Dronemaker DJI has warned that some of its unmanned aerial vehicles are suddenly falling out of the sky mid-flight. The company says there have been a'small number' of reports surrounding its Matrice 200 series drones, where a power issue is causing them to crash mid-flight. However, the warning has prompted UK police to ground some of their drones. DJI says there have been a'small number' of reports surrounding its Matrice 200 series drones (pictured), where a power issue is causing them to crash mid-flight The United Kingdom Civil Aviation Authority issued a safety notice saying that some 200 model drones lost power mid-flight and dropped straight down to the ground. In one case, a drone experienced an'in-flight issue' and landed on the roof of a commercial building.

Drones are pretty nifty devices, but the prices for the best ones can often feel as high as the altitudes the drones can reach. Fortunately, B&H currently has a one-day sale on the DJI Phantom 4 Advanced Quadcopter that lets you pick up the device for $370 off the regular price of $1,199. All total, you'll be paying just $829 as B&H is offering free shipping. The quadcopter flies at around 44 miles per hour and can stay up in the air for around 30 minutes. It also comes with five sensors for avoiding obstacles, and its 20MP camera can capture 4K video with a range of 4.35 miles.

This post was done in partnership with Wirecutter. When readers choose to buy Wirecutter's independently chosen editorial picks, it may earn affiliate commissions that support its work. Read their continuously updated list of deals here. At $400, this is the lowest price we've seen for the InFocus ScreenPlay SP1080 in over a year. While we saw some great pricing around Black Friday of 2016, we didn't note similar drops this year as this projector, for whatever reason, has largely hovered around $500.

Artificial intelligence was one of the most hyped up technologies in 2017, and 2018 doesn't look like being any different, with good reason – AI is creeping its way into every aspect of our daily lives, whether it's browsing social media or chatting to a smart speaker in the corner of our living rooms. We've heard a lot about AI increasing its presence on smartphones – recognizing objects in photos, powering digital assistants and so on – but plenty of other gadgets now come with built-in AI. Drones need to have some level of autonomy to stop them from falling out of the sky or ramming straight into a tree, and it's thanks to AI that drones like the DJI Phantom 4 Advanced can pilot themselves as and when needed. The Phantom 4 Advanced, like several other models, is smart enough to pick you out from a crowd and can take a selfie of you without you having to be at the controls. The same kind of intelligent tech enables it to identify a quickly approaching obstacle so it can swerve to avoid it – all thanks to the on-board image processing AI.

A bizarre drone designed to take the hassle out of walking your dog is being advertised by an online retailer. Drones Direct say that they have modified a popular automated aerial vehicle to allow owners to take their pet for a stroll completely hands free. The device uses GPS to lead dogs along a programmed route. Their DJI Phantom 4 Dog Drone, which the firm insists is a genuine product, costs twice the price of the regular model at £1,999 ($2,590). A bizarre drone designed to take the hassle out of walking your dog is being advertised by an online retailer.

It's easy to get lost in the great pantheon of consumer drones. Even just looking at industry leader DJI's options, there are enough choices to set your head spinning faster than a quadcopter blade. Coming in at a cool $1,800, this marks the top end of what could be considered DJI's consumer line, with the next level up being the $3,000 pro-level Inspire 2. Nice controller with a bright screen comes bundled. Some of the autonomous flight modes are still lacking. The tablet controller isn't as powerful as your phone, and the app experience while streaming video is glitchier too.

Since the small UAVs were released for commercial use, drones have been a popular gift amongst tech enthusiasts, photographers, videographers and teens alike. Retailers from Best Buy to B&H have become completely saturated with a variety of drone makes and brands, making the selection process not so simple for those who are looking for the ideal model for someone on their shopping list. Whether you're shopping for a first-time drone user or looking for the best-ranked model of 2016, there is a selection of drones to search for by category for the holiday season. Best Drones Under $200: While these models likely won't be as durable as, say a Phantom 4, moderately priced drones are great for someone who is just starting out with a drone or for someone who enjoys flying them for fun. The U45 Blue Jay WiFi FPV Quadcopter Drone received good reviews on Amazon as easy-to-use and good in-flight for its price.

If there's a drone that can claim ownership of consumer airspace, it's DJI's Phantom. The company's white, 4K-camera-toting quadcopter is the Prius of the skies; hip, accessible, and ubiquitous. Automated flight features make it possible to fly places and get shots previous models could not. It's harder to crash into stuff, with is safer for you and for your wallet. Insanely fast sport mode is a ton of fun.