DuoVero Design Overview

Robust Mechanical Design and Small Form Factor

The more powerful Gumstix DuoVero product line builds on the success of the mechanical design that was developed by Gumstix Engineering for the Gumstix Overo series.

Each Gumstix DuoVero COM can be used in robust, hand-held and portable applications. It's tiny, powerful and robust:

  • A computer-on-module the size of the small finger:  58mm long x 17mm wide x 4.2mm high = 2.28 inches x 0.67 inches wide x 0.16 inches.
  • Dual-core ARM Cortex-A9 processing at 1GHz with 1GB RAM.mi
  • Connects to any expansion board of the DuoVero series or a custom-made expansion board.
  • A pair of robust, 70-connectors bring out 140 signals, including the camera signals, on the lower side of the DuoVero COM to mate with an off-the-shelf Gumstix expansion board or custom-build your own expansion board to suit, using the openly published expansion board schematics.


Connectors on each DuoVero COM

The bottom surface of each DuoVero COM has two (2) x 70-pin Hirose DF40 connectors: (J1) and (J2). Each connector has the same signal pattern as every other DuoVero COM. See the DuoVero System Reference for more information.

Note: The DuoVero series is NOT compatible with the Overo series, as a different set of signals have been brought out on the dual, 70-pin connectors than in the Overo series. Refer to the System Reference documents, available as a PDF download from the main page of this Developer Center.

2D and 3D CAD drawings have been posted by Gumstix in the COMs section of pubs.gumstix.com to assist the design process of a custom enclosure or mounting assembly for a DuoVero-based configuration.


The signals and pin numbers of Connector J1 and Connector J4 have been detailed with the Duovero System Reference .

The Gumstix DuoVero COM delivers ARM Cortex-A9 computing power, up to 1GB of RAM, a microSD card slot and, optionally, wireless communications in this very small and robust form factor.

Based on a common mechanical footprint and a pair of robust 70-pin connectors, any model of DuoVero COM can be mounted on any DuoVero-series expansion board or to a compatible custom-designed expansion boards. The selection of features in openly-available designs includes HDMI, MIPI-compliant camera and display interfaces, Ethernet, USB Host, USB OTG, USB console, stereo audio, a power input jack and breakouts for A/D, GPIO, SPI, PWM, I2C, and 1-wire.

Figure 1 shows the main components of a DuoVero COM which includes a Texas Instruments OMAP™ applications processor (ARM® Cortex™-A9 core), package-on-package (PoP) stack memory, a TWL6030 power management module, a TWL6040 audio codec, interface ICs, and an optional Wi-Fi™ and Bluetooth™ module.


Further Design Information

General Information

See the Duovero System Reference for more information.

User Wiki

·Many hints, tips and ideas have been posted by members of the Gumstix community in the User Wiki.

Component Information

  • ·To find detailed specifications and component information for any DuoVero COM or expansion board, review the information posted on the main page and behind each tab of each product page at www.gumstix.com for that particular DuoVero COM or expansion board.

Gumstix Openly Publishes the Schematic of Each Expansion Board

  • Gumstix publishes the schematic of each expansion board in the DuOvero series in Eagle format at pubs.gumstix.com.
  • Available under creative commons license, these schematics have been made available to enhance rapid development of a custom expansion board(s) that incorporates features and functions already designed by Gumstix Engineering.

Connecting Hardware for the Gumstix DuoVero Series

  • For the DuoVero and Overo series, Gumstix sells a pack of retaining spacers in the accessories section of www.gumstix.com.
  • While the mating of a DuoVero COM to an expansion board is quite secure and the boards lock into place well, the addition of four retaining spacers ensures the two boards remain together for mobile, handheld and transportation product designs.