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--- a/README.md
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@@ -1,3 +1,21 @@
 # DigitalUhr
 
-The un-smart digital watch
\ No newline at end of file
+The un-smart digital watch
+
+
+Display:
+  https://www.sharpsecd.com/static/media/Sharp-LCD-Specification-LS012B7DD06A-12-2-19.4b439705.pdf
+
+dev board:
+  Adafruit Clue
+  https://www.adafruit.com/product/4500
+
+GUI lib:
+  https://lvgl.io/
+
+Watch OS:
+  https://github.com/InfiniTimeOrg/InfiniTime
+
+
+P8 hacking:
+  https://hackaday.com/2020/05/02/cheap-smartwatch-hacking-to-run-your-own-code/