Retrobrad Presents! A Spinning LED display!

[Carliiitozz]

hello, your project is very interesting and I would like to know about your diagram and code that uses what I could provide you entering your website but no details on this will really appreciate it if you give me infor about your project my email is darkboy.devil @ gmail.com thanks and good video (Y)

[pimpbenben]

Did you use clear leds or diffused ones?

[MrNeoFromMatrix]

can you send me the code and shematics ?

thanks

[motorkola2]

I had a frisbee once that had this kind of technology on it does anyone know where to get one?

[mpigoli]

Muito bom...

[Cwafter]

@ShinobiGarth Funny until someone pokes it...

[josifdcooper]

\\\\\\\\\\ IBM //////////

[ShinobiGarth]

i can see these being used as signs in the future. hundreds or thousands of smaller, brighter LEDs mounted on a spinning thing on a 15 foot pole used to make really good looking signs, like in a shopping mall showing where key areas of the store like the food court is or something. also for advertisements. im surprised its not really being used right now

[punkdane]

hey brad, I have a question, hmn, firstly, i am a newbie in the field of microcontrollers, hmn,, i would just wanna ask if a hex from a project would still run in a different microcontroller? example, in ur "the great race" project, u used pic16f628, i wanetd to use the hex file of it in my pic18f1320, what changes do i have to make? or it ist okay if i just load the hex file to it and just re-arrange the pin out to match the pin out of that of the pi16f628...

thanks,,,

[Ratacon2004]

So easy to create so many cool effects with LED lights. I dont get why companies dont start doing this out side their stores,floor tiles,wall,etc.... I like to go to a theater and see out side real big letters the Theaters name in those type of light effects.We are in 2011 and no one is doing nothing cool.Everything needs to start looking more and more futurastic.

[arth1786]

hi! can you give me the schematic diagram of your propeller and its source code? I need it as soon as possible....please..

[00retrobrad00]

@arth1786 You can get all the details on how to build your own on my website. just check out my channel for the link.

I have also made an updated version that I have posted to instructables. Just goto the instructables web site and search for one chip pov

[TheKaos90]

omg that looks awesome , like it is edited in boujou or after effects :) , though it's real.What controller are you using for the LED's , that must be some serious hardware

[00retrobrad00]

@TheKaos90 Thanks!

The images are edited in a basic excel spreadsheet that allows you to select different colors and then draw them into an 8x85 grid.

The hardware is quite basic and you can find all the details to make this project on my website:

wwwdotbradsprojectsdotcom

(just click on projects and then 8x85 POV display)

[00retrobrad00]

I am not sure to be honest, It just involves a little bit of trial and error. If the image looks way to small (because the delay is very short) then you will need to increase the delay. Did you design your own or did you make this one?

[ahmadhesham89]

Thats Amazing!! but could you tell me please what is the delay time between each line in the code, because i made one but what can i see are rotating lines!

i'm using pic 16f877A, 20 MHz\

Thanx

[bronco72584]

el link de la pagina no funciona

[silverpizza100]

thanks for the info. Stupid Mexican!

[ivanjesik]

Is this also working with strong laser light and laser rays :-?

[lovelydiva06]

thats so awesome dude

[yonatansal14]

hola esta muy interesante como prodria hacer uno

[00retrobrad00]

@yonatansal14 hola, usted puede obtener más detalles de este proyecto en wwwdotbradsprojectsdotcom

[dinimueter555]

@yonatansal14 

[yonatansal14]

hola esta muy excelente es proyecto como lo podria implementar

[kscruiser]

How many revolutions per second is this turning?

[00retrobrad00]

@kscruiser I am not sure = ) I just made sure that it spins nice and fast and then adjust my delay in the code to suit

[LMF5000]

@00retrobrad00 I've seen similar things done with where they have a hall sensor and a stationary magnet (or you could use a reed switch or infrared diode/sensor and stationary plate to interrupt the beam) to detect when one revolution is finished. In other words instead of playing with the delay, the code starts drawing when the sensor is triggered, which happens once per revolution regardless of the rpm. It's even synchronised during spinup. Here's one: watch?v=-6JnAxTXApw&feature=re­lated

[bagatelox]

Is possible to send from pc text to this awesome creation?

[00retrobrad00]

@bagatelox It certainly would be possible. I guess the easiest way would be with those cheap wireless transmitters and then maybe use hyper terminal to send out the text data.

[punkdane]

brads, can i use a common anode in this project??

