notes on how this should evolve

diff --git a/Notebook b/Notebook
index eb6f56d58a68ace75c0389c92ea3517c7f292e8e..2f6fe2e0412f2b5020d9eb93325ba30540584064 100644 (file)
--- a/Notebook
+++ b/Notebook
@@ -5,3 +5,20 @@
 - add another 2-pin header to PA8 (MCO) so we can sample the master clock to
   calibrate the SOC oscillator, which means moving the RED RF strength LED to
   some other gpio line
+
+2019.10.31
+- The more I think about this project, the more I want to go back to a board
+  that just does one each load cell and pressure sensor.  I just haven't ever
+  actually used anything else.
+
+  Discussion with Joe Bowen made it clear that if I were to design such a 
+  board so that it could take option cards, and/or had just a pile of basic
+  analog inputs and maybe switch outputs available, that doing other stuff
+  could be fun, and we'd "grow the system as we need to".  Every time I tried
+  to pin him down on specs, all I got was vagueness.
+
+2020.01.18
+- Maybe the right answer is to move to the ADS131A02 which is the 2-channel
+  version of the acquisition chip, and costs less.  That would support one
+  pressure sensor and one load cell.  Then make it possible to add on other
+  acquisition boards somehow.