Matheus3322
Newbie level 5
I need help making my 5x7 led matrix display driver!
Can anyone help me ?
thank you!
Can anyone help me ?
thank you!
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How do you intend to use it? Like, do you plan to drive it on an external interrupt.
I could just suggest using a 4017 with 555 timer giving the pulse. You can use the same pulse as interrupt source to the microcontroller to generate the appropriate row driving voltage.
All o/p should be buffered with transistors.
I will try to tell you more as you give us the details.
On second thought, you can eliminate the 55 and use a builting timer of the microcontroller to generate the interrupt and drive the 4017. (You can use an 8 bit counter with 8o/p's instead) Make sure you put o/p 8 of the 4017 to reset.