describe mechanical(?) glitch in the NOTES
[pulsecounter.git] / NOTES
diff --git a/NOTES b/NOTES
index 97c40c2fcb24643dcd3fcf77e90773e3ae5a3ad2..6a5a7f00ee5d1b8f3c19401f11570a5d50134b6c 100644 (file)
--- a/NOTES
+++ b/NOTES
@@ -205,3 +205,33 @@ NUCLEO-L053R8 (STM32L053R8T6)
 http://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/LN1847/PF260001
 X-NUCLEO-IDB05A1 (SPBTLE-RF)
 http://www.st.com/web/catalog/tools/FM146/CL2167/SC2006/LN1988/PF262191
+
+===================
+Apparent hardware glitch:
+
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+| 2015-12-28 06:19:15 |    96 |
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+>>
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+| 2015-12-28 06:56:59 |   108 |
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+| 2015-12-28 06:57:02 |   110 |
+<<
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+| 2015-12-28 18:53:29 |   113 |
+
+selected eight lines are bogus. Mechanical counter reading is less by
+eight than counted by the software. Apparently triggered by high flow
+of hot water (still definitely not 500 l/min high!).
+