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EBV IoT – SmartCTherm Solution

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New EBV IoT SmartCTherm solution, powered by Renesas and Sequans

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EBV IoT - SmartCTherm solution - Smart Connected Thermostat - Why EBV-IoT SmartCTherm - Mixed Media

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Why EBV-IoT SmartCTherm?

SmartCTherm is a smart IoT sensor node solution that can monitor indoor climate conditions, including temperature, humidity, indoor air quality, and the presence of Total Volatile Organic Compounds (TVOC), and send the collected data to the Cloud. It is designed around the following three key points:

Everywhere: One of its key features is its ability to connect to the Cloud - from everywhere. This is possible thanks to the Monarch GM01Q, an all-in-one, single-mode LTE-M and NB-IoT modem with worldwide deployment and roaming capability..

Bring value: By utilizing the advanced RA6M3 MCU from the highly-acclaimed Renesas' RA family optimized for IoT applications, SmartCTherm is well capable of processing the raw data on its own. With enough horsepower to perform the most demanding tasks, this Arm® Cortex®-M4 based MCU platform can be used not only to collect raw data, but also to perform different kinds of complex data analysis.

Visualize: Humans, as mostly visual beings, process visual data representation much more efficiently. For this reason, appealing GUIs become more and more in demand. Combining a sizeable capacitive-touch display and the powerful RA6M3 MCU, SmartCTherm delivers a very crisp and fluid visual experience for the best user experience.

SmartCTherm IoT is also a project that includes a full suite of services such as technical support, on-demand workshop and demonstration, training, and partnership. It is a full-fledged IoT solution, aimed at the broadest range of IoT designers and developers. Feel free to contact our Smart Sensing & Connectivity experts for further support.


EBV IoT - SmartCTherm solution - Smart Connected Thermostat - Target Applications - Mixed Media

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Target Applications

  • Smart connected thermostat
  • Remote monitoring
  • Smart home
  • Alarms
  • Smart city
  • Predictive maintenance
  • EV charging

EBV - Renesas SmartCTherm Solution - Form Static HTML

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Register now for the chance to win a Renesas RA6M3 & Sequans GM01Q connectivity evaluation bundle!



EBV IoT - SmartCTherm solution - Smart Connected Thermostat - Tabs

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Smart Connected Thermostat - The bundleSmart Connected Thermostat – The bundle

The hardware architecture of the SmartCTherm IoT sensor node is a two-part solution. It is comprised of the following components:

  • EBV-IoT Sequans GM01Q Connectivity Shield, based on the Sequans GM01Q
  • EK-RA6M3G evaluation and development kit from Renesas


EBV-IoT Sequans GM01Q Connectivity Shield

EBV-IoT Sequans GM01Q Connectivity Shield features the Sequans Monarch GM01Q LTE-M and NB-IoT LPWA module with worldwide deployment and roaming capability, based on their highly-acclaimed Monarch LTE platform. In addition to the GM01Q module, the shield also incorporates two environmental sensors from Renesas: the HS3001 digital relative humidity (RH) & temperature sensor, and the ZMOD4410 Metal Oxide (MOX)-based gas sensor for indoor air quality (IAQ) monitoring and total volatile organic compounds (TVOC) detection. The EBV-IoT connectivity shield comes equipped with the ATECC608A Secure Element (SE) from Microchip, offering a robust and resilient hardware basis for implementing top-tier security features.
EBV-IoT Sequans GM01Q Connectivity Shield offers a broad range of wired connectivity options, including a Micro USB port, PMOD extension connector, and SEEED connector with additional I2C lines (to name a few). Standard Arduino UNO (stackable) headers provide easy connectivity to a wide range of development and evaluation kits based on this widely accepted standard.

Key Features:

  • Based on Sequans Monarch GM01Q LTE modem
  • Supports LTE Cat M and NB-IoT technologies
  • Provides seamless connectivity experience
  • Equipped with basic environmental sensors



The EK-RA6M3G evaluation kit features the RA6M3 advanced microcontroller (MCU), based on a 32-bit Arm® Cortex®-M4 core, running up to 120 MHz. The RA6 family is optimized for next-generation IoT applications, and it is supported by Renesas' highly-acclaimed e2 Studio IDE, Flexible Software Package (FSP) running on FreeRTOS®, and a comprehensive RA Partner ecosystem, providing a broad range of ready-made building blocks that work seamlessly across the entire RA family. The RA MCUs family delivers unparalleled ease of use and flexibility while reducing time to market.

The EK-RA6M3G evaluation kit also features an Arduino UNO pinout-compatible extension (among many other connectivity options), allowing seamless integration with the EBV-IoT connectivity shield. On top of that, each pin of the MCU is accessible via standard 2.54 mm (1 inch) double-row connectors, allowing peripherals such as the TFT screen with the capacitive touch panel to be integrated very easily.

