diff --git a/Input-Calibration.md b/Input-Calibration.md
index 45ee57c..d77b7d0 100644
--- a/Input-Calibration.md
+++ b/Input-Calibration.md
@@ -32,6 +32,23 @@ The [Nunchuk](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant
 This type of input will be automatically be identified when you proceed with the [auto-calibration](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Input-Calibration#auto-calibration).<br>
 The [ADC](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant-ADC) variant is using such input types.
 
+# ADC Protection
+ADC Protection helps identify if wires are disconnected when using ADC control(ADC and HOVERCAR variants).<br>
+It identifies when the measured ADC value is below MIN - ADC_PROTECT_THRESH or above MAX + ADC_PROTECT_THRESH.<br>
+If detected, the board will enter the ADC timeout state and generate 2 beeps(low pitch).<br>
+
+Prerequisites are:
+* using pull down resistors so the input is pulled to ground/0V when the wire is disconnected
+* your input should have enough gap between 0 and MIN
+
+0ADC/0V<--->MIN<---MID--->MAX<--->4095ADC/3.3V<br>
+The auto-calibration will let you know with a high pitch beep if the inputs can be protected, you can also see it in the debug output.<br>
+This is usually not the case with potentiometer that use the full 0-3.3v range.
+
+Those are the parameters to adjust the ADC protection:
+* ADC_PROTECT_THRESH : to adjust the threshold below/above the MIN/MAX ADC values that will trigger ADC protection
+* ADC_PROTECT_TIMEOUT : number of wrong / missing input commands before safety state is taken
+
 
 # Manual Calibration:
 Manual Calibration has to be done in [config.h](https://github.com/EFeru/hoverboard-firmware-hack-FOC/blob/master/Inc/config.h) in the section related to the variant you have selected.<br>