AI Thinker ESP32-Cam case with solid mount base

grabcad

I like compact stuff with little wasted space. I built this case to mount onto a steel human door and set up a triggerable snapshot whenever a cat passes through a cat door installed within it. Since the large door is steel, the mounting base is designed to hold a magnet or two which will keep the cam on the door, and i use temporary double-sided mounting tape to keep it from moving on that door. I found that double-sided mounting tape alone isn't enough to keep a device on when the surface keeps changing temperatures daily, and i did not want to use a permanent mount on the door, so the magnet compensates for the eventual delamination of mounting tape from the surface. The mounting block enables mounting on either long edge or short edge, and if a 1/4" magnet is not used for mounting, screws may also be used instead. This provides all options likely to be needed. The mounting block itself should be screwed to the back cover of the case using a 2.5mm screw and double-sided mounting tape, or just glue it together.The case leaves clearance for the connector pins, and the mounting block leaves just enough clearance for placing a 4-pin connector to 5V, Gnd, and two GPIO pins in sequence. In my case, the other end of the wire was a USB 2.0 plug that i used to connect to +5V and Gnd by standard convention, but the two signal wires of the USB were just the two GPIO lines that i used to send and receive triggers to another device (in my case the cat door sensor, and to a motor on the cat door to lock or unlock it). There is sufficient clearance to enable use of a microSD (TF) card with the device (look up what maximum specs it can handle before you buy a SD card for it), and to have a separate internal wire that does not connect to the pins from outside, maximizing the useability of the device.Finally, note that you do not have to use the mounting block or even print it. The case snaps together and works perfectly fine independently of the mounting block, there is one single screw mount on the back side dead center, just make sure your screw doesn't penetrate more than 4.5mm into the case or it may contact the board.For the cleanest 3D printing, the front cover and back cover are printed with the largest outside surfaces on the mount plate, and the mounting block was designed to build with the blue surface (surface with two smaller holes) on the build plate. Supports are needed.Enjoy. Let me know if you do something fun with it.