Total newbie here. I have an 8x8 LED panel. It has 8 pins on each end. The Row Column project shows connections on one end and one side?? On mine they are on opposite ends. The only difference I can see is a little round tab sticking down on one end. Is that pos or neg? Also, breadboards only have 8 holes on each side. If there are 8 pins you cannot connect. How does one hook up this kind of panel? Is there a bigger type of breadboard? I appreciate any help I can get!
What Row Column project?
What you have is called a 8x8 LED matrix.
They are either row anode column cathode or row cathode column anode.
Without a part number one can only guess what you have.
Total newbie? Yes indeed!
The common "newbie" mistake is what we call the "crystal ball" problem. You assume that we can see what is in front of you and that descriptions such as "The Row Column project" have magical meanings.
If you are lucky, someone will - with the help of "Google-fu" - take a stab at what is in your head. My Google guess is that you are working on this Arduino tutorial page.
From that particular page, this is a schematic diagram:
It indicates the connections between the components, but not (necessarily) their physical layout. In fact, it gives you pin numbers for each termination and allows you to make the necessary connections knowing the standard numbering scheme where pins are counted anticlockwise viewed from above
or more correctly, clockwise from below as seen looking at the PCB tracks. The index peg is either adjacent to pin 1 or as shown here, between pin 1 and the highest numbered pin.
Your comment regarding breadboards is incomprehensible; as before you need to indicate what you mean by a breadboard, best by a Web link.
Do read the instructions for posting.
Oops! Sorry! I was talking about that tutorial, indeed. Thanks for the help.
I googled the "led matrix on a solderless breadboard " and found an instructable. I also figured out, I think, that the tutorial here means they are using jumpers and NOT mounting the led array on a solderless breadboard. After seeing that instructable, I see why. My brain still hurts from trying to figure out which pin would end up where.
I have exactly no electronics knowledge, obviously, and have been using a clone Uno starter set from AliExpress with a lot of parts and zero paperwork of any kind. My only guide has been "Getting Started with Arduino". Its a lot to take in. Thanks for bearing with me!
onrecess:
Its a lot to take in. Thanks for bearing with me!
Well, you could just postpone your interest for a couple of weeks and just buy one (no, three or four!) of these from eBay.
It's not quite so "experimental", but do you really need to do every last bit yourself? They also avoid the various mistakes in that tutorial.
Also, you need to be able to solder that together - but in fact you really cannot do any meaningful electronics experimentation without the ability to solder, so if you cannot at present, perhaps that is your next step whilst the modules are in the snail post from China. Note for soldering, to avoid the (literal) pain, you need an instructor - a friend to teach you. There is usually at least a local college, society or Amateur Radio group nearby where someone can help.
onrecess:
Oops! Sorry! I was talking about that tutorial, indeed. Thanks for the help.
I googled the "led matrix on a solderless breadboard " and found an instructable. I also figured out, I think, that the tutorial here means they are using jumpers and NOT mounting the led array on a solderless breadboard. After seeing that instructable, I see why. My brain still hurts from trying to figure out which pin would end up where.
I have exactly no electronics knowledge, obviously, and have been using a clone Uno starter set from AliExpress with a lot of parts and zero paperwork of any kind. My only guide has been "Getting Started with Arduino". Its a lot to take in. Thanks for bearing with me!
If you are not big on soldering and want something already assembled for you, take a look at
http://www.ebay.com/itm/MAX7219-dot-matrix-module-Arduino-microcontroller-module-4-in-one-display-/171578345542
I am thinking about one.
ieee488:
If you are not big on soldering and want something already assembled for you, take a look at thisI am thinking about one.
Highly recommended! Even better deal than what I cited!