Merge branch 'development'

README.md

@@ -90,7 +90,21 @@ For the meantime you can use the script "SetValveIng.py".
 
 
 
+Calibration of Loadcell 
+---
 
+HOW TO CALCULATE THE REFFERENCE UNIT
+To set the reference unit to 1. Put 1kg on your sensor or anything you have and know exactly how much it weights.
+In this case, 92 is 1 gram because, with 1 as a reference unit I got numbers near 0 without any weight
+and I got numbers around 184000 when I added 2kg. So, according to the rule of thirds:
+If 2000 grams is 184000 then 1000 grams is 184000 / 2000 = 92.
+
+After you have calculate your reference then go to Hector9000/conf/HectorConfig.py
+and set the 
+
+    "hx711": {
+        "ref": 2145  # REFERENCE VALUE
+        }
 
 Development on non-Hector hardware :
 ---