Key Features:

  • Based on Arm® Cortex®-M4 core
  • An extensive set of examples
  • A long list of peripherals
  • e2 Studio - Eclipse-based toolchain
  • AppWizard - Seamless GUI design experience


Hardware system overview


Renesas EK-RA6M3 + EBV-IoT Sequans GM01Q connectivity shield

Renesas EK-RA6M3 + EBV-IoT Sequans GM01Q connectivity shield


Introducing 32-bit Renesas RA Family

High performance, high security, broad connectivity an wide line-up

Introducing 32-bit Renesas RA Family


HS300x – Digital Relative Humidity & Temperature Sensors

HS300x - Digital Relative Humidity & Temperature Sensors


  • Silicon carbide structure
  • ±1.5%RH, ±0.2°C accuracy (HS3001)
  • ±3.8%RH, ±0.3°C accuracy (HS3004)
  • Fast RH response time (Typ. 6 seconds)
  • 0.1%RH/Yr drift
  • 14-bit resolution: 0.01%RH (Typ.)
  • Low power consumption: 1.0µA average
  • Digital/Analog output
  • Extended supply voltage: 1.8V to 5.5V
  • 3.0 × 2.41 × 0.8 mm LGA
  • Product family approach for varied accuracy levels


  • Integrated temperature and humidity sensing solution
  • Small form factor solution with lower system cost
  • Low power consumption saves battery
  • 14-bit high resolution provides extremely tight accuracy  
  • Insensitive to environmental contaminants like dirt and dust
  • Small size solution saves space & BOM for compact designs
  • On board calibration reduces time to market
  • Wide supply voltage range eliminates the need for LDO/DC-DC

Key applications:

  • White goods
  • Weather stations & Dew point temperature
  • HVAC and air control systems
  • Portable and battery operated



Relative humidity



±1.5%RH (Typical), 3.0 × 2.41 × 0.8mm, 6-LGA

-40°C to +125°C


±1.8%RH (Typical), 3.0 × 2.41 × 0.8mm, 6-LGA

-40°C to +125°C


±2.8%RH (Typical), 3.0 × 2.41 × 0.8mm, 6-LGA

-40°C to +125°C


±3.8%RH (Typical), 3.0 × 2.41 × 0.8 mm, 6-LGA

-40°C to +125°C


ZMOD4410 – Metal Oxide Gas Sensor for TVOC Detection





  • Proven MOx material
  • Calibration with gas
  • Flexible architecture
  • Correlates German committee on indoor air quality guidelines (UBA study)
  • Miniature package 3 x 3 x 0.7 mm
  • Power consumption of <14 mW in continuous operation
  • Digital (I2C) output


  • Leading high sensitivity and long term stability
  • Part-to-part consistency
  • Calibrated sensor allows easy and fast system integration
  • Enables customers to release additional product families via s/w changes
  • International accepted definition of Indoor Air Quality (IAQ)
  • Reduced end product size
  • HVAC systems
  • Air purifiers
  • Smart thermostats
  • Smart speakers
  • Bathroom fans
  • Kitchen exhaust hoods
  • Smart outlets and receptacles



Highly Sensitive and Reliable Indoor Air Quality Detection


  • Block Diagram
  • Silicon-based Digital Gas Sensor Platform
  • Small Package Size 3 x 3 mm



Sequans Monarch-based GM01Q – LTE Cat M1

Sequans Monarch-based GM01Q – LTE Cat M1Single-mode LTE Category M1/NB1 IoT Connectivity Solution for Worldwide Use

GM01Q main features

  • 3GPP Release 13 & 14
  • UE Cat M1
  • World-wide band support in a Single SKU™ design
  • Lowest power consumption with 1μA PSM
  • eco-Paging™ for optimized eDRX
  • Power class options 20 and 23dBm
  • IoT-Select™ optimized network selection LTE-M/NB-IoT
  • VoLTE support
  • On-modem location based services



  • JTAG
  • I2C (rsvd)
  • USIM
  • SPI (rsvd)
  • GPIO
  • UART x 3


  • Field proven LTE software stack
  • Sequans owned LPP, SUPL, and
    certified LWM2M stack
  • Cloud Connector™ for direct
    HTTPS, MQTTS and for various
    cloud platforms (Verizon
    Thingspace, Orange Live
    Objects, AWS…)


 RF Frequency

  • Worldwide Single SKU™ design
  • 699 – 2700MHz (incl. Bands
  • 17,18,19,20,25,26,28,66,85)



  • Cf module certification roadmap


  • LGA package
  • 20.25 x 21.35mm
  • 108 pads
  • RoHS compliant, halogen-free


 Operating Supply

  • Voltage 3.1 – 4.5V
  • Current 1μA in PSM


  • 5% to 85%


 Operating Temperature

  • RF compliant -30°C to +60°C
  • Operational -40°C to +85°C


The RA6M3 MCU is a mid-high tier of Renesas MCUs optimized for IoT applications. It features a large amount of memory, high performances, a rich set of peripherals, and more. However, its main advantage is enabling a very advanced, yet easy to use development ecosystem from Renesas.

