Small Osmocom Hardware projects
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Harald Welte 8221a959b7 add ncn8025-brekaout board 2 years ago
clock-converter clock-converter: add TFP 4 outline to frontpanel 2 years ago
clock-generator clock-generator: Add 'export' version of frontpanel (mirrored) 2 years ago
dus-lmt-breakout initial design for DUS LMT breakout board 2 years ago
e1-tap e1-tap: Add BOM attributes 6 years ago
gtm900-breakout gtm900-bo: purge unused layers in schema + board 3 years ago
mpcie-breakout mpcie-breakout: Remove GND via underneath U.FL connectors 2 years ago
multivoltage-uart mvuart: align JP2 in 0.1' grid with JP3 (solves OSM#3037) 5 years ago
ncn8025-breakout add ncn8025-brekaout board 2 years ago
ngff-breakout ngff: update schematic pdf and placement pdf to hw version 3 2 years ago
ohm4-ocxo v3 final with gerber output 4 years ago
osmo-lea6t-gps update gerbers... 4 years ago
osmo-nvs-gps add gerber output of osm-nvs-gps v3 4 years ago
rj45-jumper-box RJ45 jumper box design 2 years ago
sc14dect-breakout sc14cvm-evb: Add attributes 4 years ago
sfp-breakout sfp-breakout: update BOM attribs for availability 2 years ago
siu-clock-breakout siu-clock-breakout: export PDF files 2 years ago
yang/doc Import presentation for the YANG project 2 years ago
.gitignore add .gitignore 6 years ago README: note that most designs are EAGLE 2 years ago

osmo-small-hardware - Various small Osmocom Hardware Projects

This repository contains a number of OSHW (open source hardware) designs. They are part of the Osmocom Open Source Mobile Communications project.

Most of the designs are done in EAGLE CAD; the schematics and board design files as well as the BOM are contained in this repository.

GIT Repository

You can clone from the official osmo-small-hardware repository using

git clone git://
git clone

There is a cgit interface at


Our coding standards are described at

We us a gerrit based patch submission/review process for managing contributions. Please see for more details


The osmo-clock-conv is a small board for low-jitter conversion of a sine clock into a square clock, based around the LTC6957-4.


Osmocom Clock Generator board, using the Si5351C clock synthesizer to derive up to 8 different clocks from a single clock reference, such as a 10MHz GPS-DO or OCXO.


This is a break-out board for the LMT port of Ericsson DUS-31/41 baseband units.


The Osmocom E1/T1 tap adapter allows you to tap into the communication of an E1/T1 line.


Break-out board for the GTM900B Calypso based GSM cellular modem.


This is a small break-out board for miniPCIe (mPCIe) type cellular / WWAN modems.



This is a small break-out board for M.2 (NGFF) type cellular / WWAN modems.



Small evaluation board for the u-blox LEA6-T timing GPS receiver.


Small evaluation board for the NVS GPS receiver.


A jumper box for RJ45 cables. Useful for the many different RS232 console pin-outs on RJ45.



Small evaluation board for the SC15 DECT module

sfp-breakout + sfp-experimenter

Boards for playing with SFP transceivers


A break-out board for the clock/sync port on the Ericsson SIU-02