50 lines
2 KiB
Markdown
50 lines
2 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
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displays arranged in a non standard order
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### What is a non standard order? ###
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When you connect multiple panels together, the library treats the
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multiple panels as one big panel arranged horizontally. Arranging
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the displays like this would be a standard order.
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```
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[ 4 ][ 3 ][ 2 ][ 1 ] (ESP32 is connected to 1)
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```
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If you wanted to arrange the displays vertically, or in rows and
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columns this example might be able to help.
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```
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[ 4 ][ 3 ]
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[ 2 ][ 1 ]
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```
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It creates a virtual screen that you draw to in the same way you would
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the matrix, but it will look after mapping it back to the displays.
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### Steps to Use ###
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1) In ESP32-RGB64x32MatrixPanel-I2S-DMA.h:
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- Set the MATRIX_HEIGHT to be the y resolution of the physical chained panels in a line (if the panels are 32 x 16, set it to be 16)
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- Set the MATRIX_WIDTH to be the sum of the x resolution of all the physical chained panels (i.e. If you have 4 x (32px w x 16px h) panels, 32x4 = 128)
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2) In the sketch:
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- Set values for NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y. There are comments beside them
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explaining what they are in more detail.
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- Other than where the matrix is defined and matrix.begin in the setup, you should now be using the virtual display
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for everything (drawing pixels, writing text etc). You can do a find and replace of all calls if it's an existing sketch
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(just make sure you don't replace the definition and the matrix.begin)
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- If the sketch makes use of MATRIX_HEIGHT or MATRIX_WIDTH, these will need to be replaced with the width and height
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of your virtual screen. Either make new defines and use that, or you can use virtualDisp.width() or .height()
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#### Contributor ####
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Written by Brian Lough
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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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