Requirements

• Android 4.1 or newer device (tested only using 4.2, 5.1).
• OTG USB port.
• Root access.
• Supported Pentax camera (check the list here).
• A cable which connects the android device and a camera.

Features

Right now the program is very-very simple:

• The program automatically connects to the camera (the bottom red line shows this info).
• The program continuously updates basic info like: shutter speed, aperture,...
• You can press the Focus button to focus.
• You can press the Shutter to make pictures. You can specify the number of frames (left widget) and the delay between the frames (right widget - seconds).
• The program shows the last picture and the progress of the exposure series.
• The pictures are stored in /mnt/sdcard/pktriggercord. You can check the picture using RawDroid.
• Output directory can be changed in Preferences