diff --git a/README.md b/README.md
index 2580dff..9fb845f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,8 @@
 Once you have downloaded the Zip file, it should be extracted into your Arduino Libraries folder and the folder renamed to "LEDMatrix".
 
 For full instructions see the Wiki icon on the right.
+
+## Compatibility with SmartMatrix supported RGBPanels
+NeoMatrix displays can be big, typically 1cm^2 per pixel, sometimes more. If you need Matrices that are both smaller and cheaper, you can use RGBPanels which are supported by SmartMatrix: https://github.com/pixelmatix/SmartMatrix
+
+If you also install https://github.com/marcmerlin/SmartMatrix_GFX you get a compat layer that lets you run FastLED and LEDMatrix code. See https://github.com/marcmerlin/FastLED_NeoMatrix_SmartMatrix_LEDMatrix_GFX_Demos/tree/master/LEDMatrix for examples.