51 lines
2.5 KiB
Markdown
51 lines
2.5 KiB
Markdown
## Chained Panels example - Chaining individual LED matrix panels to make a larger panel ##
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This is the PatternPlasma Demo adopted for use with multiple LED Matrix Panel displays arranged in a non standard order (i.e. a grid) to make a bigger display.
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### What do we mean by 'non standard order'? ###
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When you link / chain multiple panels together, the ESP32-HUB75-MatrixPanel-I2S-DMA library treats as one wide horizontal panel. This would be a 'standard' (default) order.
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Non-standard order is essentially the creation of a non-horizontal-only display that you can draw to in the same way you would any other display, with VirtualDisplay library looking after the pixel mapping to the physical chained panels.
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For example: You bought four (4) 64x32px panels, and wanted to use them to create a 128x64pixel display. You would use the VirtualMatrixPanel class.
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[Refer to this document](https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA/blob/master/doc/VirtualMatrixPanel.pdf) for an explanation and refer to this example on how to use.
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### Steps to Use ###
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1. [Refer to this document](https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA/blob/master/doc/VirtualMatrixPanel.pdf) for an explanation and refer to this example on how to use.
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2. In your Arduino sketch, configure these defines accordingly:
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```
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#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
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#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
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#define NUM_ROWS 2 // Number of rows of chained INDIVIDUAL PANELS
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#define NUM_COLS 2 // Number of INDIVIDUAL PANELS per ROW
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#define PANEL_CHAIN NUM_ROWS*NUM_COLS // total number of panels chained one to another
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#define VIRTUAL_MATRIX_CHAIN_TYPE <INSERT CHAINING TYPE HERE - Refer to documentation or example>
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```
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VIRTUAL_MATRIX_CHAIN_TYPE's:
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3. In your Arduino sketch, use the 'VirtualMatrixPanel' class instance (virtualDisp) to draw to the display (i.e. drawPixel), instead of the underling MatrixPanel_I2S_DMA class instance (dma_display).
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#### Thanks to ####
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* Brian Lough for the Virtual to Real pixel co-ordinate code.
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YouTube: https://www.youtube.com/brianlough
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Tindie: https://www.tindie.com/stores/brianlough/
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Twitter: https://twitter.com/witnessmenow
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* Galaxy-Man for the donation of hardware for testing.
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