MSP430FR4133 Microcontroller Air Quality Sensor Reference Design


Design files


In this reference design, a simple air quality monitor is created and implemented using the particulate matter 2.5 level. This design uses MSP430FR4133 microcontroller (MCU) and Sharp™ DN7C3CA006 PM2.5 sensor. This ultra-low-power centric design of the MSP430™ MCU coupled with DN7C3CA006's integrated analog works in tandem to capture air samples and calculate the air quality index (AQI). From periodic PM2.5 samples, the AQI is calculated and displayed using an 8-character, 14-segment LCD.

  • Calculates PM2.5 concentration levels and AQI levels
  • Calculates temperature and humidity levels
  • Offers an 8-character, 14-segment LCD to display calculation results
  • Uses an ultra-low-power MSP430FR4133 MCU with an integrated LCD controller
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


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Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430FR413316 MHz MCU with 16KB FRAM, 2KB SRAM, 10-bit ADC, LCD, UART/SPI/I2C, IR logic, timer

Data sheet: PDF | HTML
Buck-boost, inverting & split-rail converters (integrated switch)

TPS63031High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

Data sheet: PDF | HTML
Humidity sensors

HDC1000Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS71550-mA 24-V ultra-low-IQ low-dropout (LDO) voltage regulator

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* User guide Air Quality Sensor Design Guide (Rev. A) Feb. 23, 2016
Technical article Trends in building automation: connected sensors in safety and security Jul. 20, 2016

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