Lord_Nikon
New Member
So, I decided to start an 8x8 LED matrix project using a MAX7219 and PIC18F4550. My issue I've run into is that my the LED matrix I found is a max 2.7 forward voltage drop. The MAX7219 outputs around V+ -1.The minimum amount for V+ is 4V so this will put me near the 2.7V maximum of the matrix (4V -1 = 3V) My question is, is this an okay design? or should I just buy an LED matrix that can tolerate higher voltages.
Also, what is a good way to generate 4V? I was thinking of just using an LM7805 and putting a voltage divider to create 4V . Are there better ways? or is this a decent design?
Thanks in advanced!
https://datasheets.maximintegrated.com/en/ds/MAX7219-MAX7221.pdf
Also, what is a good way to generate 4V? I was thinking of just using an LM7805 and putting a voltage divider to create 4V . Are there better ways? or is this a decent design?
Thanks in advanced!
https://datasheets.maximintegrated.com/en/ds/MAX7219-MAX7221.pdf