RoboteQ AX2550/2850 user manual Automatic Joystick Calibration

R/C Operation

There are two methods for calibrating the joysticks:

•The automatic method is the simplest and is based on the controller “learning” the joystick’s parameters using the simple training sequence described below.

•The manual method lets you enter actual timing numbers directly in the controllers flash memory using your PC running the Roborun configuration utility. This method is described in “Loading, Changing Controller Parameters” on page 162.

New Desired

Center Position

Min Min

Reverse Forward

Max	Max
Reverse	Forward

FIGURE 53. Calibration example where more travel is dedicated to forward motion

Automatic Joystick Calibration

To calibrate the joystick(s) follow these steps:

•Press and hold the Program button while resetting or power up the controller

•After 10 seconds, the controller will enter the Program mode and flash the first parameter (I) and its value (0 if set R/C mode)

•Turn the R/C transmitter and receiver On

•Press the Program button several times until the letter “J” is displayed. If you missed it, keep pressing the Program button for another cycle.

•When the display flashes the letter “J” followed by the “-” sign, press the Set but- ton

•When the display flashes the letter “J” followed by “o”, the controller has entered the joystick calibration mode

•Move each joystick to the desired minimum and maximum position several times

•Move back the joystick(s) to the desired center position

•With the joystick(s) in the center position, press the Program button to record the change permanently in the controller’s Flash memory.

•Restart the controller by pressing the Reset button or cycling the power.

To reset the controller to factory default or to program the joystick’s positions using numer- ical values, see “Configuring the Controller using the Switches” on page 153 and “Using the Roborun Configuration Utility” on page 159.

82 AX2500/2850 Motor Controller User’s Manual Version 1.7. February 1, 2005