diff --git a/README.markdown b/README.markdown
index 2c48239..f282fb2 100644
--- a/README.markdown
+++ b/README.markdown
@@ -16,7 +16,7 @@ requirements
 
 TODO
 ====
-- [ ] [pcb](./pcb/)
+- [ ] [pcb](./pcb/) - [outputs](https://pub.yori.cc/exp/)
 - [ ] case
 - [ ] programming
 - [ ] control software