Yes you can individually control each RGB led - that's the whole point, isn't it?
Code can be found on my blog / github. The link is somewhere on my profile.
@Conj78: If you just need the LED matrix, have a look at "earthshineelectronics". They're UK based.
If you want a "professional" pre-built product, have a look at "seeedstudio". If you want to solder and tinker and build it from scratch, have a look at my blog. I have 2 DIY kits left and I'm in the EU as well ;-)
@zupnikal Awesome. Thanks for the reply. I already have a bi-colour matrix, but this looks sexy. I'm only just getting back into soldering etc after many years of not doing it, so i will probably go for the pre built product.
@mrnick1234567: There's another competitor coming up! IteadStudio is launching the 'Colorduino'. It is software compatible (using their libs) with the Rainbowduino, but uses a more intelligent driver chip to do the heavy lifting. Supposedly this would reduce the amount of work done by the ATmega168, so other stuff can be done without interfering the screen updates and so forth. No specs out yet though.
@abjkilladj If you have 3 colours, then you can flash 2 at the same time to make a third. Do it at varying intensities with any combination and you can make any colour you want from RED, YELLOW, and GREEN.
Still it's magic, but all in the head. Just imagine your brain didn't interpret a RED + GREEN stimulus as YELLOW, but something like a dirty brown. Eating lemon ice cream would lose quite a bit of joy. Phenomenology all over the place. BTW do people still know the movie "Dark Star" ;-) ?
Well. every one see their own color, there is no way to distinguish that, and form a basis. Thus, there may be ppl who see yellow just as you describe, like you see brown.
@hackingwithdylan: Yes, 8bit serial in parallel out shift register with integrated constant current control (the same for all channels though). Yes, that's exactly how the PWM was done. All the pins of an Arduino board? That could work as well, if driving the LED matrix is all you want to do.
@Valkier09: Well, If you're scared of soldering, get the rainbowduino from seeedstudio. It is fully assembled and a "professional product". You'll have to do some reading as to what else you may need to make these things fly. Like a suitable USB/serial adapter and so on.
@hunk0105: between 40 and 50$ + shipping, depending on the manufacturer. This includes the LED matrix and the driver board. My DIY kits (soldering required) are a tiny bit cheaper, SeeedStudio's "RainbowDuino" is somewhere in between. Both need a USB serial adapter to upload code.
@awaqas006: If you're after a ready to use product (assembled), search the web for 'rainbowduino'. If you want to build it yourself and don't mind using a soldering iron, you can find a DIY kit on my blog. The link is on my youtube channel somewhere. Can't post it here.
@zupnikal can this be controled directly buy the computer? where can i get one? pm me please! i need this for a school project and i only have a week left!
Just 1 week, OMG. That's barely enough to think about and write some code if you're just starting.
Yes, it can be controller from a computer, to some degree. You can send little 8x8 images over a virtual serial port (FTDI cable), or make it play short sequences of on board images for example. Or let it react to pressing a button or similar.
But with just one week of time at your disposal... even shipping would take longer I guess. Continue reading the next comment.
Have a look at the RainbowDuino by SeeedStudio. If you're in the US, you can get it from local distributors there.
It is more or less the same thing. It lacks some I/O pins, but if you don't need to react to button presses and solely control it from your computer that doesn't matter. It also works with the Arduino software and they've posted examples on their site as well. You need to get the R-duino, the LED board and an USB/serial adapter. Good luck.
@nukeandfusion: Well, it's just a normal rainbow. Rainbows as such are just a basic optical phenomenon based on multiple reflections and refraction in tiny water droplets. Nothing intrinsically gay about them, unless you choose the somewhat old fashioned meaning of 'colorful' or 'happy' for that word. If the other "gay" movement has chosen a rainbow-imitating flag for their purpose, so be it. The colors are beautiful after all.
Hey, can anyone in the US please tell me where I can find RGB LEDs for cheap in bulk? I have a project in mind that will take hundreds if not over 1000 LEDs, and I can't keep spending $2+ on these things.
To be honest, I have this problem as well. If you're talking about individual RGB LEDs (smd or normal), I didn't find anything better than ebay (seller: jeledhk or topbright88) yet. I haven't ordered directly from a factory in china yet (via aliexpress), but that would only be sensible for orders in the 1000s I guess.
one question!.. do you use one resistor per led (in the cathode) or one resistor per color (one for each anode)??.. i`m assuming they are common cathode, if not, well its the other way arround jeje.. if you coud tellme the schematics that would be great!!.. thanks!!.. saludos desde venezuela!!.. tschüß!! jeje
The LEDs are common anode. One anode powers a single row. Columns are connected by cathode. Therefore I've placed one resistor for each color onto the columns (3x8). Schematics and code can be found on my blog. You will find the link on my youtube profile page.
all of the EXTRA COOL things you can do with LEDs that i'd never have the patience to learn how to do. *sigh*. i'd love a bunch of these for my bike stereo & DJ systems.
hi!. nice work men.. one question?!.. can you tellme a good webpage(s) or book(s) or for infomation about building rgb led matrix??.. i'm trying to make one on my own.. thanks!!...
