diff --git a/notes-from-r3.txt b/notes-from-r3.txt
index 528c67c..6e2b0e4 100644
--- a/notes-from-r3.txt
+++ b/notes-from-r3.txt
@@ -4,3 +4,6 @@ sd card holder needs to be inset
 trs esd protection footprint is wrong
 should esp en be a pulldown? then it's off unless the samd turns it on
 do we need inrush current limiting after the 3v3 reg?
+bump up sd card cp to 47uF, add ferrite after sd mosfet. something like:
+ - TDK NLCV32T-1R0M-PF
+ - EMTEK LCD0805-R82K-T