QuickSet Pan-Tilts have been built with a number of different Integrated Control (IC) circuit boards since they were introduced in January 2002, butthey all share some common elements. Each IC unit features:

·Independent, variable speed (PWM) motor drives for the Pan and Tilt       motors.

·P&T Position feedback

·RS232/RS422 communication to host system

·32 Preset Positions, plus “tour” capability

Early units were designed with two different communication transceivers (1 for RS232 and 1 for RS422). They required the user to move a jumper and a connector on the PCB to switch between the two styles of serial communication.

When QuickSet introduced the “QuickEye” product in December 2002 we took capabilities of the previous IC models and added several new and important features:
·RS485 serial communication
·Camera control
·Lens control
·Auxiliary switching
·24VAC capability
·Continuous rotation capability

How updated features changed the product into the QuickEye:
RS485 communication is wired electrically identical to RS422, as it uses “differential” drivers. What is different in the QuickEye than in the IC units is that the QuickEye uses an address byte to allow the user to daisy chain multiple units together, yet be able to address an individual pan-tilt. This feature required a change in our protocol to allow for the address byte, which is why the “QuickEye” protocol is different than our original IC units.
Camera control and the ability to interface to cameras has multiple elements. What has been of most interest to our customers is the ability to send serial camera commands to the camera through the QuickEye. There is a command in our protocol (62H) that allows the user to build a serial string for the camera, “pre-pend” and “append” the appropriate control characters for the pan-tilt and send it. The pan-tilt strips away the control characters and passes the camera command to the camera. The camera can talk back to the host in the same manner. This means with a single serial port the user can address both the pan-tilt and the camera.
The board also has 12V 1A power available, which was designed to be a source of power for most cameras, meaning that the user does not need to supply additional power leads.