From ce39103238d2620563c83539c5b8d50fa8987282 Mon Sep 17 00:00:00 2001
From: Sam Calisch <sam.calisch@cba.mit.edu>
Date: Tue, 5 Sep 2017 15:55:48 -0400
Subject: [PATCH] Update README.md

---
 README.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index bb8254c..6cadd8f 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,9 @@
 
 <a href='as5013-test'>as5013-test/</a> contains pcb source files for a board to evaluate 3d tracking using the AS5013 (nominally an 8-bit 2-axis device).  This IC contains an array of 5 hall effect elements for measuring $B_z$, sampled to 12-bits internally with these raw values available over I2C.  
 
-<img src='as5013-test/testing.jpg' width=400px>
+<img src='as5013-test/testing2.jpg' width=400px>
+
+To characterize the use of the AS5013 as a three-dimensional tracking device, we use a 5 axis stage (2 axes motorized, 3 manual) built around two Thorlabs PT1M micrometer stages.  After setting a magnet height and orientation, we can sample the 5 hall elements over a two dimensional array of magnet displacements.  Executing this for a handful of magnet heights should let us fit functions for X, Y, and Z in terms of the 5 hall readings.
 
 ## 6 DOF Concept
 
-- 
GitLab