One weekend while attending a conference together, we got to wondering if
we couldn't adapt one to use as a downlink for the
-[AltusMetrum](../AltusMetrum/) altimeter board in addition to direction
+[OpenAlt](../OpenAlt/) altimeter board in addition to direction
finding after flight. That caused us to start thinking about other things
in the design we might want to tweak, and before long we were working on the
design of a new tracker board derived from the BeeLine design.