Hello! I just got a brand-new Arduino Uno R4 Wifi and I was playing around with the LED matrix. How do I change the color of the pixels that i'm lighting up?
You can change to any color you like - as long as it's red.
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Can I change it to a color other then red?
No.
The Arduino UNO R4 Wifi LEDs are monochromatic (red).
" * LED matrix: The UNO R4 WiFi incorporates a bright 12x8 red LED matrix, ideal for creative projects with animations or plotting sensor data, eliminating the need for additional hardware.
Ref: "Arduino® UNO R4 WiFi — Arduino Online Shop
See the schematic.
"https://docs.arduino.cc/resources/schematics/ABX00087-schematics.pdf
Is it okay to turn on all 96 Matrix LEDs continuously?
Will this use too much current from the output pins?
It should be fine. I wouldn't think they'd make a product that would fry itself in normal use!
You actually can not turn on all of the LED's at once, although the code allows you to approximate it. You can logically set all of the leds to look like they are on... But using the library code at most only one will be on.
That is there are 11 IO pins that control the 96 leds. So the library code actually only turns on one led at a time, which led changes 1000 times per second. So it looks like multiple ones are on.
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