Swivel Hinge UMPC

thingiverse

Assembly Instructions: 1. Carefully detach Ethernet port and all USB-A ports from pi 4, taking care not to damage the pi. 2. Solder a USB extension cable to the pi, then plug in the USB receiver for the keyboard. Next, solder a power cable attaching another pi USB to the mini-USB on the keyboard, and remove the small battery that came with the keyboard. 3. Connect wires to GPIO pins, pass them through the hinge, then solder the other side to the LCD. 4. Solder wires to GPIO pins, then connect the other side to the Arduino. Afterwards, solder a second USB from the pi to micro-USB plugging into the Arduino. 5. Strip insulation off female HDMI to male micro HDMI cable and run it through the hinge. Plug in the micro HDMI side into the pi. 6. Solder fan wires to GPIO pins. 7. Screw the hinge, pi, trackball, and fan into the frame. 8. Assemble three pieces of the top frame together, then screw the LCD onto it using standoffs. 9. Connect the LCD to HDMI using the included 180 adapter. 10. Attach HDMI and screen guards onto metal top frame. Screw & Nut List: 4 M1.4 x 10mm for fan 4 M2 x 10mm standoffs for LCD 4 M2.5 x 30mm for swiveling hinge 2 M2.5 x 10mm w/ lock washers for opening/closing hinge 4 M2.5 x 10mm for pi 2 M3 x 15mm for left side of trackball 2 M3 x 25mm for right side of trackball 8 M3 x 8mm for top frame assembly 4 M3 x 25mm for screen bezel/"HDMI guard" Parts List: 5" touchscreen HDMI LCD + 180 adapter (it should come with this) Raspberry Pi 4 micro sd card (at least 4gb) 3D printed bottom frame ultra slim battery bank (preferably "rupolar" brand) mini keyboard with dedicated 2.4ghz receiver (preferably "ipazzport" brand with dedicated mouse buttons on the right side) swivel hinge from ThinkPad X200/X201 tablet (hinges from other swivel laptops should work, but cad model will need to be adjusted) Blackberry trackball breakout module Either 3 aluminum or steel metal sheets or 1 metal sheet, depending on how precisely you can cut metal. I'm using 3 metal sheets bolted together to achieve the shape that I cannot cut out of one piece. 16mmx16mm tubeaxial fan (3.3V or 5V so it can be powered from the pi GPIO) Leonardo Pro Micro Arduino Trackball Driver: https://github.com/LSChyi/blackberry-mini-trackball