DivenParker

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  1. Test flight with Holybro Kopis 1 powered by Tattu 1800mah 4s 75c lipo battery Tattu 4s 1800mAh 75C Li-Po battery review: This battery comes well packed with charging plug protector and safety instruction. At first look it seems very well made with good quality terminals. Battery pack measures around 90 x 33 x 30 mm (L, W, H). Due to the the aluminium envelope, the Tattu 1800 mAh weights a bit more than other 4s Li-Po batteries with same capacity. After a bit of research I found out that this producing technique provides not just better heat dissipation and impact resistance, but also compression, in order to minimize puffing during high discharge. Tattu 4s 1800 mAh 75C battery technical specs Suitable for FPV racing drones; Minimum of 1800 mAh storage capacity; 4 cells of 3.7v. Total voltage of 14.8V; Total power of ~ 26.64 Wh; Up to 5C charging rate (do not exceed this value!); High discharge rate (75C); Max Cont Current of 135 A; Maximum burst discharge rate of 150C; Max Burst Current of 270 A; JST-XH charging plug; XT60 discharge (drone) plug; Net Weight: 198 grams; Dimensions: 90.30 x 33.27 x 29.90 mm (L W H). Battery came about half charged (48%), which is recommended for storing. I measured 15.34V on the XT60 plug. Cell 1 – 3.83V, Cell 2 – 3.845, Cell 3 – 3.83V and Cell 4 – 3.83V Is it worth to upgrade from 1300mAh to 1800mAh? In order to make a fair compassion I used same charger (SkyRC iMAX B6 Mini) with same settings. Both batteries I used for the test had less than 10 charging cycles. Firstly, I fully discharged both batteries, rest them for 1 hour, then charged them up at 0.5 A. As you can see in the comparison table bellow, the R-Line 95C finished the discharge process more balanced. At the end of charging, both batteries were well balanced. The two batteries remained cold during the charge. In order to test how these two behave in the real world I used my Kopis 1 racing drone. I tried to fly them with similar amount of throttle in order to get the most accurate results. As I’m not a Pro racing pilot, I haven’t noticed significant performance dropping from 95C to 75C while flying at top speed. Also, the extra weight doesn’t seem to be an issue for the 2450KV brush-less motors. Frankly, it’s hard to get an objective measurement of true “C” rating without professional tools. I ended my test flights when OSD shown 14 volts (~ 3.5V/cell). While my flight with the 1300 mAh LiPo lasted about 5 minutes, the one with the Tattu 4s 1800 mah ended after almost 7 minutes. Unfortunately, I forgot home my infrared thermometer and I can’t confirm if motors and ESCs became hotter after the longer flight. Conclusions Unless your are a pouch-out fanatic, the “only” 75C should be just fine. Personally, I found the battery powerful enough for most flight maneuvers, including repeated flips and rolls. Compared to the 1300 mAh LiPo, this Tattu 1800 mAh 4s 75c lipo battery offered more than 1 minute of extra flight time. IMHO, for practicing, the extra capacity/flight time is welcomed, but if top speed and agility really matters, you should stay on the lowest capacity that you need to finish your race.
  2. Some tips of diy a fast drone

    Thanks for your reply, I mainly talk about how to build a fast drone so I didn't mention the radio, thanks for your advice on radio. And ask you a question about lipo: you said you use Tattu lipo because tattu is not too far from you? are there any other reasons?
  3. Some tips of diy a fast drone

