How to lower throttle µs?

I have an X650 Value V4 and the APM2 but I'm having trouble calibrating the ESCs as they won't arm. I read on another forum that the X650 ESCs run from 200 - 1000µs rather than 1000-2000µs. When I check in APM the throttle goes from 1127 -1927, but when I check in the Parameter List it says THR_MAX 1000 and THR_MIN 0 so how do I lower the throttle from 1127-1927 to 175-1000?

I have DX8 with an AR8000 but there doesn't seem to be anywhere I can program this on the transmitter so I guess I have to do it in APM (?).

Views: 77

▶ Reply to This

Replies to This Discussion

Permalink Reply by Andre on May 18, 2012 at 4:23am

will it help to play with the sub trims on your radio?

Permalink Reply by Geir R on May 18, 2012 at 5:23am

I doubt it as the radio never refers to the µs numbers, only percentage. It's 100% 100% now and it can be adjusted 150% but I can't get it lower than 0%.

It seems that the ESCs are armed now though but I can't calibrate them. I've tried both auto and manual but the ESCs never beep so I'm suspecting that they never get the correct µs to trigger the calibration. That would also be a problem with the manual calibration though as the ESCs are directly connected to the throttle of the RX, so I'm a bit stumped here. Why would Xaircraft use ESCs that can't be calibrated by the biggest radio-manufacturer there is?

Permalink Reply by Andre on May 19, 2012 at 2:57pm
I know xa stuff is quit diferent than normal esc, try another make esc.
Permalink Reply by Geir R on May 19, 2012 at 5:35pm

I know, but I'm going for the cheaper solution here. :)

RSS

Social Networking

Top Content 

1 APM 2.5 with NEO-6M ublox gps (not 3DR LEA-6)

APM 2.5 with NEO-6M ublox gps (not 3DR LEA-6)
2 APM Copter 2.9.1.b has been released

APM Copter 2.9.1.b has been released
3 APM Project vs DJI NAZA and WOOKONG

APM Project vs DJI NAZA and WOOKONG
4 Flying 3D Spline Curves between Waypoints with ArduCopter 3.0

Flying 3D Spline Curves between Waypoints with ArduCopter 3.0
5 Misadventures in power electronics

Misadventures in power electronics
6 Drone shot down by police

Drone shot down by police
7 MAAT final version is being tested

MAAT final version is being tested
8 10k autonomous flight - telemetry guided flight, and other APM tests!

10k autonomous flight - telemetry guided flight, and other APM tests!
9 ArduPlane 2.73 released

ArduPlane 2.73 released
10 Help Tuning Arduplane 2.73 With A Large Slow Airframe

Help Tuning Arduplane 2.73 With A Large Slow Airframe

Contests

Season Two of the Trust Time Trial (T3) Contest has now begun. The fourth round is an accuracy round for multicopters, which requires contestants to fly a cube. The deadline is April 14th.

A list of all T3 contests is here. 

Groups

Advertisement

© 2013   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service