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add zener to protect ADC load cell input
[hw/quantimotor]
/
Notebook
diff --git
a/Notebook
b/Notebook
index 9253da80a486ff670758acfbb9d1af2e304d3718..e1a0392477544d90748aef5dbcece0e72b2a2fe1 100644
(file)
--- a/
Notebook
+++ b/
Notebook
@@
-111,3
+111,7
@@
- merged bdale-ui, resolving conflict in altoslib/AltosCSV.java
- merged ads131, resolving conflict in src/kernel/ao_data.h
- merged bdale-ui, resolving conflict in altoslib/AltosCSV.java
- merged ads131, resolving conflict in src/kernel/ao_data.h
+- improper gain setting or higher than expected mV/V on load cell can easily
+ drive INA125 output above the 5V allowed by ADC input. adding a 5.1V, 500mW
+ zener between INA125 and ADC to clamp that and protect the ADC
+