Proper newbie here. Late to the party but catching on fast and have learned a lot in here. Thanks.
Location roughly -27.40088, 152.93449. That’ll get you to the local train station.
Short story long - Covid kicks in and I got a bit board so assembled a couple of guitars from DIY kits - switching out provided terrible parts with some premium pots and switches etc as we go and they turned out OK. Thats a whole-nother web page. So looking for the next thing to do …
… got a bit of form in the photogrammetry game as a GIS operator in a consultancy but never have captured the imagery myself - always inherited someone elses mistakes. So decided to apply the success from the new quiver of guitars and make a photogrammetry beast out of a Tarot 650 Sport. Went ahead and picked up a few bits and pieces online from the usual places and read a few docs here and among things they mention maybe don’t try a 650 sport as a first up build. Awesome. Nothing quite like having an instinct for trouble. If thats not validation then I dont know what is.
Anyway - it’s been a few months reading and gathering parts. Got to say the power distribution on the board of the 650S is a bit of a cruel joke so have avoided that and done it a bit differently. My soldering skills are fair to pretty good but not up to what is required there. Read a few more things and what was supposed to be a bit of fun has gotten quite serious. Maybe thats what was implied by dont try the 650S first?
Couple Details I can think of …
Current kit …
Pixhawk 2.4.8 knock off
Bog Standard M8N
4008 330 Motors
15.5 folding props + a spare set (plastic jobs for trial and error - then we move to carbon)
Hobbywing X Rotor 40A
Taranis X9D Plus
ARRIS 2 axis and Sony Nex5
Tarot 3 axis and MAPIR (NIR + cyan + orange)
Question here … can Mission Planner deal with two working camera and gimbals? Dont necessarily want to control them fromthe ground - need them pointing downwards and flat and firing often.
Wanted kit …
Massive arms though (flex warning) mine are not too bad right now
Massive carbon props
16000mAH 6S (or somethign stupid large)
Lightware SF45 (face towards the ground for some LiDAR sweep scanning)
Apologies if I got terminology or acronyms wrong. Dont really get hung up on that stuff.
Being a GIS analyst during the day and a proper GPS nerd - already built up an RTK solution M8P GPS base and rover. The base station feeds into Mission Planner nicely. The Rover though is not exactly air portable - it’s a pole mount job with a high gain but will be using that to capture ground control targets to tie down the scan.
Thought better since above about the stretched arms and decided if I can get the not from the Minister for War and Finance then I’ll keep this one to belt around the park and make a 960 next. Still a Quad though - dont see the point of Hex ot Oct - if 4 can drag the payload then 6 or 8 will just suck the battery down harder? Thoughts here would be good.
Anyway - First flight was fairly short. Lasted all of about 3 seconds and rolled over. It was a bit like a dud shag. Turns out I need to follow the Mission Planner doc for the motor pattern for plugging into the Autopilot rather than reading the 650S board. Props seem to take the hit into the dirt OK. Lesson learned.
Gave it a day and switched out the ESC plugs and went again. Confidence was up but tethered it to the ground this time just in case. Lift off successful. Got it hovering - was nose a little up and heading backwards but put it straight down and high fived myself. Now to learn to log the data and read the output.
After all that - here’s the question … calibration of the ESC’s?
Do the Hobbywing X Rotor 40A jobs need calibrating?
The limited documentation I’ve found is leaning me towards yes. I’ve tried to follow the 4 motor calibration all together at once routine and listened out for the beeps. But I’m not sure it was actually done. The X Rotors send out the steady beeping while the thing is disarmed and its tough to pik the more subtle calibration beeps under it. I tried the one at a time calibration in the CH3 port on the RX8R but similarly not sure that has worked. Might go through the full set up again to be sure.
Got to survive a family wedding this weekend first though. It’s going to be a horror show. Give me strength.
Cheers … R