    Here, I share my experience about how to diy a fast drone. In the past, I used QAV 250 frame equip with 1806 motors and 3S Lipo battery can fly very fast; and now I use 2205/2305 motor, come with small and light frame, DALRC6045 propeller, the speed get 185km/h. It is very important to choos your drone parts, these are my experience of how to choose drone parts? Motor: I have used many different motors, and these are some of I used. 2205 motors: equip with dalrc5045 3 propeller, their thrust is about 1200g(motor’s weight is about 30g, 4 motor is 120g) 2206 motors: I have used it, the weight is too heavy, hard to turn the corner, and the speed is not increased significantly; 2305 motors: this is my new test motors, and the thrust is very good, they’re super smooth and have a good power! For choosing drone motors, I think T-motor is better than others, most racing pilots are choosing their motor. Frame: I have three requirements for select the frame: Light weight; Small wind resistance; Strong and solid; In the past, I sued dalrc220 frame because it is strong and solid, and needn’t consider the weight, now I like the new frame xr220, because it is light, strong solid and small wind resistance. If you don't know frame or how to choose frame, you can read this guide: Quadcopter Frame Sizes Guide ESC: I think the most ESCs have no difference, the program are similar, you just need consider the price. I’m using the 30SA ESCs, in order to match my 2305 2450KV motors. Battery: To flight fast, a good lipo battery is very important; low C rate can’t discharge high current, if you want to flight fast, you need at least 60C or more lipo battery. How to choose high discharge rate lipo battery? I recommend you can choose this Tattu drone lipo battery, best power delivery, autonomy, reliability, long life and less sag than any other lipos, and most FPV pilots are using their battery. I have built many FPV quadcopter, and this is one of my FPV quadcopter’s build parts; Frame: XR 220; Motor: T-MOTOR 2305 motor Propeller: dalrc 5045 3 blade propeller; ESC: BLHeli_S 30 AMP ESC; Camera: Hsh1177; Lipo Battery: 1300mAh 4S 75C Lipo battery; Flight Control: F3. What do you think about these? Do you have any other tips to add?
  4. There are some beautiful photos are shoot by DJI Phantom 4 Pro, .
  5. This is an interesting motor as a first entry as it bucks a few of the current trends in the dominant motors on the market. Review: The stator size is right in the middle at 2305, a bit smaller than the popular large motors, and a bit larger than the popular small motors. The weight is right in the middle as well, coming in at just under 30g. This seems to be a motor of the middle ground on just about every front, with a fairly large air gap, square magnets, and multi-strand windings. The shaft is retained with a c-clip, but it does retain the stronger single-piece hollow shaft design. The machining quality and smoothness of this motor are top notch, with excellent finishing and no play. Results The results here are reflective of the middle ground this motor seems to occupy; very solid performance, especially for the smaller stator size and conservative kV. The kV tested a tad lower than advertised coming in around 2390kv. One of the most noticable things about these results is the relatively flat performance across the range of props, only showing about 100g difference between the lighter 5″ props and the heaviest 5″ props. This is indicative of the larger air gap and shorter stator, where the lower torque loaded props respond well to the kV and the heavier loaded props bog the motor down a bit. That being said the performance here is very comfortably in the middle range, easily clearling 1300g on the mid to heavy load props, and staying around the 1200g mark even on the light props. It is also interesting to note that this motor barely got out of the low 30A range even on the heaviest props. It seems clear this motor was targeted towards that middle space of the average user, a pilot looking for a mid-weight motor that is usable on a broad range of props and a broad range of flying styles without being over-powered or killing the battery. This seems to have it the nail on the head for a general use, broad application motor that just about any pilot can find a use for. Tattu 2305 2450kv Test Full Results Tested KV: 2390kv Weight: 29.7g Stator W: 23mm Stator H: 5mm Test Environment: XRotor 40A ESC Timing: Med-high Dither: 7 PWM: Damped Light Venom 60A Power Supply 2Farad Caps x2 in Series Custom Datalogger TI TivaC Launchpad Allegro ACS758-200B Voltage Divider EagleTree eRPM Sensor Custom Thrust Stand w/ HX711 4 ms logging rate Atmospheric Data (Typical) Barometric pressure: 29-30 in Ambient Temperature: 70-74 deg F Humidity: 50-60% These are parts data of this test, to view more test data, you can click this link: http://www.miniquadtestbench.com/tattu-2305-2450kv.html Tattu quadcopter motors: https://www.genstattu.com/ta-motor-2305-2450kv-4pcs.html
  6. I have waited a long time to buy this Xiaomi mi drone 4K camera drone, and now I finally get it. When I got my Xiaomi drone, I’m very excited and can’t wait to open it. Look, this is Xiaomi mi drone overview, it looks very beautiful; This is the Xiao mi mi drone 4K camera, it is said its camera is the most expensive and important, I should be carefully with it, the 4K camera. Remote Control: These are the simple introduce about Xiaomi mi drone 4K, and next I decided to fly it. Here are some Xiaomi mi drone flying photos: This flight feel very well, Xiaomi drone is easy to flight, it is very suitable for beginners(I’m a beginner), and its price is not expensive, just need $430, Comparing to other brand of drones, the price of xiaomi mi drone 4k camera drone is very affordable. Following is the comparison chart: As you can see, 4K drones in other brands are selling for at least $589, which makes Xiaomi a very reasonable price drone among the competitors. And Xiaomi drone has many magic features: Choose a point and set desired hover height and radius. Mi Drone will automatically circle around an object, capturing beautiful shots of the object. Set a route so images and footage captured will be uninterrupted and beautiful. Set a location on the map within the app, and Mi Drone automatically flies towards the pinned location. Mi Drone calculates power required to return home and automatically returns when battery is low. Once Mi Drone disconnects from the remote, it returns home automatically. Should an accident occur during the return trip, the Mi Drone can be easily located using its GPS real-time tracking System. Automatically stops and hovers when approaching no-fly zone When Mi Drone approaches a no-fly zone, it automatically stops, hovers, and sends out a smart alert to prevent any accidents from occuring. Some tips about Xiaomi mi drone 4K: (1) You need to fly it in an open area and with a good gps signal. (2) When you start flying your drone, make sure that the back of your drone is face to you, not the forward. In this way, you are easy to figure out the direction of it. (3) When the drone is too far away or in a place that lost connection with your remote, the drone may switch to self control mode, which is very dangerous as it may drift everywhere till crashed. Therefore huge empty space is always recommended for your drone flying. (4) When you at a zone with less GPS signals, you need to let antenna of remote control to face the drone. (5) In case of emergency, press power and take off key at the same time, the drone will stop immediately and fall down in crashed.
  7. Ditches - FPV FREESTYLE

