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DuoJanus is an interposer for the DuoVero. It sits inline between a DuoVero COM and a DuoVero expansion board.

It also provides a Serial-over-USB port for accessing the DuoVero COM console. This is a perfect companion when prototyping with the DuoVero.


The DuoJanus™ expansion board sits inline between an DuoVero COM and a DuoVero expansion boards, and provides a Serial-over-USB port for accessing the DuoVero COM console.

With a footprint very close to the DuoVero COM (the USB connector sits vertically outside the COM footprint), the DuoJanus board can be used to debug many expansion board settings where a console port on the expansion board has not been configured.

Included Components
DuoVero Interposer Expansion Board

Interposer board for the DuoVero series.

Board-To-Board Connector

2 x 70-pin Hirose DF40 Connectors

Product Family


USB Console Port


Key Components
USB Mini-B Jack (Vertical)

Vertical mount, thru-hole. Overo series: USB console port for serial programming. Verdex Pro series: can be used as USB host or USB device.

Mating Connectors
70-Pin DF40 Connectors (Female – DuoVero Exp.)

Connect your Gumstix DuoVero expansion board to a COM with these 70-pin DF-40 connectors.

70-Pin DF40 Connectors (Male – DuoVero COMs)

Connect your Gumstix DuoVero COM to an expansion board with these 70-pin DF40 connectors.


Please read the instructions in the README file carefully before starting. Instructions and functions are explained in the file.

Files that are needed (such as bootloader and operating system) to create a bootable disk image, are available below.

Our Support page links additional resources.

Software Version:

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