Hi, seit 2 Tagen gibt es die RC 4:
ArduCopter 3.1-rc4 13-Oct-2013
Improvements over 3.1-rc3
1) Performance improvements to resolve APM alt hold issues for Octacopters:
a) SPI bus speed increased from 500khz to 8Mhz
b) Telemetry buffer increased to 512bytes
c) broke up medium and slow loops into individual scheduled tasks and increased priority of alt hold tasks
2) AutoTune enabled by default
3) Bug fix for Pixhawk USB connection
4) GPS Glitch improvements:
a) added GPS glitch check to arming check
b) parameters for vehicle max acceleration (GPSGLITCH_ACCEL) and always-ok radius (GPSGLICH_RADIUS)
ArduCopter 3.1-rc4 13-Oct-2013
Improvements over 3.1-rc3
1) Performance improvements to resolve APM alt hold issues for Octacopters:
a) SPI bus speed increased from 500khz to 8Mhz
b) Telemetry buffer increased to 512bytes
c) broke up medium and slow loops into individual scheduled tasks and increased priority of alt hold tasks
2) AutoTune enabled by default
3) Bug fix for Pixhawk USB connection
4) GPS Glitch improvements:
a) added GPS glitch check to arming check
b) parameters for vehicle max acceleration (GPSGLITCH_ACCEL) and always-ok radius (GPSGLICH_RADIUS)