I have been tinkering quite a bit with my RPi4. It's a powerful little device. I'm getting more comfortable with the hardware. I've been able to get motion detection working with the original Pi Camera. The camera was pretty cheap considering that the v2 boards are getting all of the attention, and dealers are trying to clear their older stock. I've also managed to get image capture working with a Logitech C920, but that was not as a much of a challenge. The RPi4 also recognizes when my phone is within bluetooth connection range. With the combination of bluetooth paring and motion detection, I've been able to pull together a simple photo booth for candid pictures when I sit down at my desk.