tag:blogger.com,1999:blog-5485549003242897389.post8731369142772648355..comments2024-02-20T02:58:19.459+01:00Comments on Tom's Projects: How to Build a Simple LED Cube 4x4x4 - Part 2Tom F.http://www.blogger.com/profile/17222198163820671255noreply@blogger.comBlogger22125tag:blogger.com,1999:blog-5485549003242897389.post-64828125863451612262014-02-20T22:16:49.271+01:002014-02-20T22:16:49.271+01:00That depends on how you solder the cube. I used a ...That depends on how you solder the cube. I used a 10x5 centimetres PCB and divided it into a 5x5.5 piece for the cube and a 4.5x5 piece for the electronics. Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-79862404298913009812014-02-18T06:19:00.670+01:002014-02-18T06:19:00.670+01:00Hi Tom
Just wondering if A 50mm x 70mm vero boar...Hi Tom <br /><br />Just wondering if A 50mm x 70mm vero board will be the right sizeAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-35299171611396660492014-01-09T00:52:28.120+01:002014-01-09T00:52:28.120+01:00I have tried to intently study this. If I have it ...I have tried to intently study this. If I have it sussed, and I think I understand now, in step 3 the vertical wires are connected to the yellow wires. Under final assembly 'so far the vertical wires just end on the board...' These yellow wires connect to the vertical wires soldered to the cube?Anonymoushttps://www.blogger.com/profile/09977078550877284651noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-17458304370408189272014-01-08T22:16:54.352+01:002014-01-08T22:16:54.352+01:00I'm reffering to pic 12 on this page where the...I'm reffering to pic 12 on this page where the vertical wires are marked with yellow rings. I understand that each wire is attached to Isits layer. The other end goes through the hole in the perf board.. but in pic 18 where you show the underside with the white wires connecting, I cant see where these vertical wires connect to :)Anonymoushttps://www.blogger.com/profile/09977078550877284651noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-11221724977319153522014-01-06T23:59:29.490+01:002014-01-06T23:59:29.490+01:00Tony, have a look at part three. You are probably ...Tony, have a look at part three. You are probably referring to the yellow wires of the schematic/photo there?Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-28946945621926389982014-01-04T18:34:09.794+01:002014-01-04T18:34:09.794+01:00I've hit a snag. The wires attached to the com...I've hit a snag. The wires attached to the common Cathodes.. Solder one wire to each layer and .. where does the other end connect to? I have looked at the picture of the underside with the 8 white wires but I cant see where the wires attached to the cathodes are soldered.Anonymoushttps://www.blogger.com/profile/09977078550877284651noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-89334487152688596822013-11-13T23:24:37.806+01:002013-11-13T23:24:37.806+01:00Sorry, but I don't understand. You want me to ...Sorry, but I don't understand. You want me to make a video about a battery?Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-88701448756832062882013-11-10T06:21:20.358+01:002013-11-10T06:21:20.358+01:00I want to make LED cube for colleage project at ho...I want to make LED cube for colleage project at home ..pls send me videos with power supply and controller on breadboardAnonymoushttps://www.blogger.com/profile/01269391487407889647noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-48307110740927736502013-08-16T23:24:26.821+02:002013-08-16T23:24:26.821+02:00Narra, are you saying that you are still building ...Narra, are you saying that you are still building a cube with 64 LEDs, but with different coloured LEDs? It depends how you distribute the LEDs and what colours you are using.<br /><br />The problem is of course that different LEDs have different forward voltages. So it might be necessary to add series resistors for e.g. red LEDs in order to get equal brightness. It doesn't matter if you add Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-39968569460354002542013-08-16T16:52:13.235+02:002013-08-16T16:52:13.235+02:00Hey tom!You have connected the corresponding colum...Hey tom!You have connected the corresponding columns of the two half cubes,on what basis did u connect them?Mine isn't a mono colour cube.So u suggest i connect the cathodes of the same colour??Anonymoushttps://www.blogger.com/profile/07439020657023982087noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-72913093657053711352013-07-29T15:01:50.831+02:002013-07-29T15:01:50.831+02:00This comment has been removed by a blog administrator.Rushikesh