8x8 dot matrix 사용하기
https://m.blog.naver.com/eduino/221130299439
direct_arduino2dotmatrix.ino
1088BS(Common Row Anode)
https://medium.com/jlouage/arduino-led-matrix-8-8-max7219-and-arduino-uno-r3-5353a6b915db
1088as(Common Row Cathod)
R >=40kohm
https://m.blog.naver.com/eduino/221130299439
direct_arduino2dotmatrix.ino
1088BS(Common Row Anode)
https://medium.com/jlouage/arduino-led-matrix-8-8-max7219-and-arduino-uno-r3-5353a6b915db
1088as(Common Row Cathod)
R >=40kohm
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