It’s turned out heavier than I’d hoped, but I’m doing hover testing now.
My main concern is that while set up in QLoiter or even QHover, the throttle response is so slow that I’m afraid it would fly away! I push up the throttle and it has a delay, but when it kicks in (and I’m holding it down so I don’t crash it), it takes a second or two after I put the throttle back down for the motors to stop trying to lift the thing.
I push up on the throttle, in a second the motors spin up, and I push down, and it takes what seems like forever for them to stop the thrust.
I feel like there’s some setting I’m missing. Does anyone have any ideas here? I don’t want to let this thing go when I can’t control the height!
I was hoping to try a completely manual mode, but “Manual” doesn’t seem to be a valid mode?
I’ve tried to fly this thing, and it’s not good. It was in autonomous mode, programmed to rise 10’, hover, and Qland.
It rose up, but didn’t stabilize, so it drifted backwards fast enough to hit a fence and crash! I’m very surprised that this didn’t adjust and stabilize with GPS or at least the accelerometer.
Now I’m going to have to print a lot of new parts. Argghh!
Thanks for your reply! I need to get this figure out badly.
3 kg? That’s amazing. We had trouble printing it, so we had to go to something like 7% infill, so it’s very heavy, and I’m using a CubeOrange, so that’s heavier.
We’re about 5.5kg! It’s a heavyweight for sure, so much so that we had to go to a 6S battery to get it to lift off. At 4S it would almost hover with the 3510 motors we’re using, but not quite. I think we’re using the recommended stuff from the Titan website, but obviously heavier than ideal.
I’m not near the aircraft right now, so I’ll have to look that up when I get there, but I’m not hovering at half stick, and that’s partially due to the fact that I’m using a Herelink controller (with video and telemetry). The Herelink stick springs to half stick and can’t be unsprung, so half stick is like zero stick. I’m tempted to open that thing up and remove the spring so I can use more of the travel.
It seems to be sensitive to the center of gravity. We’ve centered it to the front 1/3 of the wing as the instructions say, but if it’s off it seems to drift freely without correcting itself with GPS or the accelerometer inputs so I guess we’re fighting 2 possibly unrelated issues, this and the throttle response.
I’ve built one quadcopter (an S500) and tuned it, but otherwise I’m kind of a newbie.
5.5kg is way too heavy. Mine was printed with ABS so it’s already heavier than recommended LWPLA, but I print with single wall and 3% infill to achieve 3KG. I use 6s-5000 battery at 3.7KG and it still flies with authority. Not sure if power to weight ratio is the cause of your throttle delay, but in theory it could.
you probably want to enable Q_M_HOVER_LEARN=2 and hover a bit. It will learn your hover throttle and set Q_MOT_THST_HOVER automatically so you will hover at closer to mid stick.