This week's EYE ON NPI is another banger from Sensirion - who has been really rockin' out with great sensors over the last few years - it's the SEN54 Environmental Sensor Node ([ Ссылка ]), an all-in-one sensor node that combines all of the Sensirion top hits in one. This sensor looks like your everyday dust sensor - just like the SPS30 particulate sensor ([ Ссылка ]), but combines additional sensors inside!

There's a few models planned for the SEN5X series - today we're highlighting the SEN54 which has
* Particulate Matter - PM2.5
* Humidity and Temperature via SHT40 ([ Ссылка ])
* Volatile Organic Compound via SGP41 ([ Ссылка ])

(There's also a SEN55 which will include an addition NOx sensor, but it has not been released yet)

The sensor uses a sub-processor that will act as a single I2C peripheral to receive commands and send sensor data back. It's a great deal if you want a simple-to-install air quality sensor with all the goodies. There's a 3D model available for mechanical installation, and for connectivity you just need a single JST GHR 6 pin ([ Ссылка ]) cable which has power, and I2C or UART data. Note that the cable is not sold separately so you'll need to acquire the cable from a separate vendor or pick up the full evaluation kit that comes with a couple cables at additional cost. ([ Ссылка ])

The real success story here is the libraries that are pre-written and supported by Sensirion that makes getting started very very fast. We were able to wire up the SEN54 to an ESP32 board and run the BLE demo ([ Ссылка ]) within a few minutes!

Using the Sensirion MyAmbience app, ([ Ссылка ]) we could see instant data show up on our iOS or Android device. Over-all a slick and easy experience. We must say that we're really impressed with how maker-engineer friendly the sensors and firmware development is.

This all-in-one sensor board is going to be a popular environmental sensor from folks who really know environmental sensing! Digi-Key has a whole bunch of the Sensirion SEN54 sensors in stock right now for immediate shipment ([ Ссылка ]) and with same-day shipping, you can order today and be sensing by tomorrow afternoon!

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