I cannot get the fuse settings correctly set in my ATMega32 when following your instructions on the 8x8x8 led cube?

I've triple checked my wiring and that isnt the problem. i've followed your instructions to the letter, using the exact same components including the oscillator crystal 14.7456mhz i'm using the exact same USBTinyISP from lady ada, on a win7 x64 system with the correct drivers. everytime i send the avrdude hfuse setting it comes back with "initialization failed, rc=-1"  and then the chip is unresponsive to any avrdude commands. i've bricked 2 ATMega chips following your instructions now and as i dont fully understand AVR programming i really dont know what to do next. how do i reset the chip so i can try setting the fuses again?

Question by shadowsdomain   |  last reply


what leds do i need to make a LED cube 8X8X8? Answered

i have looked at the instructions and it does give a rough indication of the type of LEDs that are needed but i am still confused. this is the link that i am using to build the LED cube 8X8X8     https://www.instructables.com/id/Led-Cube-8x8x8/ Thanks for the help in advance

Question by nimit1994   |  last reply


led cude 8x8x8 parts?

where can i get 74HC574 IC i have spent hours and hours looking for it and i can find it anywhere. i have tried ebay and amazon i have also googled it and i cannot find anything. i have also email the person who made the led cube 8x8x8 and have had no reply. thanks in advance.

Question by nimit1994   |  last reply


Problem with 8x8x8 led cube ?

I made a 8x8x8 led cube , i had finished all soldering  all leds works properly   but now i have a problem some of the glows(lightly) when ground is given to the +ve leg of the leds  or when 2 when +ve and -ve is given to -ve  of different layers Is this problem negligible ?? will the cube works ?? 

Question by Mayoogh_Girish   |  last reply


How does the 8x8x8 cube (english) connect to your pc?

How does this https://www.instructables.com/id/How-to-build-a-8x8x8-led-cube-English-version connect to your pc?

Question by Wolfhunter9154   |  last reply


8x8x8 Led cube, Parts help?

Ok, Ive been debating this for a long time, and I already bought some of the parts, But Im trying to figure out what else I need. So far, I have" Computer power supply Prototype board from radioshack with copper eyes. Two way screw terminal 3 - 20 pin IC terminals (I know I need more, but 3 is all radioshack had at the time) 2 - 16 Pin IC terminals 1000 uf Capacitor - 6.3v 100 uf capacitor - 10v 33uf capacitor - 6.3v A push button 3 status led's (Red, Green, and yellow) Arduino uno protoboard ^ I also have 18 gauge aluminum wire for the layers.  I have a spool of rosin core solder (I hope this will work, I dont wanna buy more) And Im going to get 1000 blue leds off ebay. with these specs: Color: Blue Size (mm): 5mm Lens Colour: Water Clear Forward Voltage (V): 3.2-3.4V Wave Length(nm): 465-470 Luminous Intensity : 11000 - 12000 MCD Life Rating: 100,000 Hours Viewing Angle: 20-25 Degree Max Power Dissipation : 80mw Max Continuous Forward Current : 30mA Max Peak Forward Current : 75mA Reverse Voltage : 5~6V Lead Soldering Temperature : 240°C (<5Sec) Operating Temperature Range : -25°C ~ +85°C Preservative Temperature Range : -30°C ~ +100°C As far as the rest goes I have NO idea what I need. Im going to be using my arduino with it, And im not 100% sure how to change the current instructable here to work with it. they dont specify.  Any help would be really appreciated. Ive wanted to make one for a LONG time :D

Question by 'earl   |  last reply


for the 8x8x8 led cube what would i change in the ready made code to make the cube work with a usb to parallel cable?

I have the code for the 8x8x8 led cube from this instructable https://www.instructables.com/id/How-to-build-a-8x8x8-led-cube-English-version/ and am trying to make it work with a usb to parallel cable. I'm using vb 6.0

Question by deanevans   |  last reply


8x8x8 LED Cube bought this DIY kit - is everything there? Answered

Hey guys, I recently bought this DIY Kit on ebay, however after receiving it im in doubt if the items i received are enough for me to complete a 8x8x8 LED Cube. http://www.ebay.com/itm/8x8x8-LED-cube-DYI-kit-Choose-your-collor-/121171861175?pt=Model_Kit_US&hash;=item1c3667deb7 That's the item. And you can see all the parts in the photo. I have also attached better photos I have not decided which specific guide to follow yet, however i've been mostly looking at the one by "chr". Can anyone help me out, what am i missing? Sorry for being a noob! :p

Question by nvolante   |  last reply


8x8x8 RGB led cube build, requesting assistance so I can make it properly. Can anybody give advice?

