Usbbase
About the Usbbase PCB
Usbbase is an open source PCB design by daveshah1, published on GitHub under the MIT license. It is a 4-layer board measuring 65 × 50 mm, with 55 components from 28 distinct parts.
Other key parts include the CYPD2122-24LQXIT, HD3SS460RHR and LD3985M33R. By type, the board carries 15 resistors, 13 capacitors, 7 diodes, 5 connectors, 3 ICs and 3 inductors.
From the project
4k Mixed Reality headset
All of the hardware is designed in KiCad 4.0, in the spirit of open source.
- mainboard is the headset mainboard, containing the FPGA and processor. It is a 150x90mm 8-layer board with a minimum track/space of 4mil and a controlled impedance requirement. - camboard is the OV16825 camera subassembly - lcdboard is the Z5 Premium LCD subassembly - usbbase is a board that combines power, USB 2.0 data and Displayport into a USB-C connection, so openMixR can be used if your computer doesn't support USB-C.
Main components on the Usbbase
Usbbase bill of materials (BOM)
55 components, 28 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CYPD2122-24LQXIT | QFN-24-1EP_4x4mm_Pitch0.5mm | U1 |
| 1 | HD3SS460RHR | WQFN28EP_5.5x3.5mm_Pitch0.5mm | U2 |
| 1 | LD3985M33R | SOT-23-5 | U3 |
| 2 | BSS84 | SOT-23 | Q1, Q2 |
| 1 | BARREL_JACK | BARREL_JACK | CON1 |
| 1 | DISPLAYPORT_SINKSIDE | 0472720024 | J1 |
| 1 | USB-C | USBC-12401548E4#2A | J2 |
| 1 | USB_OTG | USB_Micro-B | P1 |
| 1 | CONN_01X04 | Pin_Header_Straight_1x04_Pitch2.54mm | P2 |
| 4 | TPD4E02B04 | USON10 | DA1, DA2, DA4, DA6 |
| 1 | TPD4E05U06 | USON10 | DA3 |
| 1 | CM3421Y600R-10 | CM3421Y600R-10 | FL1 |
| 1 | GREEN | LED_D3.0mm | LEDPWR1 |
| 1 | TPSMF4L6.0A | D_SOD-123 | D1 |
| 6 | TPD1E05U06 | X1SON2 | D2, D3, D4, D5, D6, D7 |
| 3 | Ferrite_Bead | R_0805 | L1, L2, L3 |
| 1 | 150µ | CP_Elec_6.3x5.8 | C1 |
| 5 | 100n | C_0402 | C2, C5, C6, C7, C8 |
| 4 | 1µ | C_0603 | C3, C4, C11, C13 |
| 2 | 390p | C_0402 | C9, C10 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1n | C_0402 | C12 |
| 4 | 1M | R_0402 | R1, R2, R6, R7 |
| 3 | 1k | R_0402 | R3, R12, R14 |
| 1 | 100k | R_0402 | R4 |
| 4 | 10k | R_0402 | R5, R11, R13, R15 |
| 1 | DNP | R_0402 | R8 |
| 1 | 0R | R_0402 | R9 |
| 1 | 4.7k | R_0402 | R10 |
Usbbase design files
The KiCad project lives in the daveshah1/openMixR repository on GitHub; these links point at the commit this page was built from.
Usbbase: common questions
How big is the Usbbase PCB?
The Usbbase measures 65 × 50 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Usbbase?
55 components, from 28 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Usbbase design files?
From the daveshah1/openMixR repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Usbbase design in my own project?
Yes, under the terms of its MIT license, which daveshah1 chose for the repository.
