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H10 - Extremely low-power energy harvesting LoRa radio module

This new module designed by Acme Systems enables the creation of a new range of battery-free solar-powered radio sensors with unprecedented features

The H10 module includes all the circuitries requested to:

  • Harvest energy from ambient light using a small solar panel
  • Store this energy in a small hybrid supercap
  • Manage multiple low-power sensors using different data buses
  • Save the data collected from sensors
  • Send and receive data via Lora Radio protocol in ISM band

Power consumption

  • Stand-by-mode: 1.3 µA @3.3 volt (4.29 µW)
  • Transmit-mode: 20 mA @3.3 volt (66 mW)

An original power circuitry is able to charge the supercap with less than 50 LUX avoiding any power loss in no-light conditions.

All the parts requested to build a complete solar powered radio sensor will be available on the e-shop of this website:

The application examples and drivers are released under Open Source licence and is based on RIOT the friendly Operating System for the Internet of Things

A complete set of software examples and articles are provided to show how to the system works.

The policy for transmission intervals is completely customizable by the user from the gateway side.

Automatic transmission power reduction of the sensor nodes based on reception signal strength further enhances their capacity of reliably operating in environments with extended periods of no light conditions.

The nodes have the capacity to continue transmitting for weeks in reduced or no light conditions by automatically reducing the number of messages transmitted per hour. The supercapacitor can be fully recharged after just 15 minutes of outdoor light exposition.

Documentation Buy

Hardware features

  • CPU: Microchip SAM R35 ultra-low power LoRa® Sub-GHz SiP
    • ARM Cortex -M0+ CPU running at up to 48 MHz
    • UHF transceiver supports LoRa® and FSK modulation.
    • 64KB, 128KB or 256KB of Flash memory
    • 40 KB of SRAM
  • Optional 2KB o 8KB of zero power ferroelectric RAM
  • Optional Microchip ATECC608B crypto chip
  • Optional Humidity and Temperature sensor
  • Optional Metallic shield
  • Optional I-PEX micro RF coaxial antenna connector
  • Operating temperature range: -25℃ to +70℃
  • SMT device: 40x27 (2.5mm height over carrier board)
  • 48 pads pitch: 1.27 mm (50 mils)
  • Three available Flexcom ports that can be set as I2C, serial or SPI to talk with external sensors
  • Hardware power management with automatic detachment of charger and load
  • Availability of a range of ready-to-use very low power sensors for different applications
  • Weight: 3g

Software features

  • Open source RIOT operating system for IoT devices


Part numbering information

Related products


Features Index Buy

Energy harvesting LoRa module for battery-free custom applications.
  • CPU Microchip SAM R3x ultra-low power LoRa® Sub-GHz SiP
  • ARM Cortex-M0
  • Battery-free design
  • Solar energy harvesting circuitry for indoor and outdoor applications
  • Open source firmware based on RIOT the Real Time Operating System for IoT

Features Index Buy

Battery-free energy harvesting solar powered LoRa sensor
  • Low power consumption:
    Stand-by mode 4.29 µW
    Transmit mode 66 mW
  • Energy harvesting from in-door ambient light (Just 50 lux)
  • Energy storage based on hybrid supercap
  • Open source RIOT OS
  • Ready for LoRa and LoRaWan

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