Hello everyone. I bought this ARRIS X-Speed 250B 250mm Quadcopter Racer as my first drone. Maybe I shouldn't have started with a racing car, but that's where I want to go with drones. I want to say that I am very satisfied with the purchase.1. As this is my first drone I really appreciate that it comes fully assembled and ready to fly. The only additional purchase I had to make before flying were batteries (and a charger). The drone flies on either a 3S or 4S battery and after reading many reviews I'm still not sure which is the best. I bought a 3S 20C 2200mAh battery and a 4S 40C 1800mAh battery and I think I like the 4S 40C 1800mAh battery the best. Aside from the batteries, I just installed the props and everything went up. I really needed to research how to assemble the props so I've included a graphic to save you some time if you're a beginner like me.2. The device is very durable - I've had a few accidents where I thought it would definitely break, but there were only a few scratches. Of course, enough accidents will all fall apart, but it exceeded all my expectations. Besides the solid construction, the package comes with two extra props that I haven't had to use yet.3. All parts of the quadcopter appear high quality. First off, my experience with the 9-channel RadioLink AT9 2.4GHz transmitter + R9D receiver matches the great reviews I've read. The transmitter is reliable, has an incredible amount of features and with 9 channels you have more than enough switches to add extras like LEDs. I then evaluated the powerful 20 amp speed controllers they added for high speed 2300kV brushless motors. The flight controller on this drone is the SP Racing F3, an open source system that you can download and customize with CleanFlight - very nice. The only part I won't comment on is the camera as I haven't bought an FPV viewer yet (but I plan to update this review when I do). I've also noticed that some of the reviews here on Revain talk about different details than mine - it could be a recent update.?.4. The documentation is adequate, however it was on the DVD and not in the printed manual. Most of the manual talks about configuration, however this drone has been fully assembled and configured. There's also a nice video on the DVD that shows a little bit about setting up and flying (where locking, self-leveling and manual mode switching can be important). :)5. The SP Racing F3 Flight Controller is set to beep when the batteries are low. This beeper can be configured to beep at different voltages, which I modified to increase flight time. Also, after some reading I found out that you can buy a Radiolink PRM-01 Power Return Module that will send your battery voltage to your AT9 transmitter so you can set local alarms for the transmitter in the hand. This PRM-01 is plug and play and especially useful when the drone is out of earshot. Note: I bought the RC Flight Simulator 22 in 1 USB dongle and cable for less than $10 and downloaded the FPV Freerider for $5. to practice flying the simulator drone before destroying my real drone. This worked great with the RadioLink AT9 controller that came with the Arris XSP 250B. It has helped more than I can say! ---- Review Update 06/14/2016: I received my FatShark RC Vision System today but when I tried to put on my glasses to see the drone I had no luck. I was 99% sure the problem was that the transmitter was transmitting on a channel that the goggles couldn't pick up, but since I didn't know exactly which transmitter was on the drone I didn't know how to fix it should set dip switches, and so on I was up the drain. Finally, I removed the transmitter from the drone and removed the foam tape and protective plastic sheet to inspect the transmitter. In short, the transmitter is Skyzone TS5823S 40CH 5.8G 200MW AV Transmitter Module. When I found out about this, I was able to find the DIP switch settings online, and by turning off all the switches, FatShark displayed the video. I've uploaded two new images showing the transmitter and dip switch options, and another image that I believe shows the camera and chipsets used. Review update 06/28/2016: I recently created an FPV viewer for my Android tablet. I wanted to use my existing Android devices and just buy an inexpensive 5.8G receiver and input capture device. I ended up buying an Eachine ER32 5.8G Mini FPV 32ch Wireless AV Receiver (Revain Code: B017BFX3JQ). For more information on this project, see my review on this device. Review update 7/14/2016 Another option for FPV is the Tomlov F408 4.3" LCD 5.8G 32ch FPV Monitor sold here at Revain. It's cheap and excellent. a way to learn how to fly FPV before going into the goggles There are several other companies that sell the F408 FPV monitor - they all seem the same.
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