1_8x8_led_matrix_simple_letter_prints Prints letters to the matrix of LEDs. Made in 2019 1_8x8_led_matrix_simple_letter_prints.mp4 2_RGB-LED-when-dark_comp Turns on an RGB led when it's dark, using a photo resistor. Gives emphasis on blue (which is hard to set). Made in 2023 2_RGB-LED-when-dark_comp.mp4