I've built a Tricopter. The radio is calibrated in Mission Planner, the Esc's are calibrated. Prop configuration, right prop, (Pusher) ran clockwise, the left prop and tail prop (Regular) turned counter clockwise. No luck? I tried all different prop configurations nothing worked? Anybody have any ideas what is causing the Tricopter to spin?

Views: 4265

Reply to This

Replies to This Discussion

Oh! I had different settings before Flight Mode beside just Stabilized , Acro, RTL. etc. But nothing shows when I check in Failsafe? 

Moving the control sticks and toggle switches on the transmitter to their limits of travel and observe the results on the radio calibration bars. Red lines will appear across the calibration bars to indicate maximum and minimum values. Move the Ch 5 and 6 toggle switches through their range of positions (Ch 7 and 8 are not used for basic operations).


The transmitter should cause the following control changes:
Channel 1: low = roll left, high = roll right.
Channel 2: low = pitch forward, high=pitch back.
Channel 3: low = throttle down (off), high = throttle up.
Channel 4: low = yaw left, high = yaw right.

(Channel 4 does nothing? No changes when I move the switches.)

Moving Ch 5 and 6 toggle switches through their range of positions, nothing happens?

The APM may not be bad after all? (The radio wasn't programmed correctly.) I'll know in a while if I got this right?

Hi Joe,

Thats great news, I was wondering if the APM was getting the right settings from the Radio.

Once it's sending correctly, just check in the radio calibration screen that the stick that moves is moving the right item on the screen.

Good luck with it all.

Regards,

Chris

Hi Chris,

The radio wasn't active, it needed to be programmed. Went into Mix to set the parameters/switches. (Still have a glitch though.) Can't toggle through all Flight Modes, supposed to be able to toggle between all 6 Flight Modes, but right now, can only toggle between 2 of them. Also can't arm the APM. Going to have trace the settings to find out what's wrong...

Alright! I have the radio programmed and can toggle through all the "Flight Modes". *Arm the APM.* But the rudder servo on "Output 7" is not working? There is power going to it, because it twitches when the APM is 1st armed. But as far as getting to move on command from the radio it does nothing?

Hi Joe,

so when your Tricopter is 'disarmed', the green bars for Radio IN 1,2,3,4 move according to your stick moves and toggle switch changes Radio IN 5 and displays the desired flight mode ?

When you arm it, Radio IN as above and Radio OUT 1,2,4 move ?

When in Stabilize and rolling to left, the left motor speeds up and the right motor slows down and vice versa ?

When in Stabilize and nose down the front motors speeds up and the rear motor slows down and vice versa ?

Only yaw servo doesn't work ? Maybe you should look in Config/Tuning at RC7_Function.

Watch out to check correction direction/motor speed for manual input AND in stabilize. Manual is usually corrected with TX servo reverse and Stabilze with APM i.e. RC7_REV.

Hi Ultrafuge,

Even though the Green bars respond to the stick movements in Mission Planner. When the Trocpter is armed the motors just throttle up and down. There is no variable speed in them?

Attachments:

I forgot to add that the servo plugged into "Output pin 7" doesn't do anything either. Just twitches when power is 1st put to the APM.

Hi Joe,

please follow the instructions of the wiki.

http://copter.ardupilot.com/wiki/connecting-your-rc-input-and-motors/

You must have a correct setup in Radio IN:

#1: Radio IN 1 must move when you move your roll/aileron stick on the TX.

#2: Radio IN 2 must move when you move your pitch/elevator stick on the TX.

#3: Radio IN 3 must move when you move your throttle stick on the TX.

#4: Radio IN 4 must move when you move your yaw/rudder stick on the TX.

#5: Radio IN 5 must move when you operate your mode toggle switch on the TX and the selected mode name must be displayed.

NO other bar must move when you operate #1 - #5. As long as you are Disarmed, Servo/Motor OUT will not move. When you are Armed, Servo/Motor OUT 1,2 and 4 will move.

Your pictures say and show you try to use channel 6 instead of 5 for the modes.

Picture 3 says, that right AND left stick move Radio IN 2 -- for sure wrong, as only pitch/elevator should move Radio IN 2.

Picture 3 says, that left stick moves Radio IN 1 -- for sure wrong, because aileron is on right stick in Mode 1.

Please set up a new aeroplane model in your TX without any mixing and other special effects. You can use the 3-position-switch to select between 3 modes if you don't need 6 modes. Make sure you get the points #1 - #5 working as supposed, because unless the basics are correct nothing will work !

Hi Ultrafuge,

Okay – Pins 1, 2,3,4,5 that are coming out of the receiver module on the Tricopter, are connected to Pins 1, 2,3,4,5 on the Input side of the APM/ARDUCOPTER.

On the Output side - Pins 1, 2, 4, are connected to the 3 ESC’s, Pin 7 is connected to the  Yaw/Rudder servo.

The Radio Calibration setup in MP: When I move the *right stick* Up or Down -Throttle and Radio 5 respond. And by moving the *right stick* left or right Yaw responds, and up and down *Pitch* responds.

Now in FailSafe – Radio 2, 4 respond by moving the right stick which is the *Throttle* on the TX. And by moving the right stick - either right or left - Radio in responds.

The left stick when moved up or down Radio 1 responds. And by moving the stick right or left Radio 4 responds.

The mode used to calibrate the APM on the Tricopter was ACRO/AIRPLANE. (Not Heli).

And thanks for the assist...

Joe

Hi Joe,

the good news:

The mode used to calibrate the APM on the Tricopter was ACRO/AIRPLANE. (Not Heli).

On the Output side - Pins 1, 2, 4, are connected to the 3 ESC’s, Pin 7 is connected to the  Yaw/Rudder servo.

These settings are correct.

The bad news:

The Radio Calibration setup in MP: When I move the *right stick* Up or Down -Throttle and Radio 5 respond. And by moving the *right stick* left or right Yaw responds, and up and down *Pitch* responds.

I guess you wanted to say:

The Radio Calibration setup in MP: When I move the *right stick* Up or Down -Throttle and Radio 5 respond and for left or right -  aileron responds.

And by moving the *left stick* left or right Yaw responds, and up and down *Pitch* responds.

On the Failsafe there is the left column for the 'Radio IN' signals(bars) and the right column for the 'Servo/Motor OUT' signals(bars). The number of the bar is written under the bar (i.e. first left green bar is therefore Radio 1 not Radio IN). With this in mind you say:

Now in FailSafe – Radio (2) 3, (4) 5 respond by moving the right stick which is the *Throttle* on the TX. And by moving the right stick - either right or left - Radio (in) 1 responds.

The left stick when moved up or down Radio (1) 2 responds. And by moving the stick right or left Radio 4 responds.

Just to make sure I understand you:

You want to fly in Mode 1, so your left stick is yaw(rudder) for left/right and pitch(elevator) for up/down and your right stick is roll(aileron) for left/right and throttle for up/down.

In this case you have a RC problem, because throttle is on Radio 3 AND Radio 5.

You can verify this by putting a servo on RX channel 3 and RX channel 5 - do not connect the APM. If you throttle up and down and both servos move, you have to find the mistake in your RC.

As soon as you have a clean channel 3 (= no channel 5) response for throttle you should setup the mode switch for channel 5 and verify it in 'Failsafe'. Usually the fastest way to a clean output is creating a new model.

Reply to Discussion

RSS

© 2019   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service