Archive for 'RC' Category
Testing the Low Pass Filter
Testing the Foxtechfpv 1.4GHz Low Pass Filter http://www.foxtechfpv.com/1400mhz-low-pass-filter-p-439.html The aim of this experiment was to quantify the signal attenuation of the low pass filter across various frequecies. Ideally I would have produced a frequency response plot of the LPF from 0 to 3GHz but due to limitations with the equipment, I could only test in [...]
1.3GHz Low Pass Filter – The Case For
Today I flew the PVC quad on another shakedown flight (after fiddling with the configuration via the GCS). I was flying over a fairly large oval, not very high but on the far side from where I was sitting when all motors lost power. I believe failsafe on my Futaba kicked in. You can [...]
Cutting the shaft on the NTM Prop Drive 28-26 1350KV / 310W
For the PVC 'BattleQuad' I'm building I ordered four 'NTM Prop Drive 28-26 1350KV / 310W' motors as I've used them before on a Hex 550 build and am quite happy with them. These motors are a little different in that you have to buy a seperate accessories pack to get a mount for the [...]
PVC Quad build
PVC Quad, a set on Flickr. The PVC quad was inspired by HelliYea's Battlequad post over on the Openpilot forums (http://forums.openpilot.org/topic/13503-battlequad/page__hl__%20battlequad). I've seen it fly (and crash) and it shows great flight capability along with rugged frame construction. The 15mm PVC pipe is straight from the local hardware store. RCTimer motors, KK2.0 flight controller and [...]
Quadcopter Parts List
I was asked recently what would be a good way to start in multirotors. The first question was "A tri-copter must be simpler and easier because there's only 3 motors?". I disagree. I've built quite a few tricopters and on each one explored a different way of building the yaw control mechanism on the tail [...]
Imitation DJI F550 build
Parts used in this build; H550 V2 Glass Fiber Hexcopter Frame 550mm – Integrated PCB Version 9 Mode Multi Colour/Multi Function LED strip with Control Unit Hobbyking KK2.0 Multi-rotor LCD Flight Control Board NTM Prop Drive Series 28-26A 1200kv / 250w NTM Prop Drive 28 Series Accessory Pack TURNIGY Plush 30amp Speed Controller Slow Fly [...]
Flips & Rolls with the Naza F450 Quad
This video shows my first loops and rolls with the DJI Naza F450 Quad. I did at least one in every direction (left, right, forwards and backwards). The entire flight was flown via FPV which I found much easier for these moves. Flying line of sight at this height and distance makes it hard to [...]
New GoPro Mount for the DJI F450 Quad
I used the DJI F450 Quad and GoPro v1 to take some photos of a house under construction but found with the GoPro mounted flat on the front tab of the frame, most of the photos were angled too high and showed plenty of the roof of the house but not much more. Also the [...]
4S 5000mAh on the Naza Quad
I threw the 4S 5000mAh battery on the DJI Naza F450 Flamewheel quad. I expected the battery might be a bit too heavy weighing in at 530gr plus the weight of the GoPro camera plus EagleTree Logger, EagleTree GPS and the DJI GPS, the Flamewheel has put on a bit of weight since it's maiden [...]
DJI Naza Voltage Protection Levels
This is how I've set my first and second level protection voltage thresholds. I found the default setting with 14.8 Volts in the 'No Load' without any value in the 'Loss' field meant the Second Level Protection kicked in far too early and the Quad became sluggish to ascend. Even at full throttle, it would [...]