DJI set to reveal latest professional drone this week, Amazon now offering tours of its robotic fulfilment centre, Roborock unveils its latest S8 flagship robot vacuums, we take a look at the Kobo Elipsa 2E ereader which is also an ewriter, Oppo releases a new affordable yet stylish smartphone, Ecoflow releases its River 2 portable power stations and we’ll answer all your questions in the Tech Guide Help Desk.