Difference between revisions of "Nighthawk250"

Revision as of 11:21, 24 July 2015

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
- 11.1V 3S 1800mAh 20C
- 11.1V 3S 1000mAh 20C
- 11.1V 3S 2200mAh 30C
- 14.8V 4S 1800mAh 25C (non usable with these motors)
FPV
- FPV Camera: 1/3 Sony CCD 7-13V (3S) current 70mA
- FPV Transmitter: 7-24V 190mA
- Video Receiver: current 12V 200mA
Video "goggles"
Weight:
- Theorical weight: ~415g
- Calculated weight: 560g

More powerfull motors ! 18g 88.8W http://fpvracing.ch/en/motors/62-emax-mt1806-2280kv-cw.html
next frame ;) http://www.minihquad.com/frames/blackout-mini-h-quad/
Better FPV antennas, stock are shitty with Skyzone kit (according to comments on HK)

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

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