I am completely new to Arduino and only started using it today. I have a neopixel 8x8 LED matrix and I have been learning how to use the IED to program it to display certain colours on certain pixels/LED'S using basic online tutorials. I'm attempting to display letters one at a time on the LED matrix, however I am struggling with this. Any help would be much appreciated. Thank you.
What have you tried so far? And what are you stuck on?
If you want to produce a predetermined pattern on a matrix, you hold that in an array. For letters this takes a lot of memory so these arrays are stored in program memory, so look at how to use that for storing variables. When you want to show that letter you move the array from program memory into the Neopixel array, then do the show method to transfer this array into the NeoPixels.
Break it into small steps. First transfer one or two shape arrays from normal memory to the NeoPixels. Then when that is working, move on to getting the data from program memory.
Be very careful using IED, may lead to explosion.
If you are able to turn on and off individual LEDs, you would know your LEDs are addressed 0-63.
Making shapes is just a matter of turning on the right ones. Please show which display you have and which library you are using.
There are predefined fonts that work well for this. I know that the are in the OLED library I have used. Let me see if I can hunt it up.
'Neopixels' and '8x8 matrix' are going to turn up very different results. OP might not understand enough to know to ignore any multiplexed solutions as those are irrelevant as he's working with addressables.
Here is the file I was thinking of.
Useful for knowing which pixels to turn on and which to turn off.
Oh, this is a 5x8 font.
ssdfont.h (3.66 KB)