ESCs in and out of calibration

I have calibrated my 4 ESCs from my 3DR kit on several occassions, mostly via the manual method, but they seem to intermitently indicate that they need recalibration.

I turn on the copter and sometimes, all 4 ESCs initialize nominally, but other times some of them continue to beep as if they need calibration. This varies from day to day. I don't understand why they would be in perfect calibration one day and randomly indicated need for calibration on another day.

Additionally, sometime 3 of the ESCs will beep as if needing calibration, but if I'm patient and don't do anything, they will stop beeping one by one and I can go fly. What would cause the beeping to magically stop?

Views: 86

▶ Reply to This

Replies to This Discussion


DeveloperPermalink Reply by jasonshort on December 12, 2011 at 11:40am

Check out the in the field calibration technique. It works great in version 55 and above. 

Maybe your throttle is too high? These ESC's don't like to have neutral above a certain PWM.Try and lower it with trims and reset up your radio, esc Calibration.

Jason

Permalink Reply by Pat on December 12, 2011 at 11:54am

Thanks, Jason. I successfully did the field calibration technique on Saturday.

I'm not sure what you mean by having my throttle too high. There were 2 times that I "set" the throttle. Once in the APM Planner, I set the throttle PWM limits along with pitch, roll, and yaw. And then when I calibrated the ESCs, I set the throttle high and then low. When you are referring to "neutral", is that equivalent to the off/low position of the throttle?

Permalink Reply by I.S. on December 12, 2011 at 3:44pm

Wht is the field calibration? where can I find info about how to do it?
Thx 

RSS

Social Networking

Top Content 

1 APM Project vs DJI NAZA and WOOKONG

APM Project vs DJI NAZA and WOOKONG
2 APM 2.5 with NEO-6M ublox gps (not 3DR LEA-6)

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

APM Copter 2.9.1.b has been released
4 Flying 3D Spline Curves between Waypoints with ArduCopter 3.0

Flying 3D Spline Curves between Waypoints with ArduCopter 3.0
5 ArduCopter-3.0 ready for wider use

ArduCopter-3.0 ready for wider use
6 10k autonomous flight - telemetry guided flight, and other APM tests!

10k autonomous flight - telemetry guided flight, and other APM tests!
7 Drone shot down by police

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

MAAT final version is being tested
9 Getting ready for Arducopter 3.0

Getting ready for Arducopter 3.0
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