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@@ -1,3 +1,8 @@
-# EC-Meter for ESP32
+# EC-Meter
 
 Circuit from: https://publiclab.org/notes/bhickman/05-09-2016/conductivity-and-temperature-meter
+
+EC sensor for measuring electrical conductivity of liquids.
+VCC=5V
+Frequency 5kHz from uC.
+Outputs an analog voltage.