[00retrobrad00]

@punkdane Yes you can use common anode. You just need to connect the common anode to the +5v power supply and then you will need a logic 0 to turn on each colour (since it is now the cathodes that are seperate) But instead of completely changing the graphics code, you can just invert the data JUST before sending it to the LEDs. E.G. if you where to send 11011011 to common cathode LED's you would need to invert it to 00100100 to display the same data with common anode. Check my site for more info

[punkdane]

hi again brad, can i use 16f628 on this project?? coz i heard 16f628a is different from 16f628 alone..hehe

[00retrobrad00]

@punkdane I didn't even know that there was such a thing as a 16f628 (without the a on the end) I think that the only difference would be memory capacity and the code for this project uses hardly any memory.

If you wanted to wait just a little bit, I will be uploading details of my new POV which uses just one chip and does everything that this model does and even more = )

[punkdane]

@00retrobrad00 hey there bradix, i will be waiting ayt? hehe,, i wud just want to show off using your awesome project in our school festival, i will use it to boast my College department,,hehe

[00retrobrad00]

@punkdane I will certainly do a write up when I get some time. I am not sure exactly when though.

[punkdane]

hey brad, i cant find any rgb leds in our country, would it be ok if i'll just use individual colored leds?? please reply

[00retrobrad00]

@punkdane Can you get them from ebay? That is where I get them from.

You could use individual LED's arranged in a triangle but you would need someway of mixing the three colours together - maybe the cap of a water bottle might work?

[CJ2603]

hey man ... do u have website or smthing ? i realy want to make something like this ...

[00retrobrad00]

@CJ2603 Yes, just have a look at my comment just below the video clip = )

[CJ2603]

@00retrobrad00 thank you ..)) i have already found it)))

[acer0169]

looks like advertising in 10 years time ;)

[nahhuibljaat]

wow thats a cool toy you have there.. i woner if they have those in vegas?

[sunnypatel66]

Great Project, amazing what you can do with PIC's and Multiplexing.

[jhonny3698]

awesome! dude

[cephei10]

Hi brads, I have finished my first project, I would like you see it and tell me what do you think the name is "gilpov proyecto cero". thank´s for all brads and you have still whit this. Sorry for my bad inglish.

[00retrobrad00]

@cephei10 I had a look at your video and it looks great - good job = )

[falflores]

Hi I'm interesting to build one, first a normal led matrix, I know the most of theory, but i don't to undertand how it works the way that the pic extract the bits from the eeprom with I2C protocol, can u explain me please?, thanks, excelent job!

[00retrobrad00]

@falflores Hi, you can check out my website for information on how to build this and also other electronic projects.

[THMSHRTHLT]

Man, you should mail Time Warp to let them film it with their high speed cams...

[00retrobrad00]

@THMSHRTHLT Now that would be interesting to see how it looks frame by frame = )

[hapklaar]

@THMSHRTHLT That would be useless. You would just see it standing still.

[tythemaster1]

damn that was cooooooooooooooool

[allnickbusy]

really coool dudeeeeeeeeeeeeee...please tech me how i do that?...

[00retrobrad00]

hi buddy, just check out my website for full details on how to build one of these. (you can find the link from my channel)

[scarabeus79]

you rock!

[00retrobrad00]

hey thanks man = )

[muhasyim]

super dude

[2008UETian]

hi.i m an engineering student.

its amazing ..and i saw this kind of display first time in my life...

tell me your website...

[00retrobrad00]

Hi, you can get the web address from the comments at the top right of this screen.

[cephei10]

exelente.... un muy buen trabajo... la verdad inspira a hacer uno.... en estos momentos estoy diseñando el mio, pero debido a que no se usar pics, lo estoy haciendo con una eprom y contadores... me gustaria ver si tienes mas trabajos como este...

[juliogbox]

Con EPROM y contadores !! eso va a ser muy complejo !!

[Lazarus64retro]

Great project!

Brad

[mandrewtrow]

when it slowed down i was amazed

[bigobrother123]

looks totally like some space age shit! AWSOME

[drdrdr13]

lol  I WANT ONE =D

[webdoggboy]

lol and it vibrates to, so if your arm hurts u can use it too

[garylewis91]

wow thats amazing.

[skyykloudz]

that's just awesome, keep up the great work!

[mvmacd]

wow, that's really cool :D

[aghashire]

I just wanted to say ..Very nice!

