diff --git a/README.md b/README.md
index 64910cd..d509990 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,11 @@
# esp32-eyes
Emotive animated eyes on an OLED display, as inspired by Anki Cozmo etc.
+
+Inspired by the expressive eye animations of the Anki "Cozmo" robot, this Arduino/ESP8266/ESP32 library displays a set of animated eyes on a small 128x64 OLED screen.
+Unlike some libraries which require a set of bitmap images for each frame of animation, this library draws each frame dynamically from a programmatic set of parameters.
+
+Heavily based on this library, although with significant adjustments:
+
+ - OLED (using u8g2) rather than TFT (based on eSPI_TFT)
+ - Horizontal rather than vertical alignment
+ - Mirrored left/right eye animations