Have you had any issues with the RGB LED Matrix burning out or anything? I would like to order some today from LEDSEE. I very much appreciate your help!
None have burned out yet. But I'm not driving them up to the maximum current. The only issue I've had so far was color uniformity. The first shipment I got was OK, the 2nd one had quite a lot of modules that had problems with the red leds. So you definitely should work with drivers that can do dot-correction for each pixel.
I am going to use (3) HT1632C which does have some PWM but no dot correction.
I have not been able to find high intensity RGB Matrixes on the web either having in the hundreds while individual RGB LEDs are in the thousands for very bright displays. Is it worth it to hand wire individual RGB LEDs for the super brightness or just accept the RGB Matrixes with ok or adequite brightness?
Hand wiring is insane! You can do it for maybe just one matrix of 8x8, anything more is suicide.
I've built a prototype matrix using individual high power RGB leds and it took me several hours just for stripping the wires, soldering them to the leds, adding shrinking tube ... If you want to use single RGB leds, better make a custom PCB for it. Then you could also add transistors for more current, as shown in the datasheet for the HT1632C.
I ordered 12 of them from Seeedstudio. Unfortunately I needed to use Common Cathode and those are Common Anode so I needed about $50 in NPN and PNP driver chips on both cathode and anode sides. I am currently on my 3rd PCB design to simplify everything. Probably done by christmas.
hi!! im from mex...that´s so interesting, well i´d like to know..how do the leds change of color? i have seen that leds but they just change of color by themselfs..how do you make synchronize the colors? ... i apologize for my bad english...thanks
It works like an old TV with a cathode ray tube. The LEDs are scanned line by line. The human eye is slow enough to make it look like a static image. If you click on my youtube profile you'll find a link to my blog. There you can find code and more explanation. If you want you can also get the PCBs there (quite cheap). From time to time I also sell these on Etsy.
Do you use transitors at all to drive the matrix. For example, do you use the ULN2803A transistor array to drive the cathodes? Could you post the link on your blog how to do the PWM with the HCT595 chips? I just can't imagine how you shift the pulse widths into the HCT595. Thanks for any tips/help.
If you go to /user/zupnikal on the youtube site there will be a link to my blog you can't miss. All you need is there. You can even buy PCBs for it there :-)
I don't use any transistors, just the 74HC595 chips.
Do you have an instructional video or sheets or something to build my own project?
I dont know anything about arduino boards but it seems to be a pretty interesting issue! i wanna learn more about that kind of programation and the possibility of doing things with my pc.
Except for my blog, no. If you want to get started, best go to the arduino homepage. There's a wiki and tutorials and a forum (also with a spanish group).
The LED matrix cost me about 10€, the driver chips (4x) cost 70¢ each, the CPU about 4€. Then some perfboard, wires and so on. The most expensive single part was the USB-serial cable for 20€. If you buy the latest arduino board instead, you can make it work for less than 50€ and will have a lot of fun. More info is available on my blog. The link should be in my youtube profile.
I am building essentially the same thing with the same components. The Sparkfun matrices and controller boards are WAY too expensive. I will check your code but am a little confused as to how to do PWM using the 595s. I have mocked up all pieces and seems to be working (just using a standard Deicimila) and next step is to solder them up. I'm trying to get things as small as possible on some veroboard without doing a whole bunch of wiring but it's not easy.
The PWM is essentially done by refreshing the matrix very very fast. For each refresh the code checks if a single led should be on or off to get a certain brightness level.
Makes sense and makes me think I've tackled things the wrong way. Because of the wiring I can only light a single color at a time, I light all LEDs of a certain color in a given column at a time. This eliminates flicker but means no PWM. I'll try to figure out how that ISR you have is working and use that. Will let you know how it goes.
