User's Manual

Setting Up a Robot
When the GC-205 transceiver is initially installed on a Bombot, the first task is to set the
transceiver’s failsafe positions. Ensure that the wheels are not touching the ground.
On power up, the robot will immediately go to failsafe positions:
•If it powers up, and centers the steering wheels, and does not accelerate, then failsafes are
correctly configured.
•If the servos do not show movement (steering servo does not center itself, and shows no
resistance to being moved by hand), then the transceiver does not have power. Check the
connection to the electronic speed control, and the battery charge on the vehicle.
•If the servos assume another position (such as the throttle accelerating by itself on power on),
then set the failsafes as explained below.
Setting Failsafes: Once connected to the robot, adjust the trims and controls until the robot has
come to a complete stop, with the camera and steering centered. Hold the bind button on the
receiver for 4 seconds and the receiver will save these settings to memory and will revert to this
position on power on, or whenever the signal to the transmitter is lost.
The configured camera position will be used as the center point. This position will be taken when
both transmitter camera controls are centered; other control positions are an offset from the saved
position. This may cause the camera to move when the bind button is released.
Binding: Once the failsafes are correctly set, the user can “bind” (connect) to the Bombot:
1.Power on the Bombot
2.Briefly press the bind button on the Bombot transceiver (frees it to accept connections from
any GC-205 transmitter operating in the area)
3.Ensure that GC-205 transmitter speed switch is set to ‘L’ (Low speed)
4.Power on GC-205 transmitter
5.Briefly press the bind button on transmitter (located on back, near the antenna)
6.Wait until Link LED goes on steadily. Test control with joystick
7.Put Bombot on ground to drive.
At this point the GC-205 transmitter is bound to the GC-205 transceiver on the Bombot. Each will
seek to connect to the other whenever powered on.
Configuring the Video Transmitter: The GC-205 transceiver contains a built in radio frequency
filter to allows the radio to be used in close proximity to other radio transmitters mounted on the
same robot. This filter blocks interference from other radios operating at frequencies below 2430
MHz. If the GC-205 is used on a robot that uses another 2.4 GHz transmitter, ensure that the other
transmitter is set to a channel below 2430 MHz. For a typical 2.4 GHz analog camera, this means
using channel 1,2 or 3.
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