Flat sequence structure

[John1982]

Hello, I have created a flat sequence structure but it doesnt run as intended can anyone give me some advise? Ty 🙂

Intention: fly to a certain height for 2000ms > rotate anticlock wise for 2000ms > rotate clock wise for 2000ms > land slowly.

1st and last part works fine except for the middle ones. i tested the middle ones without sequence and they are working..

[GerdW]

Hi John,

what do you expect us to explain for such a VI:

???

- All subVIs are missing.

- Even an error description is missing! (Saying "doesnt run as intended" is not considered a valuable error description...)

- The timings in the sequence doesn't fit to your intention...

Btw. in your other thread you have been told to use a state machine architecture instead of (flat) sequences. Why not adopt that suggestion?

[John1982]

Hello. Weird I did attach the sub VIs.. mmm let me try reattach. 

I did not adopted State machne instead because I am new to Labview and find it much harder to understand. Whereas flat sequence structure seems smpler. 

[GerdW]

Hi John,

again only one (main) VI...

See edited comment above!

You could have sticked with your original thread instead of posting a copy of your VI in a new one...

Edited:

- Drawing a state chart on a sheet of paper will help to understand that approach. Drawing on a sheet of paper will help to understand all programming tasks and should be the recommended way before starting to code...

- Flat sequences might be simpler, but surely will not help you in cleaning up your code...

[John1982]

Okay now I am confused. All the Sub VIs is on my com, and I don't know why when i attach it, it went missing.. hmmm any idea? Oh man..

[GerdW]

Hi John,

did you attach all of those subVIs in the message editor? ALL OF THEM?

[John1982]

Sub1 & sub 2 controls the anticlockwise or clockwise movement of AR drone.

Sub 3 is level AR drone.
Sub 4 is descend/landing of AR drone

[John1982]

Here is sub 4

open and close vi

Sorry there buddy, am too new to Labview hence I did not know it was neccessary to attach the Sub VIs. I have attached all of them already. 🙂

[John1982]

Omg I am so sorry. I have compiled all the files into a Zip. Please download this one instead. Sorry 😞

[GerdW]

Hi John,

you use all those timing functions in parallel. What will be the result of them?

You put a 9s-wait in the sequence frame, call a subVI parallel to the wait and in the subVI you have another 500ms-wait in parallel. In your question you wrote "I want to wait for 2000ms". I don't see any of your intended timings in the code...