diff --git a/notes.md b/notes.md
index 6963736..a8e2225 100644
--- a/notes.md
+++ b/notes.md
@@ -3,6 +3,12 @@
 This is where I'm putting my notes on this project and where I'm hitting
 challenges in setting up stuff.
 
+Ideally I'll be able to setup stuff so that the micro controller can be
+abstracted. This way each family of controllers can have their own directories.
+
+At the very least I plan to support the cortext m0+, m3 and m4..maybe at some
+point I'll also add support for the H7 series.
+
 ## Challanges
 
 - [ ] linker stuff.