[Raticidagoback]

Aqui em São Paulo todos adoraram, posta o esquema.

[thiagossrs]

What is the switching frequency?

[00retrobrad00]

To be honest I haven't worked it out! I just have it draw one column and then it calls a delay to hold that column on for a set period of time (which would be milliseconds.

I just used trial and error with my delay loop until I had a nice picture. You can work it out just by looking at the delay loop routine in the sourcecode (downloadable from my site)

[ComedyManMark]

where can i buy one and if you are selling can the buyer program the letters?

[ruares18]

whats your web site?

[00retrobrad00]

(sorry for the late reply)

I can't write it here but just checkout my channel and it has a link on the left hand side.

[funguy2233]

This is a really cool display you made. Where did you buy the leds from?

[00retrobrad00]

Thankyou!

I bought the LED's on ebay in a lot of 100. I think they cost about $30 all up including postage.

just search ebay for rgb led or rgb led 100pcs (something like that)

oh and make sure you get the 'frosted or semi-transparent LED's' don't get the clear ones because they can't 'hold' onto the colours properly and the display looks quite bad.

[jaciroscar]

I have the same doubt of RDCST, how do you get energy to the rotating pcb?

[00retrobrad00]

(sorry for the late reply)

If you check out my website you can see how to get power to the spinning circuit board. Look in the 8x85 section and also the 32x64 section of the site.

[RDCST]

Hey, nice colors!!

I think the most difficult part is to get the energy in to the rotating PCB.

¿How do you resolve this? ¿What is your web site address?

Thanks!

[00retrobrad00]

I have a new website that i have been working on but it is not up and running just yet. It will be by the end of the week.

To checkout the new web site, just visit my channel for the address.

I will be posting information on how to power the spinning board.

[harrisonhotmail]

Hi, I am wondering where do you find the motor and how do you mount the PCB on the motor.

[00retrobrad00]

Hi, i just bought a cheap $5 DC motor from an electronics shop. to mount the PCB to the motor i used a wire termination connector. (where you put in some wires then screw the grub screws to hold the wires together.

I took the round metal piece from the plastic housing, then soldered this to some blank PCB, then hot glued the blank PCB to my main PCB and then sloted it over the motor shaft and screwed in the grub screws.

have a look at my website and the 32x64 RGB POV page it has a photo of it

[TheRealDevil]

1 word.... AWESOME!!!!!

[2002636777]

I'm going to say this on everyoutube video I watch.

[arschgesichtt]

hai. did you build this thing alone?

can you send me the schematic from these propeller? :)

greeZ

[00retrobrad00]

Hi, did I build this by myself?

Well not really, I walk and talk with God everyday so I guess he was with me as I built it = )

but yes, this was my own project - I saw similar POV projects on the internet and that's where i got the inspiration to build this one.

you can feel free to check out my website and download the schematic diagram for this project (which has been updated) you can also download the source code and read up on how this POV works.

[fahadblack]

do v have to know exact speed of motor while programming/ do it had some thing to with inserting delay b/w each data transfer to leds. i cant see the circuit circuit in this vdo. where it is ???

[00retrobrad00]

The exact speed of the motor is not important.

This particular video doesn't use a position sensor and as such the image 'drifts' I have another video clip with a sensor that keeps the image stable.

The sensor just ensures that every frame starts drawing at exactly the same location each time.

[fahadblack]

great amaizing man. i havnt workd on rgb leds yet.

[00retrobrad00]

thanks for the comment, you should give rgb leds a go, they are really simple to work with and can achieve some good looking results.

I am working on a new project at the moment that uses 80 RGB leds and spins to give you 512 columns of 80 LEDS, you can produce some big pictures with it!

make sure you check out my electronics website to get details on some of my projects.

thanks again and God bless

[themainproblem]

That is a really nice project and well done. What is your website?

[crusiatusblack]

check the comments mate

[ghpk]

Made my day, your LED projects are Just Excellent, I love watching them.

Wonder if i could ever make one for myself.

Saw your other videos, they are just 5star alwas.

[00retrobrad00]

Thanks very much for the kind words, Ive got loads more circuit designs in my head, that eventually will be put into practice. Ill upload videos when i make them = )

Make sure you check out my website for details on how to make these projects yourself.

[racerxdl]

Hey how did you get it running with only one side at the board? That need a equilibrium between de sides, can you tell the "secret"?

[00retrobrad00]

Hi, do you mean weight distribution or actually getting the display to work with only LEDs on one side?