I've figured out one problem at least. It seems I was basing my testing on RED and GREEN. The forward voltage of RED is much lower than that of GREEN and hence I thought I could only light one at a time. I've switched to BLUE/GREEN for now and the PWM based on your code works GREAT. So now my problem is how to wire this thing to balance out the voltages.
np, as I cannot post any links here I put a link to my blog into my profile. there y'all will find all you need: datasheets, schematic, code, atmega168 hex files. the c-code is meant to be compiled with the arduino environment. otherwise a lot of includes are missing.
the company is called LEDSEE. they've got shops on the ebays, but also ship directly from china. the module is 9 euros, no part number. it's the only rgb one they have. if you google for my post in the arduino forum, you'll get a link with some photos of the device.
HI!! i want one!! Where can i buy thisone? ebay? thank you!
ctwkkk 1 month ago
@ctwkkk: I don't make these anymore. BUT nowadays you can get a much brighter unit from others. Google for 'colorduino'. You will need to be familiar with programming in C and feel comfortable with microcontrollers.
zupnikal 1 month ago
The best...
baterod3 1 month ago
How do you do PWM with the shift registers?
FutureInventions 2 months ago
@FutureInventions: by updating the data very very fast. Today you can easily do it with a library called 'ShiftPWM'.
zupnikal 2 months ago
@zupnikal Cool, thanks!
FutureInventions 2 months ago
@e2thevan clearly you didnt understand my point you troll grfo my nuts and go find somthing better to do with your life. this is me being nice
abjkilladj 4 months ago
Hi, did you transistors for driving the LEDs? How many? How did you configure them? Thank you
mattYYYz 5 months ago
@mattYYYz: No I didn't :-) This is an el-cheapo version using shift registers only. All info is on my blog. And the link to that is on my channel page.
zupnikal 5 months ago
Hey is this your own project? If it is you should enter the Nuts & Volts "LED Madness" contest on Facebook. There looking for people to upload a short video of their own LED projects and the top 3 videos with the most votes wins. Just search for Nuts & Volts Magazine on Facebook or visit their site and you'll see a banner at the bottom of the page to enter the contest. I think you might have a good chance with this project. :)
Endaman07 5 months ago
there is something that I do not understand, how to make each LED change color?
Please somebody explain me.
sacramento2032 6 months ago
@sacramento2032: there's a section of RAM that is used as a framebuffer. This 'video-ram' is permanently processed by an interrupt routine and translated line-by-line to the color that is requested using PWM. You can find code for this little project on my blog. If you use it, make sure to get the latest version from the software repository page. The code on the individual blog posts is quite outdated.
zupnikal 6 months ago
This is what's going to happen:
I have just fave'd this video. I will come back later when I am on acid to watch this.
XmusicXchikkX 6 months ago 3
@XmusicXchikkX: Have fun and watch all the pretty colors.
zupnikal 6 months ago
@zupnikal How would you go about wiring ten of these together?
Dmac11a666 5 months ago
@Dmac11a666: You'd get a couple of meters of suitable solid core wire or make a couple of connectors with 0.1'' headers. Then the fun begins, i.e. writing the code to synchronize all of them.
zupnikal 5 months ago
@zupnikal you know of any tuts on how to do this?
Dmac11a666 5 months ago
@Dmac11a666: If using just 2 boards counts, then there's some info on my blog. It covers making the boards talk to each other. More explicitly one board being the boss and the other one the dumb slave. This can be expanded to more boards. The 'intelligence' of the implementation is your job ;-)
zupnikal 5 months ago
@zupnikal Link?
Dmac11a666 5 months ago
@Dmac11a666: It's on my profile page... for ages ;-)
zupnikal 5 months ago
@zupnikal How about a bunch of led with senors that detect your hand above them that then light a couple of colors then turn off...Nothing more...Led table is what im after...
Dmac11a666 5 months ago
@zupnikal Would i even need and arduino for that?
Dmac11a666 5 months ago
real cool! are you able to sync your device with some music?? like to have a kind of visual equaliser ??
MrVitalic85 7 months ago
@LazoInerte: Glad to hear. It's just that there were quite a lot of comments going into the direction of your previous one. It is getting on my nerves. Maybe I should just ignore these in the future.
zupnikal 7 months ago
Oh well...
Let me tell you what, little one: once you've got a little older and have had your share of unpleasant 'things' and events, you'll come to realize that there are some very basic things that make you happy, 'just because'. And personally I don't care what other people may or may not think what these might mean. If you think only queer people are allowed to like rainbows, so be it. I don't want to disturb your personal reality any further. Live long and prosper.
zupnikal 7 months ago 2
den los cktos almeno
:C
thexmahuriix15 7 months ago
Beautiful!
shadowC10ne 7 months ago
how mutch vold did u use?
PSPENZO1 8 months ago
@PSPENZO1: 5V
zupnikal 5 months ago
This has been flagged as spam show
@PSPENZO1 BWAAAhahaha
"how mutch vold did u use?"
