Editing 1993 (section)

===Control system===

<gallery perrow=4 heights=250px widths=250px>
File:45551 - 1993 control system game materials.png|The Termiflex controller. Note that the the first footnote says channels 1 and 2 but means channels 3 and 4 [https://www.frcarchive.com/index.php?q=post/view/45551]
File:45552 - 1993 control system game materials.png|The eight position joystick and Motorola Micro Controller channel assignments [https://www.frcarchive.com/index.php?q=post/view/45552]
File:45553 - 1993 control system game materials.png|The development, pit area, and match setups of the control system [https://www.frcarchive.com/index.php?q=post/view/45553]
File:45550 - 1993 control system game materials.png|The switch box harness [https://www.frcarchive.com/index.php?q=post/view/45551]
</gallery>

The 1993 control system was the first wireless control system and utilized a pair of [[RNet]] radios to communicate. Controllers included a Motorola Termiflex controller with four sets of buttons and an "emergency off" button and an eight-position joystick. Channels three and four controlled full-power reversible outputs on the Motorola microcontroller box while five and six offered seven-step proportional and reversible control with a "STOP" button to reset the channels to zero. The eight-position joystick was not analog and only offered full speed forward and reverse on channels one and two of the microcontroller. By rotating the joystick 45 degrees and wiring the drivetrain into channel one and two, the joystick could be used for a tank-style drivetrain.

Controllers would be plugged into a 7.5 volt power supply and the transmitter RNet for normal wireless operation. Before unpacking the robot at competition, the transmitter RNet had to be surrendered. For testing in the pits, the receive RNet would be unplugged and a tether cable would connect the controllers to the microcontroller. During matches, controllers would be plugged in to official competition transmitters that would also supply the power to the controllers and connect with the receive RNet.

For prototyping and testing, the kit of parts also included a switch box harness that functioned similar to the [[1992]] control system and allowed one to easily control two motors at full speed forward and backward. It was recommended to use this harness to cut down on stress on the microcontroller and relays of the normal control system.

Robots were powered by a single drill battery that fit into a shell normally used to charge the batteries. The battery holders were wired directly to the microcontroller box. All motors and other electrical devices must be wired into the Motorola microcontroller box with the supplied connectors. Relays in the microcontroller box would allow the microcontroller to trigger motor outputs based on the signals being received from the RNet.

Available motors included two larger Delco motors, typically used in the drivetrain, and smaller ECM gearmotors and a Portescap motor typically used in mechanisms. A 9-volt battery could also be used to power components of the robot as long as they did not cause balls to move after the end of a match.