diff --git a/Variant-PPM.md b/Variant-PPM.md
index 5fb25c2..411eaa1 100644
--- a/Variant-PPM.md
+++ b/Variant-PPM.md
@@ -8,6 +8,9 @@ Default number of channels for PPM in config.h is 6.
 ⚠ Red wire from sensor cable delivers 15v !!!
 Use 3.3v from programming port, 5v from hall sensor cable, or a voltage regulator.
 
+## Calibration:
+Proceed with [calibration](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/wiki/Calibration) for better control.  
+
 ## Troubleshooting:
 
 If the board is beeping