NodeMCU Projects: Difference between revisions
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= MAX7219 based 8x8 LED Matrix = |
= MAX7219 based 8x8 LED Matrix = |
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Source: [https://github.com/vrialland/micropython-max7219 github.com] |
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*Download below Library and upload it to NodeMCU: |
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https://github.com/vrialland/micropython-max7219/blob/master/max7219.py |
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* Static Testing: |
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<syntaxhighlight lang="python"> |
<syntaxhighlight lang="python"> |
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from machine import Pin, SPI |
from machine import Pin, SPI |
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spi = SPI(1, baudrate=10000000) |
spi = SPI(1, baudrate=10000000) |
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screen = max7219.Max7219(32, 8, spi, Pin(15)) |
screen = max7219.Max7219(32, 8, spi, Pin(15)) |
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screen.text('ABCD', 0, 0, 1) |
screen.text('ABCD', 0, 0, 1) # |
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screen.show() |
screen.show() |
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</syntaxhighlight> |
</syntaxhighlight> |
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* Command explaination |
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screen.text("ABCD",x,y,z) |
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ABCD = Text to be displayed |
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x = Horizontal Position |
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y = Vertical Position |
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* Scroll Text: |
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<syntaxhighlight lang="python"> |
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for i in range(10): |
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screen.text("ABCD",i,0,1) |
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screen.show() |
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time.sleep(1) |
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screen.init_display() |
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</syntaxhighlight> |
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<br /> |
<br /> |
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