Have same problem when I startup with my Raspberry Pi 4. My problem was that the raspberry Pi was startup with a high screen resolution, and my TV was to old to show this, so I only have black screen on this TV. Then I try to connect to a new type of TV, and now it show a beautiful picture. So check...

Hi I have order a Raspberry Pi 2 and will also order a camera, so I can play with opencv and face recognition. When I looking for a camera on ebay, on all the cheapest cameras are written "only Compatible with the old Model A and Model B Raspberry Pi" So now I am unsure of what to buy. Are...