Note:  There is a new version of SmartBug available. You can learn more about it here.

SmartBug™: The All-in-One Sensor & Algorithm Module for Your IoT Applications

TDK SmartBug (MD-42688-P) is a multi-sensor wireless module that leverages TDK’s MEMS sensors and algorithms for a wide range of IoT applications.

This module combines six sensors, a powerful wireless (BLE) MCU, seven algorithm driven features and a rechargeable battery, in a small enclosure. It also comes with the option of an Add-On board that includes a WiFi module, an SD card slot and an ultrasonic sensor from TDK.

Featured Video: TDK SmartBug™ Tech Explainer

Sensors Inside

Motion Sensor

6-Axis IMU featuring an accelerometer and gyroscope.

Pressure Sensor

Barometric pressure sensor for precise atmospheric readings.

Ultrasonic Sensor

MEMS based Ultrasonic Time-of-Flight sensor for distance measurements.

Temperature Sensor

Temperature sensor for understanding the operating conditions.


MEMS Magnetometer determines heading & magnetic anomalies.

Humidity Sensor

Humidity sensor for monitoring the relative humidity.


SmartBug Device

Add-On Board

Windows 10 Application


The go-to module for quick and easy access to reliable and smart sensor data. It's the perfect enabler for IoT product developers, algorithm developers, and sensor data enthusiasts to better understand real application signatures, environment variations, and multi-sensor/algorithm behaviors.


The ultimate add-on to the ultimate all-in-one. Packing not only WiFi and SD card support to help you transmit and store your SmartBug data, but also includes the industry-first MEMS-based Ultrasonic Time-of-Flight Range Sensor, the Chirp Microsystems CH101.


All sensor data and output can be visualized, streamed and recorded on the SmartBug Windows 10 Application. The Windows 10 work environment provides a secure, familiar, and powerful eco-system to analyze and collect data from your SmartBug.

Key Features

Out-of-Box solution:

No soldering, programming or any mechanical changes required. It is a pre-programmed module that facilitates quick access to meaningful sensor data, wirelessly.

Dedicated source of Sensor Data (both raw and intelligent data):

Intelligent Outputs: Quaternions, Yaw, Pitch, roll, differential pressure output, smart door lock open/close outputs, asset monitoring events, APEX IMU outputs, Air Mouse outputs and Range/Distance data.

Raw sensor outputs: Accelerometer, gyroscope, Magnetometer, Pressure sensor, temperature sensor, humidity sensor and ultrasonic ToF sensor.


Stick the module on “anything” you want to analyze remotely and accurately for IoT applications. Small Size (36.6 x 50 x 18 mm), flat base and wireless connectivity enables effective IoT application analysis.

Reliable and Good quality data:

Each IoT application today requires trusted and intelligent sensor data to make critical product development decisions. SmartBug meets this key requirement by leveraging data from its highest-performance sensors and algorithms.


Smart Home

Smart Appliances

Smart Healthcare

Smart Logistics

Smart TV

Collect smart sensor data from Smart Home applications such as a smart door lock, smart window lock or HVAC filter.

Stick the SmartBug on home appliances such as Robotic Vacuum Cleaner or Smart Washing Machine and start gathering smart appliance data.

Monitor patient movement, taking advantage of the data visualization tools and sensor fusion for accurate analysis.

Use the motion, pressure, magnetometer, temperature and humidity sensors for monitoring the condition of an asset.

Get the most out of the data gathered by the 6-Axis IMU and the Air Mouse feature to map the movement of an Air Mouse or Smart TV remote accurately in 2D space.

This is a small sample of applications and solutions made possible by SmartBug, but it's just the tip of the iceberg of all possibilities that can help you solve some of IoT's biggest challenges. We hope it will inspire your imagination to create the next must-have gadget, tool, or product. Purchase now and get started with the most valuable, versatile, multi-sensor module!

Additional Features

Included Hardware Devices








6-Axis Motion Sensor

Barometric Pressure Sensor

Ultrasonic Time-Of-Flight Range Sensor

High Precision Tri-axis Magnetic Sensor

Digital Humidity and Temperature Sensor

Advanced Bluetooth 5 SOC with ARM® Cortex™-M4 CPU

32-bit MCU & 2.4 GHz Wi-Fi

Software Features & Benefits

The software features of the module can be accessed from the SmartBug Windows 10 Application. Each feature offers both output visualization and data logging from multiple sensors and algorithms:

  • Sensor Data: Raw sensor data streaming and logging with configurable FSR and ODR.
  • Sensor Fusion: Detects orientation accurately with 6-axis and 9-axis sensor fusion using advanced calibration. Enables logging Quaternion, Yaw, pitch and roll outputs.
  • Smart Door Lock: 6-axis IMU detects if door is in open or close state (< 3-degree accuracy). Enables logging angle output and open/close states.
  • Asset Monitoring: 6-axis IMU, pressure, magnetometer, temperature and humidity sensor monitor the condition of an asset with configurable thresholds and provide event outputs such as Freefall, Shock, Magnetic Change etc. Enables logging event history.
  • HVAC filter Monitoring: Two Pressure sensors accurately measure the ΔPressure and show alerts based on ΔP thresholds. Enables logging of differential pressure data.
  • Air Mouse: 6-axis IMU maps the movement of an Air Mouse.
  • APEX Outputs: 6-axis IMU provides Tap, Tilt, Raise to Wake, Pedometer, WOM outputs.
  • Over the Air (OTA) Firmware upgrade: Upgrade the firmware on the SmartBug using the OTA FW upgrade feature available on the SmartBug Application.
  • Multiple Options for Data Acquisition: Bluetooth Low Energy (BLE), USB, WiFi, SD Card


Best of Sensors Award 2020

Data Acquisition & Analytics Category


We are happy to announce that our SmartBug has been chosen as a FINALIST in the DATA ACQUISITION & ANALYTICS category for the Best of Sensors Award 2020. Congratulations to the team who has worked hard on making this product possible.

    If you would like more information about SmartBug, please fill out the information below and we will get back to you as soon as we can.