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Tiny Yocto-ready ARM COM supports industrial temps

Jul 21, 2015 — by Eric Brown 1,429 views

[Updated: 8:00PM] — Gumstix launched a Linux-ready Overo COM with an 800MHz TI DM3730 SoC, 1GB of flash, a microSD slot, a camera input, and support for -40 to 85°C temperatures.

The latest Gumstix Overo Storm computer-on-module is a ruggedized version of the Overo WaterStorm, with a -40 to 85°C industrial temperature range — versus the WaterStorm’s 0 to 85° — and twice the on-board flash (1GB NAND). Otherwise, the IceStorm is identical to the WaterStorm.

Gumstix Overo IceStorm
(click image to enlarge)

Both the IceStorm and WaterStorm measure 58 x 17 x 4.2mm and weigh 5.6 grams. They both run Yocto Linux on a Texas Instruments DaVinci DM3730 SoC. This 800MHz Cortex-A8 SoC is accompanied by a PowerVR SGX530 GPU with OpenGL ES 2.0 support, as well as a TI C64x digital signal processor (DSP).

The IceStorm and WaterStorm are both further equipped with a 512MB LPDDR RAM, a microSD slot, USB host and OTG ports, and a 24-wire LCD touchscreen interface. Additional onboard I/O includes I2C, MMC, GPIO, audio, GPMC, and ADC. You get double helpings of SPI, UART, and PWM signals.

Gumstix Overo IceStorm front and back views
(click image to enlarge)

All this I/O is made available via the standard Overo 70-pin AVX expansion connector. The usual 27-pin Hirose camera connector is also available. Both modules run on 3.3 to 4.2V DC power, managed by a TI PMIC.


There are no wireless interfaces on the modules, but WiFi and Bluetooth 4.1-equipped TI Wilink 8 chips can be found on many other Overo modules including the AM3703 based Airstorm-Y and AirStorm-P, or the DM3730 based FireStorm-Y and –P, and the IronStorm-Y and -P. The only other extended temperature Overo COMs include the IronStorm-Y and FE modules.

Gumstix also announced the discontinuation of the DM3730 based Overo TidalStorm and Overo SandStorm, which runs on a similarly Cortex-A8-based, but non 3D graphics ready, TI Sitara AM3703. Similar functionality is provided by the Overo WaterStorm and Overo AM3703-based Overo EarthSTORM COMs, respectively.

Further information

The Overo IceStorm COM is available for $159, vs. $139 for the WaterStorm. More information may be found on the Overo IceStorm product page and the Gumstix Overo page.

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