MAX7219 DOT MATRIX 8 x 8 Pixels

Sergejs · Post by **Sergejs** » Fri Dec 10, 2021 9:32 am

I lost it again. In library of components it is shown but I can not add it on 2D dashboard. What happen with it?

It is non visible.

Post by **mnfisher** » Fri Dec 10, 2021 10:35 am

It probably doesn't show as anything - and it certainly won't work in simulation...

It was a long time ago and I didn't know how to do it then... One day I might try (or maybe a volunteer out there would like to add the 'missing' bits????)

Martin

Sergejs · Post by **Sergejs** » Fri Dec 10, 2021 11:36 am

Now I have not licence to compile something with MAX7219. But what there is a licence???

Sergejs · Post by **Sergejs** » Fri Dec 10, 2021 12:39 pm

This Post is inappropriate.
No swearing or accusations, please.

Sergejs · Post by **Sergejs** » Fri Dec 10, 2021 4:24 pm

So it Ok if no refund available. I can understand you. This is your business. But can you sell me MAX7219 component? It was working in begin of I starting use Flowcode. I do not need any other displays except Generic 16x2 by Hitachi HD44780 and MAX7219 please?
Where is the problem you have? I do not need one hundred of displays what I never use. Just two both.

Can you?

Sergejs · Post by **Sergejs** » Fri Dec 10, 2021 4:36 pm

I am not programmer but I am radioamateur and I like all this electronics what is available with MCU PIC controllers or Arduino. I make some interesting things for me. I am sorry for my emoutions in some previous posts. But I realy do not understand why there is no possible to buy any one of one component. Why should I buy big pack of components witch I will never be use.

Post by **mnfisher** » Fri Dec 10, 2021 7:43 pm

Not sure why you are getting an error - the Max7219 component doesn't need a licence and is free to use (as far as I know - it does use the CAL Spi and a couple of lookup tables (array initialisation wasn't so easy in v7) but I don't think this should cause an issue)

Have you tried to use a different MCU or has something else changed?

Martin

Sergejs · Post by **Sergejs** » Sat Dec 11, 2021 2:28 am

Yes, I try with other MCU but there is an error. But this MCU do not have port D. I can not understand it. You can see below attachement.

Sergejs · Post by **Sergejs** » Sat Dec 11, 2021 2:58 am

With Arduino Nano 328P it is so:

Post by **mnfisher** » Sat Dec 11, 2021 7:17 am

I think the problem is that the Nano is not one of the free targets. Arduino Uno is..

When I wrote the component I couldn't work out how to have an unconnected pin - and I think one 'pin' was hidden and that meant that the code is tied to AVR...

Things have moved on - and it should be easy enough to either 'tweak' the component to remove the pin or even just to move it to the top level to allow the user to reassign it..

I'm at work this morning - will have a look this afternoon.

Martin

MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels

Re: MAX7219 DOT MATRIX 8 x 8 Pixels