DancingSpiderman 5 months ago
Was wondering where you got your 8x8matrix display and if it hogs up the cpu
bionio1 9 months ago
@bionio1: a) ledsee b) 50%
zupnikal 9 months ago
what the size of the led panel? and do u have any link to contruct the circuit? cause i'm currently doing a project on this too... need your help badly... =) thanks
1991evan 9 months ago
@1991evan: it's about 60x60mm. You can find a schematic and demo code on my blog. The link is on my youtube profile page. Be aware that there are more sophisticated designs out there (colorduino / rainbowduino).
zupnikal 9 months ago
Out of curiosity, could you set up the led display so that it could respond to music sort of like the itunes music visualizer?
LimitedWard 9 months ago
@LimitedWard: If the spectrum analysis is done on a PC, then I'd say yes. I know there is a FFT library for the small AVR chips out there, but it might be a bit too much in combination with the matrix code running as well.
zupnikal 9 months ago
@zupnikal rofl you seem like you know what your talking about. I on the other hand did not understand a word you said :)
I will just assume that what you are saying is yes :P
LimitedWard 9 months ago
@LimitedWard: What I wanted to say is: the matrix board can be told by a real computer what to do, but the computer will have to analyze the music and to decide what pattern should be displayed. Directly feeding the music into the little thing won't work satisfactorily (if at all). Not enough computing power.
zupnikal 9 months ago
Can anyone reference me to a website that teaches how to program these led boards?
TheNameIsBradley 9 months ago
@TheNameIsBradley: For starters you _could_ have a look at the demo code for this device, which you can find via my blog. And if it helps, it can be done with an 'Arduino' as well.
zupnikal 9 months ago
i wish i was smart enough to do this stuff. when i look at the comments im like holy sh*t look at these geniuses!
Squashism 10 months ago
@Squashism: Well I'm certainly no genius. And don't think all of this just happened between breakfast and lunch. With enough time and motivation, anybody can do it.
zupnikal 10 months ago
0:28 the gay flag?
bigvato01 11 months ago
@bigvato01: I don't care... for me this is just a rainbow.
zupnikal 11 months ago 21
@zupnikal
you wrote that you use 74hc595 and PWM. do you use softpw or hardware pwm? If hardware pwm can you set the color for each dot or just for one row or something like that?
marcLGehtRayn 11 months ago
@marcLGehtRayn:
It uses an interrupt to generate PWM and not the "fire and forget" built in pwm modules of the microcontroller. Therefore it should be called software pwm. This takes about 50% cpu time.
Yes you can individually control each RGB led - that's the whole point, isn't it?
Code can be found on my blog / github. The link is somewhere on my profile.
zupnikal 11 months ago
NIce, could anybody enlighen on where to buy this from? Somwhere that ships to the UK.
Conj78 1 year ago
@Conj78: If you just need the LED matrix, have a look at "earthshineelectronics". They're UK based.
If you want a "professional" pre-built product, have a look at "seeedstudio". If you want to solder and tinker and build it from scratch, have a look at my blog. I have 2 DIY kits left and I'm in the EU as well ;-)
zupnikal 1 year ago
@zupnikal Awesome. Thanks for the reply. I already have a bi-colour matrix, but this looks sexy. I'm only just getting back into soldering etc after many years of not doing it, so i will probably go for the pre built product.
Conj78 1 year ago
@zupnikal yes get the rainbowduino from seeed, it's good fun - you can get them from cool components in the UK.
mrnick1234567 1 year ago
@mrnick1234567: There's another competitor coming up! IteadStudio is launching the 'Colorduino'. It is software compatible (using their libs) with the Rainbowduino, but uses a more intelligent driver chip to do the heavy lifting. Supposedly this would reduce the amount of work done by the ATmega168, so other stuff can be done without interfering the screen updates and so forth. No specs out yet though.
zupnikal 1 year ago
Comment removed
mrnick1234567 1 year ago
Hey that looks really cool. I'm not sure I could cope with coding for 160K colours though!
mrnick1234567 1 year ago
@mrnick1234567: more like 32K, but the coding is quite simple. If only the AVR could run at a bit more than 20MHz...
zupnikal 1 year ago
Hey use the arduino to hook it up to music and each pin as a diff color so each color is a note
Mou5Karma 1 year ago
3 colors in the same led??? WOW
PznRen 1 year ago
@PznRen: It's magic!
zupnikal 1 year ago 4
@zupnikal im pretty sure its a whole spectrum in one led because there is more than three colors in this display...
abjkilladj 1 year ago
@abjkilladj: of course ;-)
zupnikal 1 year ago
@abjkilladj If you have 3 colours, then you can flash 2 at the same time to make a third. Do it at varying intensities with any combination and you can make any colour you want from RED, YELLOW, and GREEN.