Kanthamanihttps://www.blogger.com/profile/14706365864795050699noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-38192312936828635492013-02-18T00:59:01.543+01:002013-02-18T00:59:01.543+01:00Thanks for the info and links Tom. I spent a few h...Thanks for the info and links Tom. I spent a few hours (!) cruising to various sites that mentioned TriPad and it looks like it's available, but at a premium. I live in southern Ontario, Canada and all the vendors I found were in Europe; shipping overseas doesn't really make it worth it. I can't believe the TriPad stuff isn't more popular! Oh well. <br /><br />I'm thinking I Ron_Onoreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-91398618067282630092013-02-14T18:23:30.938+01:002013-02-14T18:23:30.938+01:00Hey Ron, thanks for the feedback. Go for it! There...Hey Ron, thanks for the feedback. Go for it! There isn't much to lose.<br /><br />Yes, this PCB material is my favourite. I used to use the normal strip board, but interrupting those strips always is a pain. Connecting those pads is much easier and can be done simply with a solder iron, lots of solder and some practising.<br /><br />I get them from a mail order company in Germany, but I don&#Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-70371989485591147162013-02-13T04:56:55.595+01:002013-02-13T04:56:55.595+01:00Very cool project. And very nice blog doc. I'm...Very cool project. And very nice blog doc. I'm seriously thinking of building one of these and your instructions here will be helpful.<br /><br />I'm wondering where you got the protoboard you show in the photos. I think I had some of this 3-holes-per-row stuff years ago but can't seem to find it anywhere now. Any idea of it's brand name, product#, ect.? Thx.Ron_Onoreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-80814955598347039462013-02-09T18:49:49.613+01:002013-02-09T18:49:49.613+01:00Hi Bob, that is possible. Actually, the cube is re...Hi Bob, that is possible. Actually, the cube is really a 8x8 LED matrix, shaped into a 3D form.<br /><br />You would have to modify te software somewhat, though.Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-87567404607320793842013-02-08T07:42:39.666+01:002013-02-08T07:42:39.666+01:00I want to make a 5x10 led matrix using this single...I want to make a 5x10 led matrix using this single chip method. Is that possible? I could really use some advice as it is my first project. Feel free to email me:<br /><br />Munderbob@gmail.com<br />Or a comment is fine.Bobhttps://www.blogger.com/profile/15189984037694791907noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-57859331065248555312013-01-13T01:58:27.782+01:002013-01-13T01:58:27.782+01:00Hi,
there are 8 common cathodes. Please have anot...Hi,<br /><br />there are 8 common cathodes. Please have another look at part1, "How it works".<br /><br />I am using the 64 LEDs in an 8x8 matrix.Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-29162150175232822052013-01-13T01:33:15.939+01:002013-01-13T01:33:15.939+01:00Hi, how many common cathodes are there, could you ...Hi, how many common cathodes are there, could you please make that part more clear. <br />Thank youAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-15708077463504386132013-01-03T16:02:03.716+01:002013-01-03T16:02:03.716+01:00Hi Ben,
1.) Whether the plan still works or not d...Hi Ben,<br /><br />1.) Whether the plan still works or not depends on your LEDs. Larger LEDs do not necessarily draw larger currents.<br /><br />The LEDs I was using are rated at 20mA. The controller pins of an ATMega8 can supply about 40mA (but with a significant voltage drop!).<br /><br />In the end, it is a matter of what level of brightness you expect from your cube.<br /><br />There are _no_Tom F.https://www.blogger.com/profile/17222198163820671255noreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-80501537387830430582013-01-03T01:18:32.627+01:002013-01-03T01:18:32.627+01:00Hi
I wanted to make a 4x4x4 LED cube with 10mm LE...Hi<br /><br />I wanted to make a 4x4x4 LED cube with 10mm LEDs for a 10 week project and wanted to ask you a few things which I am unsure of:<br /><br />Firstly: <br />Will these plans still work or will they need to b<br />e changed alot due to the more current being drawn?<br />(apart from the obvious change in resistor values)<br /><br />Also I aren't sure whether to charlieplex the cube Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-58279039925887963132012-12-25T07:27:03.399+01:002012-12-25T07:27:03.399+01:00Very clever!Very clever!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5485549003242897389.post-14298030250371229252012-11-26T23:09:19.074+01:002012-11-26T23:09:19.074+01:00harika olmusharika olmusJoKeRhttp://www.yazyagmuru.orgnoreply@blogger.com