u/olgampavlova

I need to supply my desk with dashboard to switch it on and off occasionally. No wires, just some data in my bag. At the same time, I need to assemble all my Zero shields in one device to play around.

These two reasons inspired me to design the travel box for my Pi Zero 2W tower.

Shields:

1. UPS-Lite v1.2 803040 (1000 mAh).
2. Waveshare USB/LAN hub (3 + 1) RJ45.
3. Waveshare 2.15 ePaper hat (black, white, red).
4. Pi Camera Zero v22 OV5647 (2592x1944 10-bit GBRG).

Details:

1. No SD card slot. I rarely change or reinstall OS.
2. Holes are bigger than they could be to suit all possible wires.
3. FreeCAD parametrized model (what a nightmare to use the software, nevertheless I continue).
4. One USB port is sacrified to install camera.
5. Switcher is not easy to manipulate, but any toothstick or tiny screwdriver helps immediately.
6. When it is possible, I prefer LAN over WiFi to connect with SSH. So, one of shields is exactly for this purpose.

Details:

1. Arduino Nano BLE Sense (1st rev).
2. LiPol 90 mAh battery.
3. OLED 0.91 128x32 I2C.
4. USB C charger.
5. Boost convertor.

Soldering:

1. One of resistors (RPROG) on USB C charger is replaced to 15 kOm to provide proper charge DC.
2. Switch connects the battery either with the USB C port or with the board (through the boost convertor). They cannot works simultaneously.
3. The boost convertor gets 3.7 V and provides 5 V straight to the board VIN pin.
4. OLED uses the 3V3 board pin.

Box is created in FreeCAD (what a nightmare) and 3D-printed with PLA. And, of course, it damaged a bit during soldering :)

…not quite, but if we speak about Victorinox, I definitely happy to have only two of them in my bag.