Kburt101 1 year ago
@abjkilladj
red green and blue create the whole spectrum, genious
e2thevan 1 year ago
@zupnikal RGB = Red Green Blue
geobruce1995 1 year ago
@geobruce1995: I know ;-)
Still it's magic, but all in the head. Just imagine your brain didn't interpret a RED + GREEN stimulus as YELLOW, but something like a dirty brown. Eating lemon ice cream would lose quite a bit of joy. Phenomenology all over the place. BTW do people still know the movie "Dark Star" ;-) ?
zupnikal 1 year ago
@zupnikal
Well. every one see their own color, there is no way to distinguish that, and form a basis. Thus, there may be ppl who see yellow just as you describe, like you see brown.
ida1919 1 year ago
@zupnikal but what kind of magic?
MrBoomshack 1 year ago
@MrBoomshack: Ah ah ah ... every kind of magic is ruined by a good explanation.
zupnikal 1 year ago
@PznRen this is quite old technology
zvaniel4o 1 year ago
Does anyone have code for this display??
zacharybeal 1 year ago
@zacharybeal: that would be me :-)
And if you go to my blog, you can have it too. The link is on my channel somewhere.
zupnikal 1 year ago
Very nice!
purplemutantas 1 year ago
@theaquabot14: Visit my blog, the link is on my channel page. Everything is there.
zupnikal 1 year ago
I need like A BILLION of these 0_o
ilovedisney84 1 year ago
This has been flagged as spam show
go to photonplay . com to buy microcontroller hex codes for all range of led displays
youtube.com/watch?v=Rgdh05LAc 5Q
ledsigns1 1 year ago
Hi !
can you send me an schematic of this?
how you get 24 pmw outputs to drive the colours?
can you give an idea how to do this?
Gruss !!
CxC2007 1 year ago
@CxC2007: Go to my channel and click on the link to my blog. You'll find everything there on the projects page. Schematic, demo code...
zupnikal 1 year ago
Very nice.I'm also developing a display with RGB LEDs. see my channel.
msplace08 1 year ago
@msplace08: You've got the screen grabber software running already. Nice.
zupnikal 1 year ago
@hackingwithdylan: Yes, 8bit serial in parallel out shift register with integrated constant current control (the same for all channels though). Yes, that's exactly how the PWM was done. All the pins of an Arduino board? That could work as well, if driving the LED matrix is all you want to do.
zupnikal 1 year ago
did you just use some shift registers ? :o
Flavio311291 1 year ago
@Flavio311291: for this one yes ;-) a quick hack.
Now I've got lots of MBI5168 sitting in a box and don't have time to make the next version...
zupnikal 1 year ago
oh and where is the link to your blog?
Valkier09 1 year ago
@Valkier09: why does youtube hide it.... If you go to my channel page by clicking on my username, you can't miss it! Profile... website...
zupnikal 1 year ago
can i buy this from you? please?
Valkier09 1 year ago
@Valkier09: Just visit my blog and you'll find a link to the DIY kits.
zupnikal 1 year ago
@zupnikal u sure i just cant buy it from you? im scare that i might mess up
Valkier09 1 year ago
@Valkier09: Well, If you're scared of soldering, get the rainbowduino from seeedstudio. It is fully assembled and a "professional product". You'll have to do some reading as to what else you may need to make these things fly. Like a suitable USB/serial adapter and so on.
zupnikal 1 year ago
how cost this toy
hunk0105 1 year ago
@hunk0105: between 40 and 50$ + shipping, depending on the manufacturer. This includes the LED matrix and the driver board. My DIY kits (soldering required) are a tiny bit cheaper, SeeedStudio's "RainbowDuino" is somewhere in between. Both need a USB serial adapter to upload code.
zupnikal 1 year ago
como se llaman esas luces???
kasimiro79 1 year ago
@kasimiro79: RGB LED matrix ? You can get them at 'ledsee' or 'seeedstudio'. You'll find them using google
zupnikal 1 year ago
gay flag lol
InfiniteSoft 1 year ago
@InfiniteSoft
People seem to be strangely obsessed with this topic. Before it was brought up here, I didn't even know about it.
zupnikal 1 year ago
Wicked, where can i can one of these from???????
awaqas006 1 year ago
@awaqas006: If you're after a ready to use product (assembled), search the web for 'rainbowduino'. If you want to build it yourself and don't mind using a soldering iron, you can find a DIY kit on my blog. The link is on my youtube channel somewhere. Can't post it here.
zupnikal 1 year ago
@zupnikal can this be controled directly buy the computer? where can i get one? pm me please! i need this for a school project and i only have a week left!
firestormpcs 1 year ago
@firestormpcs:
Just 1 week, OMG. That's barely enough to think about and write some code if you're just starting.
