diff --git a/ADC-Control.md b/ADC-Control.md
index e868d48..421bf06 100644
--- a/ADC-Control.md
+++ b/ADC-Control.md
@@ -1,3 +1,5 @@
+This variant can be used with potentiometers or hall sensors.
+
 # Wiring:
 * Connect blue wire to steering and green wire to speed
 * Use 3.3v from programming port or a voltage regulator