Clean-up and fix some examples

1 files changed, 51 insertions, 0 deletions

diff --git a/examples/VirtualMatrixPanel/README.md b/examples/VirtualMatrixPanel/README.md
new file mode 100644
index 0000000..c5aca88
--- /dev/null
+++ b/examples/VirtualMatrixPanel/README.md
@@ -0,0 +1,51 @@
+## Chained Panels example - Chaining individual LED matrix panels to make a larger panel ##
+
+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.
+
+![334894846_975082690567510_1362796919784291270_n](https://user-images.githubusercontent.com/89576620/224304944-94fe3483-d3cc-4aba-be0a-40b33ff901dc.jpg)
+
+### What do we mean by 'non standard order'? ###
+
+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.
+
+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.
+
+For example: You bought four (4) 64x32px panels, and wanted to use them to create a 128x64pixel display. You would use the VirtualMatrixPanel class.
+
+[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.
+
+
+### Steps to Use ###
+
+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.
+
+2. In your Arduino sketch, configure these defines accordingly:
+```
+#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module. 
+#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
+
+#define NUM_ROWS 2 // Number of rows of chained INDIVIDUAL PANELS
+#define NUM_COLS 2 // Number of INDIVIDUAL PANELS per ROW
+
+#define PANEL_CHAIN NUM_ROWS*NUM_COLS    // total number of panels chained one to another
+
+#define VIRTUAL_MATRIX_CHAIN_TYPE <INSERT CHAINING TYPE HERE - Refer to documentation or example>
+	
+```
+VIRTUAL_MATRIX_CHAIN_TYPE's:
+![image](https://user-images.githubusercontent.com/12006953/224537356-e3c8e87b-0bc0-4185-8f5d-d2d3b328d176.png)
+
+
+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).
+
+
+#### Thanks to ####
+* Brian Lough for the Virtual to Real pixel co-ordinate code.
+
+YouTube: https://www.youtube.com/brianlough
+
+Tindie: https://www.tindie.com/stores/brianlough/
+
+Twitter: https://twitter.com/witnessmenow
+
+* Galaxy-Man for the donation of hardware for testing.