Yes, it can be controller from a computer, to some degree. You can send little 8x8 images over a virtual serial port (FTDI cable), or make it play short sequences of on board images for example. Or let it react to pressing a button or similar.
But with just one week of time at your disposal... even shipping would take longer I guess. Continue reading the next comment.
zupnikal 1 year ago
@firestormpcs:
Have a look at the RainbowDuino by SeeedStudio. If you're in the US, you can get it from local distributors there.
It is more or less the same thing. It lacks some I/O pins, but if you don't need to react to button presses and solely control it from your computer that doesn't matter. It also works with the Arduino software and they've posted examples on their site as well. You need to get the R-duino, the LED board and an USB/serial adapter. Good luck.
zupnikal 1 year ago
Is this the gay flag?
nukeandfusion 1 year ago
@nukeandfusion: What are you talking about? Enlighten us.
zupnikal 1 year ago
the colours reminds me the gay flag colours :)
nukeandfusion 1 year ago
@nukeandfusion: Well, it's just a normal rainbow. Rainbows as such are just a basic optical phenomenon based on multiple reflections and refraction in tiny water droplets. Nothing intrinsically gay about them, unless you choose the somewhat old fashioned meaning of 'colorful' or 'happy' for that word. If the other "gay" movement has chosen a rainbow-imitating flag for their purpose, so be it. The colors are beautiful after all.
zupnikal 1 year ago
@zupnikal Thanks for the analysis...But it stills reminds me of the flag :)
by the way, by saying that the colours are beautiful you want to point something? ;)
nukeandfusion 1 year ago
@nukeandfusion:
Yes.
This sums it up pretty good: "MnFMrNdj1yY". As youtube chooses to forbid links, even to its own site, I've just posted the video's ID.
zupnikal 1 year ago
安特性交大家
pantzossta 1 year ago
Hey, can anyone in the US please tell me where I can find RGB LEDs for cheap in bulk? I have a project in mind that will take hundreds if not over 1000 LEDs, and I can't keep spending $2+ on these things.
psyclistic 1 year ago
@psyclistic:
To be honest, I have this problem as well. If you're talking about individual RGB LEDs (smd or normal), I didn't find anything better than ebay (seller: jeledhk or topbright88) yet. I haven't ordered directly from a factory in china yet (via aliexpress), but that would only be sensible for orders in the 1000s I guess.
zupnikal 1 year ago
very nice :D
finalfantasyiscool22 1 year ago
do u sell a circuit to make one of these ??
alan19861 2 years ago
I have a few DIY KITs available. Just have a look at my blog.
zupnikal 2 years ago
sweet, i will check your blog
orbitalchiller 2 years ago
one question!.. do you use one resistor per led (in the cathode) or one resistor per color (one for each anode)??.. i`m assuming they are common cathode, if not, well its the other way arround jeje.. if you coud tellme the schematics that would be great!!.. thanks!!.. saludos desde venezuela!!.. tschüß!! jeje
F3rnando666 2 years ago
@F3rnando666
The LEDs are common anode. One anode powers a single row. Columns are connected by cathode. Therefore I've placed one resistor for each color onto the columns (3x8). Schematics and code can be found on my blog. You will find the link on my youtube profile page.
zupnikal 2 years ago
Can you share code and instruction
brzi1973 2 years ago
@brzi1973
Sure. Go to my youtube profile page and click on the link to my blog.
zupnikal 2 years ago
How were you able to PWM so many outputs? How can you PWM those driver chips when you are sending the data in serially?
elimenohpee182 2 years ago
Una explicadita no caería mal
20182584 2 years ago
@20182584:
What exactly do you want me to explain ?
zupnikal 2 years ago
nice PWM, what clock rate are you using, must be up in the MHz to get the range of colours.
speaking of which .. how many graduations per colour are you using .. must be at least 32 per colour ?