The Renesas RA family of MCUs is supported by the Flexible Software Package (FSP) that provides a suite of production-ready peripheral libraries, drivers, and software stacks (Ethernet, USB, file system), allowing to take the full advantage of the RA Partner Ecosystem. RA Partner Ecosystem incorporates more than 50 different suppliers, delivering ready-made software and hardware building blocks that work seamlessly across the entire RA Family of MCUs. This powerful suite of tools provides a comprehensive, integrated framework for the rapid development of complex embedded applications.

AppWizard is a Graphical User Interface (GUI) creation tool from SEGGER. It utilizes Renesas' FSP and its support for SEGGER's graphical libraries (emWin) to provide a seamless GUI development experience. It is a graphical point-and-click environment that allows creating all the GUI elements very quickly and intuitively. All the parameters can be fully customized, including screen resolution, color depth, and various other parameters. The preview function is also available, allowing designers to test GUI before uploading the code to the actual hardware. The AppWizard seamlessly integrates with the powerful Renesas Synergy e2 studio Integrated Solution Development Environment (ISDE), complementing it with a versatile GUI creation tool.

Software Architecture

The software architecture on the SmartCTherm IoT is quite straightforward. There are several threads running in parallel under AWS FreeRTOS®, providing quick and responsive interface. The diagram below clearly illustrates the generic software architecture that is very easy to build using ready-made solutions provided by Renesas:


Generic SW architecture

Image of  Generic SW architecture


Flexible Software Package - FSP

Supported by full arm ecosystem

  • Value Proposition
    • High performance/highly efficient drivers
    • Middleware to ease implementation of communications & security, CMSIS RTOS compliant
    • Open software ecosystem, Flexible use of legacy code
    • Collaboration with Third Parties


Image of  Flexible Software Package - FSP

The SmartCTherm relies on using MQTT messaging protocol designed for lightweight M2M communications, which runs on top of the TCP (or UDP) layer. The MQTT is a pub/sub-based protocol and can use TLS security and user/password protection to control access to resources. The MQTT (and the MQTTS, its more secure variant) are widely accepted protocols by many Cloud service providers. Currently the SmartCTherm IoT node is preconfigured to connect to the Cayenne Cloud service. However, with minor tweaking of the connection parameters, it can connect to virtually any MQTT-enabled cloud, including very advanced Cloud platforms such as MS Azure, AWS, or - Avnet IoTConnect.

Avnet IoTConnect is an enterprise-ready IoT platform which allows to build, deploy, and manage connected assets more efficiently and intuitively than ever before. Find out more about the Avnet IoTConnect on this LINK


Avnet IoTConnect – Simplify with one enterprise platform

Provide your teams one platform for collaborative development to accelerate deployment of ready-made solutions that can be customized to solve your business challenge.

Image of  Avnet IoTConnect – Simplify with one enterprise platform

If you are interested in further information, please follow the links below:

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EBV - IoT Smart Therm - Blog article Grid Box Light (GBL)

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Blog article

Read more about this topic in our blog article!

EBV IoT – SmartCTherm Solution | EBV Elektronik

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EBV IoT – SmartCTherm solution, powered by Renesas RA MCU & Sequans GM01Q cellular modem

27 Oct 2020 - 27 Oct 2020
Online, On Demand

IoT applications require multiple technologies to be run in parallel like a concert with multiple instruments. In the SmartCTherm solution, we will present a concert of Renesas RA MCU, Renesas environmental sensors, Sequans GM01Q modem providing cellular IoT connectivity, security and nice user experience over a graphical user interface with capacitive touch.

EBV IoT - SmartCTherm solution - IDT HS300x - Grid Box Light (GBL)

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IDT HS300x family of humidity sensors with leading accuracy

The IDT® HS300x family of relative humidity sensors feature a ±1.5% RH accuracy and six-second response time enabling customers to improve overall system performance and feedback control.

EBV IoT - SmartCTherm solution - IDT ZMOD4410 - Grid Box Light (GBL)

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IDT ZMOD4410 indoor air quality sensor

The ZMOD4410 gas sensor module is a firmware configurable platform that addresses air quality requirements in a wide range of IAQ applications.

EBV IoT - SmartCTherm solution - ATECC608A Secure Element - Grid Box Light (GBL)

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ATECC608A Secure Element

CryptoAuthentication Device.