I just purchased 600 common anode RGB led's and I want to make a 8x8x8 led cube based off this video and channel. http://www.youtube.com/watch?v=zS5oZPJVh_o I was wondering if everyone/anyone could help explain how it works to me (for understanding and troubleshooting), Help me simplify the wiring design. (Maybe custom pcb's? I've never made them before however). I was going to use the 777 from here http://www.futurlec.com/Protoboards.shtml And help me get something for a code that I can understand? I want to integrate my Arduino uno. Yet I'm not sure how or how to write code for it. I've tried a few times to learn but it seems to be a very hard task. Lastly, I want to integrate sound visualization into my cube, maybe as a separate device I can plug into it? run off my pc? I want to make it do very complex light shows etc. I feel like this is a lot to ask but I also feel that this would be a fun idea to play with. I appreciate any feedback Thanks!

Question by 'earl   |  last reply


How to choose/calculate the right resistors for the 8x8x8 Led cube?

Https://www.instructables.com/id/Led-Cube-8x8x8/step14/Choose-your-resistors/ Some people like me seem not to understand how they can determine which resitor is to use for the led cube posted above! Could someone PLEASE explain how to choose the right ones, maybe with some example? please answer in the comments section too, so others who want to build that cube see it too! thanks in advance! best regards

Question by freaked1   |  last reply


Does anyone have suggestions for the 5v power supply for the 8x8x8 LED cube by Chr? Answered

The step about the 5v psu for the LED cube is confusing, at least to me. Here is the page about https://www.instructables.com/id/Led-Cube-8x8x8/step33/Build-the-controller-Power-terminal-and-filtering/ . At first I was going to use the lm7805 but then it said that they took it out. All the pictures show the original design and I don't understand how they replaced it. Someone in the comments talked about using the lm2575 but I am confused.

Question by Arya42   |  last reply


What size of resistors should I use? Answered

I'm going to build an 8x8x8 LED cube and I am confused about what resistors I should get. Here is a link to the blue LEDs that I bought: http://www.ebay.com/itm/110942426746?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649. This step https://www.instructables.com/id/Led-Cube-8x8x8/step14/Choose-your-resistors/ says to use the burst load of the LEDs but the chart on the item page is somewhat confusing to me. I know that with the resistance equation it would be R=3.2v/0.02A but I don't know if that is the right mA. I am pretty new to electronics so any help is appreciated.

Question by Arya42   |  last reply


LED cube 3x3x3

I hope this goes to a place w/ someone who can assist me. I built my cube wrote my code.  My C skills are very limited and something like this would strengthen it I imagine.  I would like some help in creating the letters though, kinda like they did in the blue 8x8x8 demo with the INSTRUCTABLE.  So far I cannot make all the LED's light up in a single column, and make another column light up only one or two simultaneously.  I'm lighting the whole thing.  I understand the multiplexing and the lights in each column are toggling faster than I can see, but I still would like an idea.  I'm going to do an 8x8x8 for capstone and would like to get familiar with this one first.  Using the arduino uno and software.  Any tips would be appreciated. Thanks

Topic by jacco82   |  last reply


Is there a difference between MAX232 IC and MAX232CPE? Answered

I'm finding the parts to build the 8x8x8 LED cube by Chr but I need to get the MAX232 integrated circuit. I looked for it on eBay and found some called MAX232CPE. The author only listed MAX232 and I want to know if there is a difference between these two ICs. I also found some on eBay that ended in ESE and N. I'm new to building electronics and any help is appreciated. :)

Question by Arya42   |  last reply


How many super bright white LEDs can be connected in series and in parallel to an Arduino pin?

I'd like to make an 8x8x8 LED cube with super bright white LEDs with the Arduino. I've thought of two ways to do this. I just want to know what my limitations are and if I should use red LEDs instead and what are the limitations on them? I'm using an Arduino Uno R3.

Question by steve.tofflemire   |  last reply


74HC574 VS 74HC595

Can anyone help me understand when you would use one over the other? I am reading the spec sheets and I am not understanding the difference. I am gathering parts for two different projects. One is making an 8X8X8 LED Cube and the other is making a plaque using 8X8 matrix cubes. The plaque will have 11each of 8x8 matrix cubes red and 4each of 8x8 matrix cubes that are RGB. Thank you in advance for your help.

Question by reckerd   |  last reply


What do I need to start getting into electronics?