If you mean the weight - I have conter-balanced it on the other end.

If you mean the LEDs, you just need to have the motor spinning fast enough and the LEDs flashing through their data fast enough so that it will allow you to draw pictures.

[racerxdl]

Yeah, about the pictures I known the concept of POV Display, but I cant see how you balanced the weight at other side. Some metal thing or so?

[00retrobrad00]

Sorry about the late reply, i just used blobs of hot glue to counter balance, i am working on a better one a the moment which shouldnt need much counter balancing.

[djfrogfm]

all ur vids are awesome,,lol,, =] (and so is this one =])

[00retrobrad00]

Thanks very much, I appreciate the comment!

[amymint5]

wow... that is so unique and different.....

[todopic]

Hi, Retrobrad

To speed the motor turns?

[00retrobrad00]

Hi todopic, sorry but i wouldnt have a clue how fast the motor is spinning - i just run it up and it seems to work...

[Gilleece666]

Your awesome man, I have looking at your videos, great work. Keep it up!

Stay Retro :P

[00retrobrad00]

Thanks very much for the comment, i have just finished a new version with 32 rgb leds (instead of just 8) i will upload a video of it when i get the time.

[00retrobrad00]

Okay, all the information (schematic and source code) is now on my electronics website. Feel free to drop by and have a good look at how it works and then build your own!

[pz87]

Hi!

It's awesome, congratulations!

I have already searched for a long time like this display, but I havn't found nowhere on earth schematics and source code.

Please share it!

[00retrobrad00]

I will have the source code and schematic uploaded tonight in about an hour or two. Just check out my electronics website

[pz87]

Oh, It's great!

Thank you very much!

[G4jima]

Where can I find this I am ambitious to build a large scale version.

for video events.

Jim

[palcino22]

Where is schematic???? can I get it???

[00retrobrad00]

Hi, yes you can get the schematic - i will have it uploaded to my electronics website in the next few days.

I will also be uploading the source code

[GreenHills77]

How long did this take you?

[00retrobrad00]

The circuit design is really quite simple and that only took a couple of hours to come up with. The part that took the longest amount of time was designing the circuit board and making the circuit board (because it's double sided). So that took about a day to do.

There is not much code at all for the pic, so that didnt take long - but programming the graphics took a while.

But now i have a program that lets you draw pictures then it converts it to the required hex file - which makes it easier!

[GreenHills77]

Ok thanks!

[todopic]

hi

excellent work!

that you use for drive the led?

if it is possible to know

[00retrobrad00]

Hi, im not sure what you mean exactly - but the led are just directly driven by the 74373's.

If I wanted to make them super bright then I could use some sort of transistor array etc..

I am working on my electronics website and I will have full details of this project including schematics and assembly code.

[todopic]

Thank retrobrad

will be waiting for you web site

[Dongdong889]

太棒了！真的不错！特别是出现了六种颜色！酷！！！

I'm Chinese,it's cool,thanks!

but how can you make RGB LED appear different colours?(6 colours) PWM?

[00retrobrad00]

There is no form of PWM with this circuit. It just uses a combination of the RGB leds. 0 = LED off 1 = LED on RGB 000 = Black 001 = Blue 010 = Green 011 = Cyan 100 = Red 101 = Magenta 110 = Orange 111 = White So you get 8 combinations in all (black means all LEDs are off)

[Dongdong889]

i see

thank you very much!

[SamuelAaronWard]

This is VERY cool! I am interested in purchasing a kit. Even if you don't have a complete kit ready, I am interested in purchasing the schematics, wiring diagrams, parts list, instructions, etc. How much? :)

[00retrobrad00]

Thankyou very much!

I dont plan on charging for schematics etc.. but i will let you know when i get proper schematics drwan up.

[NaagLugYaajUaSi]

Hi, great work. I'm planning on something like so. But a few question in regard, you use what compiler? you have schematic? ? What is the RPM speed you used? In regard about power,

have you tried double sided copper trace with brush contacts and large capacitors the spinning board? Hopefully the capacitor will have enough charge left at the moment when the contact lost connection, if whenever.

[00retrobrad00]

Thankyou for your comment.

I use Microchip IDE to code and compile the program (assembly language)

I dont have a schematic sorry - when i get the time i will do up a proper schematic though.