    You'd better try your best to convince her, this is a cool sports.
  8. Ditches - FPV FREESTYLE

    Larger UAVs is very nice, too. You can take many beautiful photos and videos, and get longer flight time, it is really very good!
  9. Just another fun day will DallasFPV! So Brian dared us all to fly the dried up creek and hit the bridge up and of course we did! Always a blast flying with these guys! And this is my test for Tattu 2305 2450kv motor and Tattu 1300mAh 4S 75C lipo battery.If any of you live in the Dallas and want to fly, just hit us up! MigViceQuads Drakko FTattu 2305 2450kv motorSpedix IS30A MultishotRaceflight Revolt RC18MatekHUBOSDSE-8 Runcam Mini 2.1 lensHQ 5x4.3x3 v1STBS Unify Pro Race 200mwTBS Triumph XSR Fatshark Dominator V3VAS Mad Mushroom TBS PatchTaranis X9D PlusHall GimbalsThunder Power Adrenaline 1600 (Extra Juice)
  10. There is a new Agriculture drone lipo battery: Tattu Plus2.0 18000mAh 6S1P 22.2V 15C Smart Lipo Battery with AS150+XT150 plug; Specifications: Minimum Capacity: 18000mAh Configuration: 6S1P / 22.2V / 6Cell Discharge Rate: 15C Max Burst discharge Rate: 30C Net Weight(±20g): 2270g Dimensions: 205.5mm Length x 94.2mm Width x 79.5mm Height Discharge Plug: AS150+XT150 plug Charge Plug: XT90 If your drone fit in this size, you can consider check it out. Links: http://www.genstattu.com/ta-plus2-0-15c-18000-6s1p.html Photos:
  11. Battery and Prop

    Ther is a quadcopter frame, lipo battery, motor and propeller size matching table. You can choose 3300mAh 4S Lipo battery for you F450. But this just a reference material, you can read this post to know more : http://rcfpvplane.com/quadcopter-frame-sizes-guide/
  12. Tattu and SP FPV Team spent 3 days in Kuitun river canyon, Xinjiang Province, China to make this video. FPV powered by great Tattu power flew over the great Kuitun river canyon. Such an amazing flight in beautiful scenery. Video was shot by Tattu and Super Pluse Team with DJI Inspire.
  13. My ESC's keep beeping after connecting battery

  14. Build quadcopter

    What quadcopter do you want to build? What's the size of your quadcopter frame? 250? 210? 180? Recommend you to read these post: Rotorx Atom V3 Build Mini Racing Quadcopter Build, Build A Quadcopter Frame TEACH YOU HOW TO DIY A QUADCOPTER
  15. Hello all,I've just finished my Quad F450 build and as I tried to power it on for the first time my ESC's keep beeping and the FCU doesn't power on. It this happening cause of a faulty/wrong connection I did or do I have an issue with something from my components? My build consists of :1. Frame F4502. Flight Controller Unit KK2.1.53. Motors x44. ESC's x45. UBEC6. Battery7. Tx/RxThanks in advance for any help and info you can provide.