diff --git a/ToDo.md b/ToDo.md
index 5d08b7b..f9c0943 100644
--- a/ToDo.md
+++ b/ToDo.md
@@ -1 +1,20 @@
-Welcome to the Wiki.
\ No newline at end of file
+# HW
+
+## Electronics
+
+- [ ] Choose display(s)
+- [ ] which uC?
+     - [ ] what kind of SW?
+- [ ] battery + loading circuit
+- [ ] NFC reader
+- [ ] internet access (wifi? gsm? tethering via BT?)
+
+## Case
+
+Candidate: https://www.printables.com/model/911614-pokedex
+
+- [ ] Hollow out model and make room for electronics inside
+
+# SW
+
+- [ ] 
\ No newline at end of file