Handheld Development Kit (3.5")
The Handheld Development Kit (3.5") is a solutions kit for those prototyping handheld devices. This kit features the Alto35 expansion board and Overo AirSTORM-Y COM.

Handheld Development Kit (3.5") 




Handheld Development Kit (3.5")
Featuring a 3.5” LCD touch screen, audio in/out, a 3D accelerometer, push-buttons, LEDs and more, this Gumstix 3.5” Handheld Development Kit has all the hardware you need to get started with your own handheld application.
At the heart of the system is a WiFi/Bluetooth-enabled Overo AirSTORM-Y computer-on-module.
This kit includes:
- Alto35 expansion board
- Overo AirSTORM-Y COM
- 3.5" touch TFT LCD display
- USB Cable (mini-B to standard-A)
- USB Cable (mini-B to mini-A)
- 5V USB power adapter with cable
- Yocto Linux system microSD card
Included Components | ||
Alto35 Expansion Board | This expansion board, built by Geppetto, uses our new line of 3.5" displays from In Touch, and includes accelerometer, audio jacks, RC Servo connections, LED's and pushbuttons. |
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3.5 inch In Touch TFT LCD with touch screen | 3.5 inch In Touch TFT LCD with touch screen |
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5V US Power Adapter | 5V power adapter for use in North America. |
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Overo System Card (Yocto 8GB) | 8GB microSD card flashed with Yocto build Linux image |
Accelerometer | 3D Accelerometer |
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Family | Gumstix |
Bluetooth | Bluetooth 4.1 + BLE |
Board-To-Board Connector | 2 x 70-pin AVX connectors |
Camera Connector | 27-Pin (OMAP ISP) |
Flash Memory (NAND) | 512 |
Width | 17 mm |
LCD | LCD Capable |
LCD Manufacturer | Compatible with InTouch Displays |
LCD Size | 3.5 inch |
LCD Touchscreen | Resistive Touch Ready |
Length | 58 mm |
Performance | Up to 2,000 Dhrystone MIPS |
Power | Powered via expansion board (Overo series or custom) connected to dual 70-pin connectors |
Power Management | Texas Instruments TPS65950 |
Processor | Texas Instruments Sitara AM3703 |
Processor Architecture | ARM Cortex-A8 |
Processor Base Clock | 1 GHz (Recommended @ 800MHz) |
Processor Cores | Single Core |
Processor Max Clock | 1 GHz |
Product Family | Overo |
RAM | 512 MB LPDDR (PoP) |
Storage Expansion | via microSD Card Slot |
USB Console Port | Included |
USB Device | 1 x USB Mini-B (client mode only) |
WiFi | 802.11b/g/n |
Key Components | ||
RC Servo Connector | This 3-pin header allows an RC servo to be connected to the expansion board. |
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Texas Instruments TPS62111 Step-Down Converter | A low-noise synchronous step-down DC-DC converter. Component Max Vin: 17V, 1.5A. |
Specs |
FTDI FT232RQ USB UART Interface | Connect to an RS232 serial terminal over USB with the FTDI FT232RQ interface |
Specs |
ST LIS33DE 3-Axis Nano Accelerometer | An ultra-compact, low-power three-axis linear accelerometer providing signals over I²C. |
Specs |
U.FL Antenna with Collar | U.FL antenna with collar for Bluetooth and/or 802.11b/g/n wireless communications. |
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microSD Card Slot | An onboard card-slot for system storage expansion using microSD cards. |
Specs |
Texas Instruments TPS65950 Power Management | The TPS65950 device is a highly integrated power-management integrated circuit (IC) that supports the power and peripheral requirements of the OMAP3-driven Overo series COMs. |
Specs |
Micron 256MB DDR LPDRAM & 512MB NAND Flash Memory | Package-on-package (PoP) memory solution that minimizes power consumption, maximizes board space and increases speed. |
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Texas Instruments AM3703 Applications Processor | 1GHz ARM Cortex-A8 Sitara AM3703 high-performance microprocessor designed to provide best in class ARM and graphics performance while delivering low power consumption. According to Texas Instruments, AM3703 is fully backward compatible with previous OMAP™ processors. |
Specs |
Mating Connectors | ||
70-Pin AVX Connectors (Female – Overo Expansion) | Connect an Overo COM to an expansion board with these 70-pin AVX connectors. |
Specs |
U.FL Connector | Attach a U.FL Wi-Fi or Bluetooth antenna (not included) to a Gumstix system with this connector. |
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Hirose 27-Pin Camera Connector (Overo COMs) | Connect a Caspa camera to an Overo COM with this connector (Hirose FH26-27S-0.3SHW) |
Specs |
70-Pin AVX Connector (Male – Overo COMs) | Connect your Gumstix Overo COM to an expansion board with these 70-pin AVX connectors. |
Specs |
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: