Difference between revisions of "Nighthawk250"
From Fixme.ch
(→Gallery) |
(→Current setup) |
||
| Line 9: | Line 9: | ||
* FCU: CC3D Atom 4.8-15V 70mA | * FCU: CC3D Atom 4.8-15V 70mA | ||
* Batteries | * Batteries | ||
| − | ** | + | ** 3S 1000mAh 20-30C |
| − | + | ** 3S 1300mAh 35-60C | |
| − | ** | + | |
| − | + | ||
* [http://www.hobbyking.com/hobbyking/store/__65997__Skyzone_Plug_N_Play_FPV_200_Set_With_TS5823_TX_RC832_RX_Sony_CCD_and_Circular_Polarized_Antennas.html FPV] | * [http://www.hobbyking.com/hobbyking/store/__65997__Skyzone_Plug_N_Play_FPV_200_Set_With_TS5823_TX_RC832_RX_Sony_CCD_and_Circular_Polarized_Antennas.html FPV] | ||
** FPV Camera: 1/3 Sony CCD 7-13V (3S) current 70mA | ** FPV Camera: 1/3 Sony CCD 7-13V (3S) current 70mA | ||
Revision as of 13:57, 3 August 2015
- Building a FPV Drone
Contents
Current setup
- Power calculator
- Frame: HobbyKing Spec Class 250fpv
- Motor: 4.4A max, 2-3s lipo, max 49W
- ESC: Afro 12A SimonK (2-4s lipo), BEC: 0.5A Linear 5.0v
- Props: Gemfan 5030
- FCU: CC3D Atom 4.8-15V 70mA
- Batteries
- 3S 1000mAh 20-30C
- 3S 1300mAh 35-60C
- FPV
- FPV Camera: 1/3 Sony CCD 7-13V (3S) current 70mA
- FPV Transmitter: 7-24V 190mA manual -> FR1 CH8
- Video Receiver: current 12V 200mA
- Video "goggles"
- Weight:
- Theorical weight: ~415g
- Calculated weight: 560g
Upgrade planning
- More powerfull motors !
- better frame
- expensive 150$ http://www.minihquad.com/frames/blackout-mini-h-quad/
- cheap 20$-40$
- Better FPV antennas, stock are shitty with Skyzone kit (according to comments on HK)
Assembly
Frame
- Basic assembly guide: https://www.youtube.com/watch?v=r8ALzUluyXM
- An other assembly guide: http://www.cardella.tk/2014/09/fpv250-quadcopter-build.html
Configure FCU: CC3D Atom
- Install OpenPilot GCS (install of openpilot fails but openpilotgcs is working) https://wiki.openpilot.org/display/WIKI/Downloading+and+Installing+the+Ground+Control+Station
- Hardware setup: https://wiki.openpilot.org/display/WIKI/CopterControl+-+CC3D+-+Atom+Hardware+Setup
- Full introduction to building a quad with the CC3D https://www.youtube.com/playlist?list=PLYsWjANuAm4r-E61stLchCR4bzY3NmDNh
Batteries
- https://www.reddit.com/r/Multicopter/wiki/power
- LiPo are dangerous! https://www.youtube.com/watch?v=YCWdnjLqVWw
- C rating : the higher, the higher current you can draw http://www.rcheliwiki.com/C_rating
- C*Capacity in Ah=Current
- Current: 20C * 2.2Ah = 44A
- Power: 44A * 11.1V = 488.4W
- S is the number of cells in series, and is representing the tension (1S=3.7V, 2S=7.4, 3S=11.1V, ...). P is in parallel. Usually LiPo are in series and P=1
- Balancing: Cells need to be a the same charge level so we can avoid overcharging.
- It's a good idea to always use the balance mode to charge a multiple cells battery
- http://www.rcheliwiki.com/Balance_charger
- Use the charger to check and rebalance cells https://www.youtube.com/watch?v=AChoy_PsVEg
- A good trick to test is to charge the cells individually using the balance cable, it's much faster than the balance mode that needs to discharge overcharged cells a lot
Transmission
-
Having some problems with the vTX right now, apparently at full throttle. Electrical perturbations ?Good, got some new antennas
Gallery
- 1st flight https://www.youtube.com/watch?v=RCSfAMZ6bm0
- FPV Camera setup https://www.youtube.com/watch?v=aNmkK1-EYYc
cabling is hard
1st build
fpv tests
stats
rebuilt everything, better antenna placement, battery cables, fix the feet, ...
Broken an arm trying to roll
Arm fixed using epoxy, flying well, we'll see if it handles vibrations and the next crash
