Backup camera connected to ipad?

It’s not possible to connect a wired camera to an iPad. You can with Android device. You could try a wireless approach to see how it works. I got myself one of those endoscope inspection cameras. It is wireless and communicates to the iPhone app over Bluetooth. The main body of the kit is a small rechargeable unit that sends the Bluetooth camera signal to my phone and it has the endoscope camera plugged in over USB.

The endoscope camera’s field of view is useless for anything other than inspecting small places up close. But I can disconnect the endoscope and attach a HD usb webcam and receive very sharp images. So yeah in theory you could do it wirelessly. But you would have to keep the base unit charged by either giving it constant power or from a reverse power signal. In fact, I am not even sure my camera could be powered i.e. charging, and communicating live images simultaneously. And it sounds like a bit of a hassle to be turning on the iPad and reconnecting to the camera every time it is needed. Sounds messy but could be fun to play with. You can pick up those endoscope units for nothing now and a HD miniature webcam is easy to come by.