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    harvestKIT

    Endless Battery Life

    Ambiq harvestKIT® is a versatile energy harvesting reference design platform that extends battery life by drawing energy from the environment or eliminates the need for batteries entirely by incorporating super capacitors and other energy storage elements. Built around an Apollo3 Blue SoC with Ambiq’s SPOT® platform, harvestKIT® pairs Bluetooth® connectivity with two mikroBUS™ energy-harvesting sockets for rapid customization across smart home, remote monitoring, wearable, asset-tracking, and factory automation applications that demand years of maintenance-free operation.

    Where to Buy
    Design Resources

    harvestKIT Highlights

    01

    SPOT Advantage

    At the core of harvestKIT is the Apollo3 Blue SoC, which utilizes Ambiq’s patented sub-threshold power optimized technology (SPOT®) to deliver high energy efficiency and processing power for endpoint devices.

    02

    Intelligence Edge Device

    Significant compute cycles and on-chip memory capacity are available to run AI, ML, and Deep Learning algorithms that process the sensor data on-device.

    03

    BLE Connectivity

    The integrated Bluetooth® Low Energy (BLE) 5 radio relays data to host providing superior RF throughput and leaving plenty of resources available for user applications.

    04

    Versatility and Customization

    The kit supports a wide range of modules through its four mikroBUS™; sockets, allowing for easy expansion and customization.

    Applications

    Smart Homes & Buildings
    Power always-on sensing and automation.

    Remote Monitoring
    Enable long-lasting sensing in remote locations.

    Gaming Controllers
    Reduce charging and battery replacements.

    Wearables
    Extend runtime for compact, always-on devices.

    Asset Trackers
    Support long-lasting tracking and monitoring.

    Factory Automation
    Power intelligent sensing at the edge.

    harvestKIT Applications 2

    Specifications

    Apollo3 Blue SOC

    • Arm® Cortex®-M4F @ 96MHz
    • 1MB Flash, 384KB SRAM
    • Secure Upgrade (OTA)
    • Bluetooth Low Energy 5 integrated radio
    • 8mm x 8mm , 64-pin QFN with 38 GPIO

    Artasie Real-Time Clock – AM1805

    • RTC companion for external MCU
    • Time/Date accuracy as low as 2ppm using 32KHz crystal
    • On-chip RC option drops current as low as 14nA
    • FET Power Switch control eliminates MCU Deep Sleep current
    • 256B RAM saves MCU state and/or last sensor data (backed up by solid state battery)
    • 3mm x 3mm , 16-pin QFN with 4 GPIO

    2 pc 1.8 V/3.3 V mikroBUS click module sockets

    • 1 pc TDK ICM-45605 ultra high-performance 6‑axis MEMS motion sensor
    • 1 pc Bosch BME688 4-in-1 environmental sensor (pressure, humidity, temperature, and gas scanning)

    2 pc energy harvesting mikroBUS sockets with 2-pin power + GND input header

    • 1 pc Nexperia NEH2000BY energy harvesting PMIC click module with Panasonic solar cell
    • One available expansion socket for a 2nd harvesting PMIC or any other click module

    Energy storage

    • Eaton HSL1225 120 farad hybrid super-cap (charged by harvesting sockets M4 and M3, or optionally via USB-C® connector)
    • ITEN ITXQFN15A 150 µAh 2.5 V solid state battery (charged by RTC, used for RTC RAM backup)

    Timing Components

    • SiTime SiT11100 ultra-small 0505 size 32 MHz MEMS resonator, 0.46 x 0.46 CSP (for MCU BLE radio)
    • Epson FC1610BN small size, low ESR 32.768 kHz crystal, 1. 6 mm x 1.0 mm (for RTC and MCU)

    Where to Buy

    HarvestKit board Angle view

    AMA3BHARV1

    harvestKIT Energy Harvesting Reference Design
    HarvestBoard Top view

    AMA3BHARV2

    harvestBOARD Energy Harvesting Reference Design

    Design Resources

    Browse our Design Resources which includes product briefs, datasheets, selector guides, family brochures, white papers, quick start guides, and more to help you learn more about products.

    Additional Documentation

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    Frequently Asked Questions (FAQ)

    • harvestKIT® is Ambiq’s energy harvesting reference design platform that extends battery life by drawing power from the environment, or eliminates batteries entirely using super capacitors and other energy storage elements. 

    • Yes. harvestKIT includes Bluetooth® Low Energy connectivity for wireless communication in battery-free or battery-extended designs. 

    • It includes two 1.8V/3.3V mikroBUS™ click module sockets and two dedicated energy-harvesting mikroBUS sockets, letting developers swap in different sensors and harvesting sources without redesigning the board. 

    • The platform is designed to work with super capacitors and other energy storage elements (including solid-state batteries) instead of, or alongside, traditional batteries. 

    • Smart home and building devices, remote monitoring, wearables, asset trackers, factory automation, and video game controllers — any application that benefits from reduced or eliminated battery maintenance. 

    • The reference design has been demonstrated with components including a TDK ICM-45605 motion sensor, a Bosch BME688 environmental sensor, a Nexperia energy-harvesting PMIC, and an Artasie AM1805 real-time clock. 

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