Melvin
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Melvin's Discussions

Difference between MP radius field and copter's WPNAV_Radius

Started Dec 24, 2017 0 Replies

Mission planner radius field is in the meters range while copter's is in cm. Im very unsure as to which waypoint radius parameter is being used? MP's or copter's?Continue

Tags: copter, Dronekit, pixhawk, Ardupilot, planner

DO_CHANGE_SPEED Question

Started Dec 21, 2017 0 Replies

Hi everyone I got a couple of question regarding this command 1)Is the speed specified in the command set for the whole mission, or just before reaching the waypoint and afterwards the drone changes…Continue

Tags: planner, APM, arducopter, mission, pixhawk

WAYPOINT REACHED

Started this discussion. Last reply by Melvin Sep 12, 2017. 13 Replies

The question has been asked before a long time ago but i havn't heard anything of it ever since. Is it possible to find out if a waypoint has been reached? Does dronekit implement this mavlink…Continue

Accessing Waypoints directly from pixhawk

Started this discussion. Last reply by Melvin May 15, 2017. 6 Replies

Hi everyone,Im currently writing a program that compares the drone's current location coordinates with the waypoints coordinates so once they match a script is executed. My question is how do i…Continue

 

Melvin's Page

Latest Activity

Melvin posted a discussion

Difference between MP radius field and copter's WPNAV_Radius

Mission planner radius field is in the meters range while copter's is in cm. Im very unsure as to which waypoint radius parameter is being used? MP's or copter's?See More
Dec 24, 2017
Melvin posted a discussion

DO_CHANGE_SPEED Question

Hi everyone I got a couple of question regarding this command 1)Is the speed specified in the command set for the whole mission, or just before reaching the waypoint and afterwards the drone changes to the speed prior to the command? 2)This question isn't much regarding the command, but once the drone is reaching the waypoint(with delay) at what rate does the drone decelerate? Can I change that rate? Does the pixhawk change the rate automatically depending on the current speed? 3) In…See More
Dec 21, 2017
Melvin replied to Melvin's discussion WAYPOINT REACHED
"That worked?? I never tried that command since according to the API it doesn't stop the vehicle."
Sep 12, 2017
Evidlo replied to Melvin's discussion WAYPOINT REACHED
"I figured this one out too.  Just use MAV_CMD_CONDITION_DELAY to add delay commands after each waypoint."
Sep 11, 2017
Evidlo replied to Melvin's discussion WAYPOINT REACHED
"I think the vehicle should come to a complete stop so long as the delay is nonzero.  Not sure what the minimum is though."
Sep 8, 2017
Melvin replied to Melvin's discussion WAYPOINT REACHED
"Yea, but i noticed that the "MISSION_ITEM_REACHED" message is thrown after the delay(atleast its like that in the simulation) and i need something to tell me when it has reached it at that exact moment. So im thinking of switchin to Loiter…"
Sep 8, 2017
Evidlo replied to Melvin's discussion WAYPOINT REACHED
"Ah, nevermind.  The first argument to MAV_CMD_NAV_WAYPOINT is the hold time."
Sep 7, 2017
Evidlo replied to Melvin's discussion WAYPOINT REACHED
"Out of curiosity, how are you getting the quadcopter to stop at each waypoint?"
Sep 7, 2017
Melvin replied to Melvin's discussion WAYPOINT REACHED
"Great find Evan, works like a charm."
Sep 4, 2017
Evidlo replied to Melvin's discussion WAYPOINT REACHED
"I figured out how to do this with observers the other day.     @vehicle.on_message('MISSION_ITEM_REACHED')    def on_waypoint(self, name, message):        print "Just reach item…"
Sep 4, 2017
Javier Cerna replied to Melvin's discussion WAYPOINT REACHED
"Hi Melvin, You can send commands in an Auto mission by using the camera commands: http://ardupilot.org/copter/docs/common-camera-control-and-auto-missions-in-mission-planner.html#camera-commands Particularly, you should…"
Jul 10, 2017
Melvin replied to Melvin's discussion WAYPOINT REACHED
"Adding an observer/listener didnt work but your first idea did, thank you very much! I got one more question, could you point me to somewhere regarding camera control via dronekit if possible? I read something about gimbal control but nothing around…"
Jul 10, 2017
Javier Cerna replied to Melvin's discussion WAYPOINT REACHED
"Hi Melvin, Check this guide and the source code in the bottom of that page. There is some code to execute some actions based on the waypoint the drone is currently heading to. You could store the next_waypoint in a variable and as soon as…"
Jul 10, 2017
Melvin replied to Melvin's discussion WAYPOINT REACHED
"Hi Javier, As it did help quite a lot in part, see im trying to make the drone stop at the waypoint so it can execute a script from its computer companion. In order to do that in code i need something to tell me it reached it so it can execute.…"
Jul 9, 2017
Javier Cerna replied to Melvin's discussion WAYPOINT REACHED
"You could add a delay of 3 to 5 s in the command: http://python.dronekit.io/automodule.html#dronekit.Command Hope it helps! Javier"
Jul 9, 2017
Melvin posted a discussion

WAYPOINT REACHED

The question has been asked before a long time ago but i havn't heard anything of it ever since. Is it possible to find out if a waypoint has been reached? Does dronekit implement this mavlink message? I'm programming a drone to stop for a few seconds once the waypoint is reached and havn't found a way to do so.
Jul 7, 2017

Profile Information

Please tell us a bit about your UAV interest
Currently designing a program that compares the waypoints of the drone to a list of specific coordinates, so that when they match, an app, or script, is triggered.
Hometown:
Puerto Rico

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