diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,3 +1,8 @@
-# EC-Meter for ESP32
+# ESP32 for reading Hydroponic sensors
+
+- EC: https://git.ctdo.de/interfisch/conductivity-sensor
+- Temperature: DS18B20
+- Waterlevel: Ultrasonic HC-SR04
+- Flow
+- etc.
 
-Circuit from: https://publiclab.org/notes/bhickman/05-09-2016/conductivity-and-temperature-meter