8x8 display

[chriz]

hi!
we need your help.
we're going to have an 8x8 display project that will produce different animations and we'll going to use the 16F84 microcontroller.
we based our project in a 5x7 display and it uses only 1 microcontroller.
in an 8x8 display, do we need to have two microcontrollers?
how will that be possible?
aside from that ,in a 5x7 display, there are only three switch buttons that serves as an input to the microcontroller but in our project we'll make it to 5 switch buttons as an input?


pls. help...
thanks... :?

 

[Nigel Goodwin]

hi!
we need your help.
we're going to have an 8x8 display project that will produce different animations and we'll going to use the 16F84 microcontroller.
we based our project in a 5x7 display and it uses only 1 microcontroller.
in an 8x8 display, do we need to have two microcontrollers?
how will that be possible?
aside from that ,in a 5x7 display, there are only three switch buttons that serves as an input to the microcontroller but in our project we'll make it to 5 switch buttons as an input?

The 16F84 is essentially obselete, and has been for many years - it was replaced by the higher spec (and cheaper) 16F628 - so you shouldn't be looking at the 16F84 for any new projects.

But in this case, even the extra I/O of the 16F628 (16 pins as opposed to 13 on the 84) isn't enough, so I would suggest you move to the 16F876 (28 pins) or 16F877 (40 pins) - both of which are compatible with the 84 and 628, but give enough I/O for your requirements.

I would suggest you try looking at my tutorials, which might give you some ideas? - in particular the dual seven segment display one, which could easily be extended to meet your requirements.