Colhoon 2 years ago
The cpu clock is 16MHz, the screen refresh rate is about 50Hz. Color depth is 5bit per color, which is 32 steps ;-)
zupnikal 2 years ago
1:12 is the best moment
MsCheetos123 2 years ago
roflmao.
zupnikal 2 years ago
Really, really nice. What kind of LEDs are those that change color?
lifeincolour09 2 years ago
Well RGB LEDs ;-)
Or what did you have in mind ?
zupnikal 2 years ago
all of the EXTRA COOL things you can do with LEDs that i'd never have the patience to learn how to do. *sigh*. i'd love a bunch of these for my bike stereo & DJ systems.
cool project
dubhippy 2 years ago
hi!. nice work men.. one question?!.. can you tellme a good webpage(s) or book(s) or for infomation about building rgb led matrix??.. i'm trying to make one on my own.. thanks!!...
Saludos desde Venezuela!!..
F3rnando666 2 years ago
Well, you can have a look at my blog.
And of course the arduino forum !
zupnikal 2 years ago
ok men!:. thanks!.. will do!!..
F3rnando666 2 years ago
you should program it to make pac-man : D
gpetters 2 years ago
what type of arduino did u use?
rancid84 2 years ago
At this stage I just used an ordinary Diecimila board and a few 74HC595 shift registers, resistors and tons of wires.
zupnikal 2 years ago
Really cool! I'm thinking of making something similar to put inside my plasma domes.
PlasmaTronics1 2 years ago
nice.... i'm getting one of these
AndrewFaulds 2 years ago
Have fun !
zupnikal 2 years ago
Excellent Project !
2N2222A 2 years ago
how much did it cost?
hiyaitsmejoel1 2 years ago
LED matrix: 9€ + 3€ shipping + 19% import tax
rest of electronics: about 10-15€
zupnikal 2 years ago
Have you had any issues with the RGB LED Matrix burning out or anything? I would like to order some today from LEDSEE. I very much appreciate your help!
tdg8934 2 years ago
None have burned out yet. But I'm not driving them up to the maximum current. The only issue I've had so far was color uniformity. The first shipment I got was OK, the 2nd one had quite a lot of modules that had problems with the red leds. So you definitely should work with drivers that can do dot-correction for each pixel.
zupnikal 2 years ago
I am going to use (3) HT1632C which does have some PWM but no dot correction.
I have not been able to find high intensity RGB Matrixes on the web either having in the hundreds while individual RGB LEDs are in the thousands for very bright displays. Is it worth it to hand wire individual RGB LEDs for the super brightness or just accept the RGB Matrixes with ok or adequite brightness?
Thoughts...Comments?
tdg8934 2 years ago
Hand wiring is insane! You can do it for maybe just one matrix of 8x8, anything more is suicide.
I've built a prototype matrix using individual high power RGB leds and it took me several hours just for stripping the wires, soldering them to the leds, adding shrinking tube ... If you want to use single RGB leds, better make a custom PCB for it. Then you could also add transistors for more current, as shown in the datasheet for the HT1632C.
zupnikal 2 years ago
Did you end up ordering any? I ordered some from LEDSEE a month ago, and now I can't get in contact with them via any means.
dohzer13 2 years ago
I ordered from them multiple times. Shipment takes a while. I sent you a PM!
zupnikal 2 years ago
I ordered 12 of them from Seeedstudio. Unfortunately I needed to use Common Cathode and those are Common Anode so I needed about $50 in NPN and PNP driver chips on both cathode and anode sides. I am currently on my 3rd PCB design to simplify everything. Probably done by christmas.
tdg8934 2 years ago
can someone plz tell me what this is called, and by that i mean like ex. ledding or lightingmods or something
flamer4625 2 years ago
Is is like green+red+blue led in one? like 3Vcc and 1gnd right?
IDStatic 2 years ago
a) yes
b) in this case it's 1x Vcc and 3x GND
zupnikal 2 years ago
Thx for reply! Im a future technician (just finished my 1st year) and im very interessed of project like that!
IDStatic 2 years ago
hi!! im from mex...that´s so interesting, well i´d like to know..how do the leds change of color? i have seen that leds but they just change of color by themselfs..how do you make synchronize the colors? ... i apologize for my bad english...thanks
lopoldoernesto 2 years ago
It works like an old TV with a cathode ray tube. The LEDs are scanned line by line. The human eye is slow enough to make it look like a static image. If you click on my youtube profile you'll find a link to my blog. There you can find code and more explanation. If you want you can also get the PCBs there (quite cheap). From time to time I also sell these on Etsy.
zupnikal 2 years ago
very nicer
nycpntr 2 years ago
are y from gemany?
manuman333 2 years ago
what if ?
zupnikal 2 years ago
lol it was goin crazy
9852323 2 years ago
how led driver do you use ??
michalj8787 2 years ago
4x 74HCT595 shift register + software PWM (interrupt driven)
It's all in my blog. You can find a link to it if you click on my youtube profile.
zupnikal 2 years ago
Do you use transitors at all to drive the matrix. For example, do you use the ULN2803A transistor array to drive the cathodes? Could you post the link on your blog how to do the PWM with the HCT595 chips? I just can't imagine how you shift the pulse widths into the HCT595. Thanks for any tips/help.
unebonnevie 2 years ago
I can't post links on the comments.