Im not sure about the RPM - but the good part is that you just 'guess' a delay to hold on each row of leds (in software) and then vary the motor speed until it matches. (i.e until you get the picture you want)

The brush / contacts system is a great idea - im trying it now = )

[00retrobrad00]

I have now uploaded another video of this display - have a look at my other videos.

[H3liosphan]

Hi

excellent work there! It looks really impressive. I would buy your kit.

I had a go at doing something similar with a ye olde PIC 16F84a and some surface mount LEDs, but I wasn't happy about the weight of it all when it spun. The batteries are the killer for it.

I would wager your design will be consuming quite a bit of energy just spinning all the weight around.

I ran into a dead end and gave up figuring out how to provide power thru the motor shaft as some people have achieved.

Thanks

[00retrobrad00]

Thankyou.

I have just finished making a program where you can draw the picture / pictures / text on the computer and it then converts it into a hex file which you then write to the eeprom. This makes it easy to do animations etc

I will upload a video of animations on this device tomorrow.

And yes - battery life is a problem - im looking at using slip rings or perhaps some kind of induction so that i dont need batteries, but ill have to see how i go i think.

[H3liosphan]

Hi again.

I made another posting but it disappeared, so here goes again.

I was wondering how/if you detect a full revolution of the device so it knows when to redraw the 'image'?

I'm thinking hall effect sensor / reed switch / bicycle computer sensor / other method?

Thanks

[00retrobrad00]

In this video it does not have a sensor but I have since added one and now it works alot better. I used the opto-sensor from an old mouse. So everytime the sensor passes the nail - thats where it starts to draw the frame. without the sensor it is basically impossible to get the image to stay still.

[H3liosphan]

Yeah I found out its difficult to get a stable image without a sensor during my experiments too.

Thats a good idea using an optical sensor from a mouse. I had reasonable success using nowt more than a reed switch and a strategically positioned magnet but it wasnt perfect.

Thanks

[00retrobrad00]

The opto sensor works very well - you just need to add a simple small signal transistor (like a pn2222a) in order to give your output either 0v or +5v.

I can send you a simple schematic if you are interested.

[H3liosphan]

Thanks for the offer.

But I've halted my POV display developments to work on my disco coffee table.

The main obstacle for me was supplying power thru the motor shaft - without it I'm personally not happy with the results.

Thats my next area of 'research' if you can call it that.

[ANCHODEBASTOS]

Hi! I´m very interested in your device. Where can I get info to build one?

[00retrobrad00]

Hi, i am working on making this in a kit form (but with more leds - possibly 32 leds high)

I have just finished another kit which is a mini game system - it teaches assembly programming with the pic microcontroller.

Check my other videos if you are interested.

[limeblast]

Are you using a bruched or steppper motor?

[00retrobrad00]

Hi, its just a standard DC motor - i have improved this project with a better motor and have mounted it properly so i dont have to hold it.

Ideally, you would want to use a stepper motor.

[mindthomas]

Couldn't it be made without using the EEProm?

And what language did you programmed it in?

[00retrobrad00]

Yes it could be made without the eprom but i added the eprom to allow me have extra memory for future animations.

a 27c512 eprom will give me enough memory for 255 'frames' but if you only wanted one frame then you could get rid of the eprom all together.

I programmed it in assembly.

When i get the time, i will release all the info on my website...

[AyuBetter]

WHOA!!

[purpulhaze]

I wanna try something like this but with avrs instead of pics. Is this possible?

[00retrobrad00]

Yes, it would definately be possible to do this with AVR's infact i'm leaning towards switching from pics to AVR's because they don't have little bugs that I have found the pics to have.

[perplexedmoth]

well, spinning leds is alrite, but what's the logic behind that of spinning mirrors?

and it's real amazing, I wanna get into PICs soon. is Assembly the only way to program PICs?

[00retrobrad00]

You can program pics in a number of languages - ASM, C and basic are the ones i know of but there could be other languages? I would like to learn to program in C (as soon as i find the time...)

[beeshyak]

You can program PIC in assembly. But many find it much easier with higher level language. In PIC, there may be way too many registers that you want to bother yourself with if you go ASM. I am using BASIC. Let the compiler do the hard stuff.

[fermixx]

have you entirely made it?

because its a very cute project.

oh and by the way, im waiting for those animations! the fact is that you need a figure of 8 pixels, so u cant make a big thing there. anyways very nice

[mrkirkon]

nice job

[00retrobrad00]

Thanks mate!

It was your POV Globe that inspired me to make something like this! So thanks very much = )