Castle Link Beta Software Release Notes
July 19, 2010

Important information for Helicopter Pilots Upgrading to Firmware Version 3.23

The latest firmware included in this release changes the transmitter endpoints used to determine headspeed in governor mode! DO NOT FLY YOUR HELICOPTER UNTIL YOU HAVE PROPERLY CALIBRATED YOUR ENDPOINTS FOR THIS VERSION OF THE SOFTWARE!

This change was made to accommodate many of the new flybar-less systems on the market today. They have limited throttle ranges and were not able to hit the endpoints required for governor mode to arm or reach the third headspeed in governor fixed mode.

Below are two images that graphically depict how the ESC interprets throttle values (in ms) in older versions of firmware and in this release. This information should help you understand how the endpoints have changed, however, with the proper programming technique, you will not need to know the exact throttle values.

Please watch this video for a full explanation on how to calibrate your transmitter to properly operate your ESC. This procedure will work with both the old and new versions of software.

OLDER VERSION (v3.22 and below)
(click image for PDF version)

NEWER VERSION (v3.23 and above)(click image for PDF version)