If you go to /user/zupnikal on the youtube site there will be a link to my blog you can't miss. All you need is there. You can even buy PCBs for it there :-)
I don't use any transistors, just the 74HC595 chips.
zupnikal 2 years ago
Maybe have a look at these chips:
- M54564P/FP
- MBI5168
zupnikal 2 years ago
thanks a lot about the information!
Do you have an instructional video or sheets or something to build my own project?
I dont know anything about arduino boards but it seems to be a pretty interesting issue! i wanna learn more about that kind of programation and the possibility of doing things with my pc.
Ps: sorry for my english, i speak spanish
Regards
Mario
imdjmar 3 years ago
Except for my blog, no. If you want to get started, best go to the arduino homepage. There's a wiki and tutorials and a forum (also with a spanish group).
zupnikal 3 years ago
hi! , how much does the project costs you? and do you have the schematics or something to build my own project?
regards
Mario
imdjmar 3 years ago
The LED matrix cost me about 10€, the driver chips (4x) cost 70¢ each, the CPU about 4€. Then some perfboard, wires and so on. The most expensive single part was the USB-serial cable for 20€. If you buy the latest arduino board instead, you can make it work for less than 50€ and will have a lot of fun. More info is available on my blog. The link should be in my youtube profile.
zupnikal 3 years ago
I am building essentially the same thing with the same components. The Sparkfun matrices and controller boards are WAY too expensive. I will check your code but am a little confused as to how to do PWM using the 595s. I have mocked up all pieces and seems to be working (just using a standard Deicimila) and next step is to solder them up. I'm trying to get things as small as possible on some veroboard without doing a whole bunch of wiring but it's not easy.
fshanahan 3 years ago
The PWM is essentially done by refreshing the matrix very very fast. For each refresh the code checks if a single led should be on or off to get a certain brightness level.
zupnikal 3 years ago
Makes sense and makes me think I've tackled things the wrong way. Because of the wiring I can only light a single color at a time, I light all LEDs of a certain color in a given column at a time. This eliminates flicker but means no PWM. I'll try to figure out how that ISR you have is working and use that. Will let you know how it goes.
fshanahan 3 years ago
I've figured out one problem at least. It seems I was basing my testing on RED and GREEN. The forward voltage of RED is much lower than that of GREEN and hence I thought I could only light one at a time. I've switched to BLUE/GREEN for now and the PWM based on your code works GREAT. So now my problem is how to wire this thing to balance out the voltages.
fshanahan 3 years ago
All in processing?
5imian 3 years ago
Hmmm. I used the arduino environment, so it is C/C++ I think.
zupnikal 3 years ago
very nice. now let's see doom running on it :)
DanFrederiksen 3 years ago
LOL. Maybe I can have it display a medkit :-)
zupnikal 3 years ago
np, as I cannot post any links here I put a link to my blog into my profile. there y'all will find all you need: datasheets, schematic, code, atmega168 hex files. the c-code is meant to be compiled with the arduino environment. otherwise a lot of includes are missing.
cheers
zupnikal 3 years ago
where can i find an rgb matrix by ebay? i cant find any..
dremler 3 years ago
you need to go to the 'stores' category on any ebay site and search for ledsee (by store, not by item)
zupnikal 3 years ago
hey nice job ...
you dont know how long i was looking for cheap rgb led matrices (sparkfuns are much more)
the seller on ebay doesnt say whether the matrix he is selling is common anode or common cathode ..
can you tell me ?
partyboarder 3 years ago
the matrix is configured like this:
common anode for each row, common cathode for each column per color. there is a pdf spec sheet on the ledsee_d*t_c*m website.
zupnikal 3 years ago
Could you tell me the manufacturer and item number of the rbg matrix? Thanks!
Baliszoft 3 years ago
the company is called LEDSEE. they've got shops on the ebays, but also ship directly from china. the module is 9 euros, no part number. it's the only rgb one they have. if you google for my post in the arduino forum, you'll get a link with some photos of the device.
zupnikal 3 years ago
Thanks a lot! I've found it!
Baliszoft 3 years ago
What ISR chip(s) are you using ?
myozone 3 years ago
I just use 4x 74HC595 shift registers. Luckily the leds don't need that much current. To get them even brighter I mi