Pierre
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why modifications on open source

Started this discussion. Last reply by Pierre Jul 8, 2015. 2 Replies

I’m a hobbyist in Pixhawk. I use Pixhawk auto mode to fly my RC model airplanes quite well. They could follow the flight path very stably and precisely after I carefully tuned the parameters. My…Continue

Question on setting up releasing smoke automatically by Pixhawk

Started Jun 22, 2015 0 Replies

Hi, I use Pixhawk to fly my fixed RC model airplane. Now my aircraft carries a smoke cartridge to release smoke during flight. I would like to set up that the airplane, which is controlled by Pixhawk…Continue

DGPS in APM/Pixhawk

Started this discussion. Last reply by Pierre Feb 10, 2015. 9 Replies

I have used Pixhawk to fly my fixed wings for several months. Now I want to install and use DGPS to it.Has someone here tried to put a DGPS on it? What are the steps to achieve that and what would be…Continue

 

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Latest Activity

Pierre replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"Thanks. I'd like to try DGPS in my autopilot Pixhawk from 3DR. Do you know which DGPS is compatible with Pixhawk?"
Aug 25, 2015
Gustavo Guevara replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"This another future option, just in production: http://www.emlid.com/reach/"
Aug 25, 2015
FerrosonicFPV replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"1 cm accurate GPS http://store.swiftnav.com/"
Aug 24, 2015
FerrosonicFPV replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"Agreed, I was trying to say that the M8N is good for flying but probably not sufficient for mapping. I will send the link soon, my business partner researched that particular unit."
Aug 24, 2015
Pierre replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"1 cm accurate GPS....900 USD Could you provide the link of it?"
Aug 24, 2015
FerrosonicFPV replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"DGPS should become the new standard in my opinion. Hopefully with the growing UAV industry they will be cheaper soon. I dont know why everyone is ok using the low power, singe antenna telemetry to fly their drones, the range and quality just isnt…"
Aug 24, 2015
FerrosonicFPV replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"Ok guys, here is the deal. Not all UAV applications can be performed by 1 kind of drone. Look at this like an engineer, 1) Site the demands of the application, range, payload, flight time, precision 2) Identify methods of meeting the demands…"
Aug 24, 2015
Martin Z replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"The payload is indeed the biggest issue here, I am wondering what's the biggest payload possible, I have managed to get 125kg flying time about 35 min"
Aug 16, 2015
Pierre replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"The drones fly only 2-5 meters above the crops and the there's strong downwash from the rotor. The pesticide won't drift away normally. So for fully automatic flight, the GPS precision will be essential."
Aug 6, 2015
Jose F Moreno replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"with no intention of being negative, just digging into the challenges of this interesting topic: there is one point to consider: drift management. Regardless of the precision of the GPS, who will make the decision of how to manage the drift (of the…"
Aug 6, 2015
Pierre replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"Yes. Pesticide spraying drones can not compete with manned airplane for large farmland. I guess most of the purchasers of the pesticide spraying drones only use them for very small field, or experimental plots.    Let me ask about these…"
Aug 5, 2015
Martin Bellomo replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"I agreed with Jose.The problem is the payload.Check the sprayers market. A 200 liters sprayer is a very small one. I work selling Agricultural equipment and all the clients uses sprayer from 600 to 6000 liters.Tha is the limitation for me, and when…"
Aug 5, 2015
Jose F Moreno replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"talking about the payload. It will all depend on much area you want to spray, which volume of water per unit of area, and how much weight can your drone carry. Make your math and you´ll probably see that you´ll need a large drone to…"
Aug 5, 2015
Pierre replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"I don't get your point. Do you mean the problem is more about c.g. range due to the liquid movement and load? It is a criti this is the same for non/half automatic drone and fully automatic drone."
Aug 4, 2015
Jose F Moreno replied to Pierre's discussion Why not use DGPS for UAV pesticide spraying? in the group Agricultural UAVs
"I believe that more of a problem will be carrying the water (+chemical/s), more than mounting/utilizing a DGPS.  In Japan they use Yamaha´s RMAX for spraying."
Aug 4, 2015
Pierre added a discussion to the group Agricultural UAVs
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Why not use DGPS for UAV pesticide spraying?

Spaying accuracy is one of the most important reasons that the fully automatic drones are not widely used in the pesticide spraying application. The accuracy is mainly constraint by the GPS positioning accuracy. But what about using DGPS (not mean SBAS) in this application? It may cost around 10000 USD but I guess most of the users may be able to afford it. And fully automatic drone with DGPS will be able to spray pesticide more accurately than manually controlled drone.Why DGPS is still not…See More
Aug 4, 2015

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