I saw an instructable on here for an 8x8x8 LED cube, and was completely inspired. When I was younger (I'm 19) I built a few things out of those snap-together electronics kits, but nothing involving a soldering iron or a breadboard. I've bought myself a breadboard and a few little pieces to try to start out, but I know I need more--and I'm not totally sure what. On my list is a soldering iron (I have one but it's a piece of junk), red/black wire, a multimeter, and an assortment of resistors, and an arduino, but past that I still feel like I'm missing something vital. My current project list is: A 4x4x4 LED cube (just so I can know the fundamentals before jumping into an 8x8x8) A stereo (I have 2 car speakers that are just laying around, I'm hoping to turn them into something useful) Touching up my benchtop power supply (I built one out of a computer PSU but it looks.... not good) A high-power LED flashlight (my mom is into photography and saw a post about using an LED for an improv light source--the pictures turned out great, so I want to build one that has enough brightness to be used in a real photoshoot) An LED visualizer (This is one of the more daunting ideas I've had, I realize programming will be a bit difficult... I was hoping to use RGB LEDs and a microcontroller to handle the logic) I have a bit of experience in coding, nothing too impressive, but enough where I feel that I can grasp at least the programming of an Arduino (which so far looks user friendly and relatively simple [to me]), and on top of that I've been into computers and done a bit of tinkering with electronics before and so I know the basics of resistors (and LEDs together), capacitors, relays etc. Any advice would be greatly appreciated :)

Question by ninjatails   |  last reply


What resistors do I need for my complex LED cube?

So I'm working on building a LED cube. But just to be completely different I'm going with a complex design. Overall its a 5x4 with 4 layers, but its not a perfect cube and has only 2 or 3 LEDs per column. I know that I'll need different resistors for the 2 LED and 3 LED columns but how do I calculate what I need from the IC chip to the LED and with the Transistor? I'm using white LEDs (3.2v @ 20mA) driven by 74HC574 ICs with a 5 volt power supply.  The transistors are 2N2222.  I will do the math if someone can give me the formula or calculator! (I'm using this a guide http://daid.mine.nu/instructabliss/?url=https://www.instructables.com/id/Led-Cube-8x8x8/)

Question by cgardner1   |  last reply


Need advice on how to make a 3D printer and how to control motors

Hello, I would like to make a 3D printer this summer but I have no idea where to begin. I know the basic parts that are required like motors, a motor controller, an extruder, etc... I would like to make a very large printer --- something that prints either a 8x8x8 or a 10x10x10 inch items. I have a very very very tight budget (somewhere around $50) but the good news is that I already own some items that might be able to help. I have an arduino, some batteries, a raspberry pi, some servos, some pvc pipes (with joints), and some pieces of wood. My 64 dollar question is that will windshield wiper motors work? I know that most people use stepper motors but is it possible to obtain the same amount of control on a wiper motor? If you have ever built a 3D printer or know where to find parts for cheap or just have some tips on how to best build it, please let me know. Any help is appreciated. p.s. If it is possible, I would like to have more than 3 axis of movement.  Thank You 

Question by rptech   |  last reply


I need someone to help me with me 3x3x3 and 4x4x4 led cube schematics?

Im making them to run off my arduino UNO, And Im sure most of you are tired of seeing these. But Im going to do a 3x3x3 and 4x4x4 before tackling the massive task of the 8x8x8. I want to make sure Im doing it right, And I drew up some very basic schematics as for what I need to do. Im hoping these are at least somewhere in the ballpark. 3x3x3 http://img846.imageshack.us/img846/8991/s340604p01wl.jpg 4x4x4 http://img64.imageshack.us/img64/8792/4x4x4blueprint.jpg So yeah, thats what I have so far, as for led's heres the specs: Life Rating : 100,000 Hours Emitted Colour : Blue Size (mm) : 5mm Lens Colour : Water clear Peak Wave Length (nm) : 460 ~ 470 Forward Voltage (V) :  3.0 ~ 3.4 Reverse Current (uA) : <= 30 Luminous Intensity Typ Iv (mcd) : 6000(Typical) ~ 8000(Max) Viewing Angle : 20~25 Degree Max Power Dissipation(PM): 80mW Max Peak Forward Current(IFP): 75mA Lead Soldering Temperature : 240 Degree (<5Sec) Operating Temperature Range : -25 ~ +85 Degree Preservative Temperature Range : -30 ~ +100 Degree Not sure what resistors I need though.

Question by 'earl   |  last reply