PA3HCM PROPOSE AUTOMATIC ANTENNA TUNER USING ARDUINO

Ernest PA3HCM connected an old SWR meter to Arduino board. Furthermore Ernest build a simple L-tuner with a fixed coil and a rotating capacitor. The capacitor is driven by a servo, also connected to the Arduino. By doing a full sweep with the capacitor, the Arduino tries to find the position with the lowest SWR. After the sweep it turns the capacitor to that position. You can view the video below to see the tuner version 2 in action. Mind the SWR meter (right needle) in the back while the capacitor is rotating.


References: ( http://ernest.utreg.net/?page=arduino-tuner )