Girdad
About the Girdad PCB
Girdad is an open source PCB design by ras-rap, published on GitHub. It is a 2-layer board measuring 20.5 × 35.5 mm, with 21 components from 11 distinct parts.
Other key parts include the CP2102N-AXX-XQFN28, MCP2122-E/SN and TFBS4711-TR1. By type, the board carries 10 capacitors, 6 resistors, 3 ICs and 1 connector.
From the project
A modern USB-C dongle/device for IrDA SIR.
A modern USB-C dongle/device for IrDA SIR.
- 115.2 kbp/s max transfer rate - 870-910 nm wavelength - 1m max usage distance - 115200 max baud
Main components on the Girdad
Girdad bill of materials (BOM)
21 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CP2102N-AXX-XQFN28 CP2102N-Axx-xQFN28 | QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U1 |
| 1 | MCP2122-E/SN | SOIC8-N_MC_MCH | U2 |
| 1 | TFBS4711-TR1 | CONN6_4711-TR1_VIS | U3 |
| 1 | USB_C_PLUG_USB2.0 USB_C_Plug_USB2.0 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | ASE-xxxMHz | Oscillator_SMD_Abracon_ASE-4Pin_3.2x2.5mm | OSC1 |
| 5 | 100NF C_Small_US | C_0402_1005Metric | C1, C3, C7, C8, C10 |
| 1 | 1UF C_Small_US | C_0402_1005Metric | C2 |
| 1 | 4.7UF C_Small_US | C_0402_1005Metric | C4 |
| 2 | 100PF C_Small_US | C_0402_1005Metric | C5, C6 |
| 1 | C_Small_US | C_0402_1005Metric | C9 |
| 6 | R | R_0402_1005Metric | R1, R2, R3, R5, R6, R7 |
Girdad design files
The KiCad project lives in the ras-rap/girdad repository on GitHub; these links point at the commit this page was built from.
- Layoutgirdad.kicad_pcb
- Schematicgirdad.kicad_sch
- BOMBOM.csv
Girdad: common questions
How big is the Girdad PCB?
The Girdad measures 20.5 × 35.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Girdad?
21 components, from 11 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 Girdad design files?
From the ras-rap/girdad repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Girdad design in my own project?
The repository has no license, so all rights stay with ras-rap. Use it as a reference, and ask the author before reusing the design.