User's Manual

Transmitter Reference
Batteries: The GC-205 Transmitter runs on 4 standard “AA” size cells. Alkaline, NiCd, or NiMH
1.5v cells may be used.
LEDS: The transmitter has 3 LEDs that give basic feedback information.
All three LEDs blink one after another when the transmitter is not connected to the receiver. Once
connected the LEDs have the following meanings:
•Link LED: Turns on when a link is established and flashes slightly to show activity. Turns off
briefly to indicate a lost message.
•TX Battery LED: Flashes to indicate that the transmitter batteries are getting low.
•RX Battery LED: Flashes to indicate that the robot’s batteries are getting low. (Note the
voltage sensor that triggers this alert is not installed in the standard Bombot configuration)
Trims: The steering and throttle trims can adjust the center positions on these servos by up to
25% of their range.
Bind Button: The Bind Button, mounted on the back of the unit provides several functions.
•Reset to Factory: To reset the transmitter to factory settings, hold the bind button while
powering on the unit. The Link LED will flash rapidly for 3-4 seconds then remain on for ½
second while all settings are returned to factory defaults.
•Reversing: After booting, if the bind button is held for 1 second the transmitter enters
reversing mode. The Link LED will flash rapidly to indicate Reversing is active. Move a control to
its upper limit to reverse the channel, or to its lower limit to set the channel to normal.
Otherwise the channel maintains its previously set mode. Press the release button to toggle
reversing for the release channel. Release the bind button to return to normal operation.
During reversing setup, the Link LED will flash rapidly. The Speed Switch controls the operation
of the TX Bat and RX Bat LEDs:
TX Bat LED RX Bat LED
Speed Low Steering* Reversed Throttle* Reversed
Speed Med Pan Reversed Tilt Reversed
Speed High Release Reversed Off
* In Tank Mode Steering becomes the Right track and Throttle
becomes the Left track.
•Unbind: In other situations, pressing the bind button will erase the connection with the
current receiver and sets the transmitter to seek other receivers that are either unbound or
already bound to this transmitter. Hold the bind button until all three LEDs turn on and then
release it immediately.
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