The IPi V4 is a direct design offshoot of the IPi VRT. Whilst keeping the rotational bearing of the VRT, the V4's design is centered around being highly compact, yet easily accessible for modifications.

The IPi V4 is a two part design, (three, if counting the internal print in place bearing) with the mounting rotational bearing snapping to the top of the camera body. The only screws needed are for mounting to the ceiling, though two M2x4 screws can be used to secure the camera PCB if you wish.

Both versions of the camera body have a single port for insertion of a MicroUSB cable. Mini HDMI and Data MicroUSB ports were not included in the casing design since the IPi series is designed for wireless security monitoring, hence only a power source is really necessary. The PCB is easy to remove, in case you need to access those I/O ports.

With the GPIO version of the camera body, there's a channel in the camera casing that allows for GPIO pin's soldered portion to rest in, keeping the PCB flush with the casing. With the more open internal volume, (Compared to previous IPi versions) one can easily install pHats, fans, shims, jumpers, etc. A small heatsink should be used if there's no active cooling installed, since ventilation is limited, as well as sending pictures and video via motioneyeOS causes the CPU to get a bit hot when motion is detected.

The IPi V4 fixes an issue with the IPi VRT, in that the camera is angled down 68.1° (Compared to the VRT's straight forward camera position) to allow to be used in rooms with higher ceilings. The VRT's camera positioning caused it to see more ceiling, than floor and doorway is placed higher than 7 1/2 ft. (2.28m)

Hardware:

Raspberry Pi Zero W: https://www.adafruit.com/product/3400

Raspberry Pi Camera V2.1: https://www.adafruit.com/product/3099

Raspberry Pi Zero Camera Ribbon Cable: https://www.adafruit.com/product/3157

Micro SD Card 8GB: https://www.amazon.com/Sandisk-MicroSDHC-Memory-Card-Adapter/dp/B000WH6H1M

2A Wall Power Supply: https://www.amazon.com/ICV-USB-Wall-Charger-Lightweight/dp/B0119BUJDQ/ref=sr_1_8?dchild=1&keywords=2A+phone+charger&qid=1598379406&sr=8-8

MicroUSB Cable: https://www.amazon.com/AmazonBasics-Male-Micro-Cable-Black/dp/B071S5NTDR/ref=sr_1_16?dchild=1&keywords=micro+usb+cable+10ft&qid=1598379014&s=electronics&sr=1-16

M2 x 4mm Screws: (If you want to secure the camera PCB) https://www.amazon.com/XunLiu-Grade-Alloy-Socket-Screws/dp/B07Q18NTVJ/ref=sr_1_3?dchild=1&keywords=m2x4+screw&qid=1598379793&s=industrial&sr=1-3

M4 x 12mm Screw: (For ceiling mounting) https://www.amazon.com/M4x12mm-Drilling-Hardware-Accessories-Philips/dp/B07QHWKNXC/ref=sr_1_2?dchild=1&keywords=m4+self+tapping+screw&qid=1598379700&s=hi&sr=1-2

Software:

motioneyeOS: https://github.com/ccrisan/motioneyeos/releases

Assembly:

1) After installing motioneyeOS and setting up its wpa_supplicant.conf file, attach the large end of the camera ribbon cable into the Raspberry Pi.

2) Slide the Raspberry Pi under the Camera Body's retaining tabs, then pivot the rest of the PCB down into the casing. The MicroUSB ports should line up. The casing has a channel modeled in the side to accommodate the ribbon cable coming out from the Raspberry Pi.

3) Insert the smaller end of the ribbon cable into the Raspberry Pi Camera Module, then place the module into the view port. The view port keeps the module in place, but if you wish, now you can install two M2x4mm screws to secure it in place.

4) Screw the Rotational Bearing to the ceiling. Be sure to free up the bearing to spin, should during the printing process the bearing be slightly fused. (.04mm clearance was used between rotating surfaces)

5) Index the and fit the Rotational Bearing's locking tabs into the Camera Body's indexing recesses.

6) Plug in the MicroUSB Cable.