ieee488:
I linked that tutorial.You did not tell us what you were doing including which tutorial, if any, you were reading.
It wasn't until #15 that you mentioned it. I suggest that you stop with the indignation routine.
Yes, I had a look at quite a few tutorials before posting here and that was the one that convinced me that I could hook up the matrix directly to the board.
I also don't have any resistors lying around that I could use for current limiting purposes. I also don't have the time to order the parts I would need, because what I intend to do with it, needs to be done in a few days or not at all. If I had the time, I would have ordered a pre-assembled matrix with a MAX7219 and resistors on a chip.
Also you don't think there is a problem with that tutorial being there if it's such bad practice??
Grumpy_Mike:
That is simply not true, which you would know if you weren’t so arrogant.It is hard to help someone so resistant to learning.
Why do you think we say such things? We are not jerking you arround, we are given good solid advice.
You were, I was merely criticising PaulRB, who was not. As he himself stated, he only wanted to "provoke". That isn't arrogance on my part. I was really trying hard and testing all of your suggestions thouroughly.
PaulRB:
You are right, it has, until now, been completely unproductive. That was post #3. Here we are 15 posts later and only now, after several repeat prompts, are you finally asking what I meant. Like many forum members, I am fed up with writing long explanations only to have them ignored. So I posted a short and hopefully provoking post to see what reaction it got. Then I could judge the level of attention the OP was going to give the thread they started. All too often, newbies give up as soon as they realise electronics, as a hobby, takes concentration, determination and willingness to learn.So, still interested to find out why you are damaging the Nano and/or matrix?
I do not plan to pick up electronics as a hobby. I just wanted to get something done. Call me foolish for that or even lazy, but one cannot learn everything. I do have some basic knowledge in electronics, which led me to believe that trying to light up a single LED without a resistor wouldn't be much of a problem. Again call me whatever for thinking that.
I thank you guys for all the effort you have made in trying to answer my question and I am really sorry that the thread has derailed in such a way. I never wanted to come across as arrogant. I was very excited to solve this with the limited tools I had, but it just wasn't meant to be, I guess. Have a nice day.