Re: New Phantom does not 'take-off' from ground at full thro
Guys, thanks for responding to my SOS with your advises.
netphreak See Part 2 of the YouTube link below. I confirm that all the sticks are able to range from -1000 to +1000.
thetac I agree with you in that it is NOT full power! I don't have a multimeter BUT my LiPo battery is the stock Phantom battery i.e. 11.1v. The battery is fully charged as confirmed by my EOS Sentry.
As, you're being very observant. Yes. I did notice the sudden surge in throttle when I bring the Pitch joystick down in combination with throttle joystick down to zero (execute CSC for shutdown). Question, how do I check to see how the sticks are assigned? Again, please check my Part 2 video to confirm your suspicion and let me know.
Netwarrior It is properly aligned.
miskatonic I pushed my throttle up for more than 3 secs. In fact, pushing it there longer does not change the outcome. I have applied the "Phantom Default Configuration Parameters" as downloaded and nothing changed. I have applied it twice.
Part 2 - Checking TX and IMU calibration using Naza Assistant Software.
http://youtu.be/0tW7z4gy5Io
SOME ADDITIONAL OBSERVATIONS
I noticed that when I switch on the TX (GPS ATTI. mode) and then plug in the LiPo to the Phantom, the position of the TX's Throttle makes a BIG DIFFERENCE. (I see the same problem with ATTI. mode as well)
If I were to switch on the TX and have the Throttle set at minimum (pushed to bottom; it does not matter whether I had the throttle set at centre or bottom/low before I switch on the TX. as long as I have the throttle at bottom/low when I connect the LiPo to the Phantom), I will get the following observations:
a. The sequence of the LED lights are as follows ... all 4 lights under the props (2 reds and 2 greens) blinks simultaneously twice.... main LED will blink in sequence red, green, yellow, red, green, yellow, green, green, green, green... then a very fast burst of red x 4times (which is repeated).
b. I then connect it to Naza Assistance s/w. I get the ERROR[29] message below. I immediately notice that the "E"/throttle is very close to "0", even when I have the throttle stick unchanged at the bottom. When I move the throttle slowly up, it starts to move to from 0 to 1000 and by the time I reach the centre on my throttle stick, it max out at 1000 for the remaining top 1/2 of the throttle stick movement.
ERROR[29]
Motors Start failure caused by TX stick(s) mid point error too big
If the TX stick(s) mid point error is too big, Motors Start will fail when you execute the Combination Stick Commands (CSC) and lead to the aircraft will not takeoff.. And the LED will blink Red four times per second continually to warn you.
TX stick(s) mid point error too big can be caused by the following reasons:
(1) There is TX stick (except the throttle stick) not at center when power on the autopilot system.
(2) The TX sticks has been trimmed, which leads to the large deviation of mid point. For example, the SUB-TRIM has been adjusted for Futaba transmitter.
(3) The TX stick(s) travel has larger asymmetry.
For the reason (1), please put all TX sticks at the mid point, and then power cycle the autopilot system to re-record the mid point. If the problem continues, that can be caused by the reason (2) or reason (3), you need to adjust the output range of your TX, and then use the Assistant Software to redo the TX calibration. Please carry out the following procedures.
(1) Connect to the Assistant software, click Basic-> R/C-> Command Sticks Calibration, and push all TX sticks throughout their complete travel range to see if any stick cannot reach its largest position.
(2) Adjust the largest travel of TX stick until the cursor on the Assistant software can reach both end positions, according to your TX manual.
(3) Power cycle the autopilot system, note that power cycle is required.
(4) Redo the TX calibration according to the Assistant software.
When I unplug it from Assistant Software, I am not able to activate the motors of the Phantom by executing CSC as confirmed in the message above.
If I were to put throttle at centre, switch on TX, connect LiPo to Phantom, I get the following observations:
a. The sequence of the LED lights are as follows ... all 4 lights under the props (2 reds and 2 greens) blinks simultaneously twice.... main LED will blink in sequence red, green, yellow, red, green, yellow, green, green, green, green... then a repeated sequence of fast green-green then fast red-red-red <repeat.. I think the fast green-green is confirmation that I am on GPS mode (if I switch to ATTI, it is replaced by yellow-yellow instead). Similarly, I think the fast red-red-red is because I'm operating indoors and there is no GPS connection.
When I connect to the Naza A.Software, the "E"/Throttle is now normal i.e. it is able to swing to -1000 when I push throttle down, 0 when I have it centred, and +1000 when I push it up. I take it that this is correct.
My question.... Is this normal? when I watch the DJI tutorial, they repeated remind us to set throttle all the way down before connecting LiPo to Phantom. Instead, based on the above two observations, I need to set the throttle to centre otherwise I get the "
Motors Start failure caused by TX stick(s) mid point error too big" error hence I can't start the Phantom.
Hope this sheds some more light to help you guys figure out what's wrong with my setup.
Thanks in advance.
