Pmod uext
jyhi·pmod-uext
About the Pmod uext PCB
Pmod uext is an open source PCB design by jyhi, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 30.5 × 20.3 mm, with 9 components from 5 distinct parts.
Other key parts include the TMUX1309PWR. By type, the board carries 4 ICs, 2 connectors, 2 resistors and 1 switch.
From the project
Pmod™ Compatible UEXT Adapter Board
This [Digilent Pmod™][pmod] Compatible module converts between a 12-pin Pmod interface to an [Olimex Universal Extension Connector (UEXT)][uext] interface.
[pmod]: https://digilent.com/reference/pmod/start [uext]: https://www.olimex.com/Products/Modules/UEXT/
Select a Pmod interface type with the DIP switch (SW1). This routes the correct pins between Pmod and UEXT.

Main components on the Pmod uext
Pmod uext bill of materials (BOM)
9 components, 5 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | TMUX1309PWR Texas Instruments | TSSOP-16_4.4x5mm_P0.65mm | U1, U2, U3, U4 |
| 1 | 61301221021 Wurth Elektronik | PinHeader_2x06_P2.54mm_Horizontal | J1 |
| 1 | 61201021621 Wurth Elektronik | IDC-Header_2x05_P2.54mm_Vertical | J2 |
| 1 | 219-2MST CTS | SW_DIP_SPSTx02_Slide_6.7x6.64mm_W8.61mm_P2.54mm_LowProfile | SW1 |
| 2 | CRCW040210K0JNEDC Vishay | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2 |
Pmod uext design files
The KiCad project lives in the jyhi/pmod-uext repository on GitHub; these links point at the commit this page was built from.
- Layoutpmod-uext.kicad_pcb
- Schematicpmod-uext.kicad_sch
Pmod uext: common questions
How big is the Pmod uext PCB?
The Pmod uext measures 30.5 × 20.3 mm, has 4 copper layers and is 1.581 mm thick.
How many components are on the Pmod uext?
9 components, from 5 distinct parts. The full bill of materials is listed on this page.
Where can I download the Pmod uext design files?
From the jyhi/pmod-uext repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Pmod uext design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which jyhi chose for the repository.