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")

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:


3D Accelerometer


Bluetooth 4.1 + BLE

Board-To-Board Connector

2 x 70-pin AVX connectors

Camera Connector

27-Pin (OMAP ISP)

Flash Memory (NAND)



17 mm


LCD Capable

LCD Manufacturer

Compatible with InTouch Displays

LCD Size

3.5 inch

LCD Touchscreen

Resistive Touch Ready


58 mm


Up to 2,000 Dhrystone MIPS


Powered via expansion board (Overo series or custom) connected to dual 70-pin connectors

Power Management

Texas Instruments TPS65950


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



512 MB LPDDR (PoP)

Storage Expansion

via microSD Card Slot

USB Console Port


USB Device

1 x USB Mini-B (client mode only)



Key Components
RC Servo Connector This 3-pin header allows an RC servo to be connected to the expansion board.
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.
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 512MB DDR LPDRAM & 512MB NAND Flash Memory Package-on-package (PoP) memory solution that minimizes power consumption, maximizes board space and increases speed.
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.
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