Automatic Antenna Tuner for QRP with Android and Arduino - Part 1

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This video contains an improved version of my antenna tuner controlled by Android and Arduino via Bluetooth.

Documentation about this project on

At this time I added an home-brew SWR meter for QRP to the system.

During the course of the capacitor of the antenna tuner, the Arduino saves the capacitor position and records the value of the SWR.
Once known position of the capacitor which results in lowest SWR, the tuning is performed.

Documentation:

Download Photos, Schematic and docs -
Download the Android source (Eclipse Project) -
Download the Arduino source -

See also.
Automatic Antenna Tuner for QRP with Android and Arduino - Part 2 -
Antenna Tuner controlled by Arduino and Android via bluetooth -
Antenna Tuner controlled by Arduino and Android Teste I -
Magnetic Loop Antenna controlled by Arduino -

73.
PU2CLR.
Ricardo.