The original flight controllers for home built drones worked quite OK but were very limited in what they could do. No position hold or RTH.
I went to Pixhawk which has virtually unlimited possibilities. I often get up to 23 satellites with the average around 21. The more satellites the more your drone can accurately position itself. I tried 2 GPSs but there was no advantage. I am planning a cross country (3 klm) trip to my buddies place one day when it is dead calm. The flight will be over some State Forest and some empty properties. No houses on route. The drone will land at my buddies and he will switch it off. It takes about 8 minutes by car but about 5 by direct flight. There are some small hills on route so I might use terrain following to avoid them. Still in the planning stages.
Funny story.. One day I sent my drone on a mission and it came back and landed. My buddy wanted to do the same mission so I programmed his drone and sent it off. What I forgot to do was move my drone from the landing spot. It was too late before we realized that when it returned his drone was going to land squarely on top of mine. It chopped off my brand new wifi antenna but otherwise no damage. LOL
I only run 2200 mAh batteries to keep the weight down. I tried larger ones but didn't gain enough time to make it worthwhile due to the extra weight. Therefore my maximum safe range is 2 klm out and 2 klm back. I can set my speed from 5 meters per second to a maximum of 15. I normally run at about 10 meters per sec on the longer trips otherwise I get worried that it's not coming back as it seems to take so long if I set speed any less.
I started using a stop watch which accurately timed my flights so I knew exactly when my drone should reappear.
Another funny story of another drone buddy.
They suspected a neighbour of stealing a car so he decided to send his drone over their place to have a look.
He was using FPV and got a bit disorientated. The drone lost stability and he crashed into the suspects yard near his house. (It had pretty noisy props on it)
He had a couple of attempts to take off making all sorts of noise and sending up dust and of course this attracted said suspect out onto his porch to see what was going on. He was standing there watching with a cup of coffee in his hand. The drone camera was pointing directly at him.
Eventually he managed to get it in the air again and started to fly home. He cleared a wire fence by about an inch or two and started for home. The ground had quite a rise in it so as he flew along the drone was getting closer to the ground and eventually bit the dust. Once again he managed to take off and finally got it home with the funniest video I have seen in a long time.
I only run 2200 mAh batteries to keep the weight down. I tried larger ones but didn't gain enough time to make it worthwhile due to the extra weight. Therefore my maximum safe range is 2 klm out and 2 klm back. I can set my speed from 5 meters per second to a maximum of 15. I normally run at about 10 meters per sec on the longer trips otherwise I get worried that it's not coming back as it seems to take so long if I set speed any less.
I started using a stop watch which accurately timed my flights so I knew exactly when my drone should reappear.
Another funny story of another drone buddy.
They suspected a neighbour of stealing a car so he decided to send his drone over their place to have a look.
He was using FPV and got a bit disorientated. The drone lost stability and he crashed into the suspects yard near his house. (It had pretty noisy props on it)
He had a couple of attempts to take off making all sorts of noise and sending up dust and of course this attracted said suspect out onto his porch to see what was going on. He was standing there watching with a cup of coffee in his hand. The drone camera was pointing directly at him.
Eventually he managed to get it in the air again and started to fly home. He cleared a wire fence by about an inch or two and started for home. The ground had quite a rise in it so as he flew along the drone was getting closer to the ground and eventually bit the dust. Once again he managed to take off and finally got it home with the funniest video I have seen in a long time.
Had he stolen the car? Or is that information which you can't divulge?![]()