Direct Android USB/RS232 Control for Sony Visca Robotic Pan/Tilt/Zoom Cameras. Test your connection setup to control Sony EVI-D30, D70, D80, D90, etc. with Android device supporting OTG USB. Requires FTDI-based USB/RS232 cable, OTG cable, and a camera. This app performs some command operations to test the control capability of your Android device with your camera. FREE OF CHARGE.