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I am using FW 5.20..... Worked with RC remote gain specific to YAW tuning with no noticeable improvement. Will try replacing the GPS support shaft from the medium to the highest/longest to see what happens. It seems as if the concept of dead reckoning is not fully applied with respect to YAW...

Love that video.....but the pilot has it backwards......... Quad lifts helmet...... Pilot wears Styrofoam cinder block!!!!!

I investigated the WKM tendency to YAW further today by swapping the port and starboard motors and replacing two props then flew in a light crosswind coming in from the port side. ..... Results remain identical in that the Hex tends to YAW ccw. So I adjusted the RC TX yaw trim 8 points to the...

Here is an iOSD flight datagraph download of the port and starboard motors on my HEX. I was test flying it in a crosswind late today with the wind coming in from the port side. Most of the motors show rpms that are closely aligned. But I noticed a lot of variance in the rpms between the port and...

The yaw issue is mentioned in DJI's FAQ section and here is what they have to say about that! Totally useless information......

I had a similar problem with a custom designed 800mm Hex....... finally I upgraded the motors to more powerful 420KV Turnigy Multistar 22pole with 15 x 5.5 carbon fiber props and all wobbles disappeared for totally smooth flights.However I have noticed a bit of random yaw into the...

So far....my iOSD MK2 does not show any significant discrepancies between motor currents/voltages during these flights. COG is at MR airframe dead center on the horizontal axes. CCW yaw rotation occurs when the wind is coming in from the left or port side. Need to check now to see if the yaw...

These are designed to work with the new carbon fiber paddle props but I can't seem to purchase them (or equivalent) without buying the T-Motors.....

My 800mm Hex flies straight and true in still air in GPS and Attitude mode using the WooKong M. But when there is a slight breeze, it seems to yaw quite a bit without RC stick input. Is this normal? Seems my WKM on a previous F550 did not do this... Will yaw gain adjustment help? I need to make...

Here is a video which shows how unexpected yaw has occurred during forward flight.....You will see sudden yaw corrections at various points and will notice the direction of the wind when my MR approaches the flag on the green. This is a 500 yard fairway that doglegs to the right. It is also in a...

My MR which is 800mm Hex c/w WooKong GPS firmware 5.20 has a similar issue. It will fly forward in a straight line in GPS or Attitude mode.... but when there is a breeze, especially from the side, it tends to yaw and then needs constant correction during forward flight. This is a problem when...

The Youtube video message is "this video has content from EMI" which is blocked in this country.......

You need a minimum of 35C IMHO...... Electrochemistry in your battery must keep up with MR torque requirements or the voltage will suddenly drop leading the controller to respond according to your RTH and low voltage settings. In some cases, where the voltage drops into the controller processor...

Monitoring MR battery voltage level via FPV is the preferred method over a flashing level 1 LED on the MR. The DJI volt protection provision is a crude method subject to error for a variety of reasons. An iOSD onboard can also record individual motor performance volt/current data to analyse...

Sorry to hear about the crash... Can you provide additional details leading up to the crash.. did the MR remain level on the way down? Did the MR fail to respond to RC Tx controls? Did it hit sod, pavement, or concrete etc. ESCs tend to get damaged when trying to turn a locked motor not from...

The tiewrap method never worked well for me. I had to use small pieces of aluminum tape, relocating it 180 initially, then 90 degrees etc. Once I found the correct spot it was a matter of sizing the aluminum tape to fine tune the balance. Black electricians tape will not remain on for long...

Would this cause any kind of instability? ECalc won't be able to assess that. But I built a custom 800mm Hex awhile ago and the 1st set of motors spinning 14 inch props were a bit undersized...... Why? Because the WooKong controller Basic and Attitude tuning parameters could not be optimized to...

A 2 axis servo gimbal system taps in to the existing Naza or WooKong IMU for MR attitude and only requires camera angle feedback by means of simple "brushed" rotary potentiometers inside of the servos...... Since the brushless camera gimbal motors have no pot position feedback, there is a need...

I have both the Alexmos - user ready for MS OS PCs as well as the Martinez which is an Arduino based open source project and therefore less expensive. The BGC board for Alexmos seems to be designed to handle larger brushless motors for larger cameras. The Martinez works best with smallest...

After carefully balancing my props I use the IPhone application called iseisomometer to balance all motors as much as possible. But I have also found that the Naza controller can still act up from time to time especially when the MR is modified to use larger and more powerful motors....... so as...