A wireless outdoor air quality monitoring board with environmental and particulate sensors and a microphone, with aRaspberry Pi Pico W built-in!

Enviro Urban is an all-in-one board for checking up on all the airborne nasties that can occur in built-up areas. There’s a BME280 sensor for measuringtemperature, humidity, and pressure,amicrophonefornoise monitoring and a pre-installedPMS5003Iparticulate sensor.Particulate matter is made up of tiny particles that are a mix of sizes and types, like dust, pollen, mould spores, smoke particles, organic particles and metal ions, and more. Particulates are much of what we think of as air pollution.

Accumulatedata in a database (we like InfluxDB) tocampaign for cleaner air in your area, or use the wireless capabilities of the Raspberry Pi Pico W to contribute to citizen science projects likesensor.community.

Enviro x Pico W Aboard

Our new Enviro (Pico W Aboard) range is designed withenvironmental monitoring/loggingin mind. We wanted to make a range of Pico/RP2040-powered, all-in-one sensor boardsthat are compact, easy to install in places and straightforward to program.The wireless capability of Raspberry Pi Pico Wlets Enviro integrate withother systems – so youcould post your data into databases, home automation systems, or online citizen science efforts – the Internet’s your lobster!

Because the least fun thing about adding lots of sensors to your environment is figuring out how to supply power to everything without tons of trailing wires, they are all designed to work well offbattery power. Each Enviro board has an onboard RTC (Real Time Clock) so that they can periodically wake up from deep sleep, take a reading (and, optionally, connect to wifi) and then go back to sleep – giving you months of untethered battery life.

We’ve also put together some handy accessory kits to go with our Enviro boards, that include an appropriately sized AA or AAA battery pack, a USB cable and otheressentials for each board, so you can get going super quick.

Enviro Features

• Raspberry Pi Pico W Aboard
• Dual Arm Cortex M0+ running at up to 133Mhz with 264kB of SRAM
• 2MB of QSPI flash supporting XiP
• Powered and programmable by USB micro-B
• 2.4GHz wireless
• Deep sleep/wake function using RTC
• 1xPOKE (user) button
• Reset button (because we’re not monsters)
• Battery connector (JST-PH connector, 5.5V max voltage)
• User/activity LED (dimmable via PWM, can only be lit when the board is awake)
• Warn LED (attached to RTC)
• Qw/ST (Qwiic/STEMMA QT)connector for attaching breakouts
• Fully assembled
• No soldering required
• Enviro firmware
• Schematic (coming soon)

EnviroUrban Features

• BME280 temperature, pressure, humidity sensor (datasheet)
• MEMS microphone (datasheet)
• PMSA003I particulate matter sensor (datasheet)

Enviro Urban+ Accessory Kit Includes

• EnviroUrban
• Weatherproof cover/Stevenson screen
• 3x AA battery pack
• 3 x AA batteries
• USB micro-B cable
• Velcro for attaching the battery pack

Software

Enviroships with some super slick provisioning software that makes it really easy to set it up and connect to things, even if it’s your first foray into environmental logging/IoT.Power it up and connect to the network called ‘EnviroUrban Setup’ with your phone, tablet or other wi-fi enabled device – your Pico W will walk you through the rest!

• Getting Started Guide

Connecting Breakouts

The Qw/ST connectors onEnviro boards make it super easy to connect up I2CQwiicorSTEMMA QTbreakouts.If your breakout has a QW/ST connector on board, you can plug it straight in with aJST-SH to JST-SH cable.

Breakout Garden breakoutsthat don’t have aQw/ST connector can be connectedusing aJST-SH to JST-SH cableplus aQw/ST to Breakout Garden adaptor. Want to usemultiple breakouts at the same time? Trythis adaptor!

• List of breakoutscurrently compatible with our C++/MicroPython build.
• Enviro and InfluxDB/Grafana
• Getting Started with Enviro (Pico W Aboard)

Notes

• Measurements:69 x 36 mm (L x W, approx)
• Enviro boards can enter adeep sleep mode where the Pico W, onboard sensors and sensors connected via Qw/ST are completely powered down. The only thing left running on the board is the RTC which can wake up the board again at a set date and time or on a timer. You can also wake up the board via the POKE button, or by connecting the USB cable (the board will never sleep if connected to USB power). Power consumption when asleep is 20uA.
• TheRTCcan also be used to keep track of the time and date (which means we don’t need to waste power bymaking a wireless callto find out the time/dateeach time we log a sensor reading!)
• TheWarn LEDis connected to the RTC, so it can be lit even during deep sleep to notify you of problems. It is limited to three states – on, off, or 1hz blink (it’s not possible to control the brightness).
• We’d recommend using a3 x AA battery packwith Enviro Urban as the particulate sensor uses quite a lot of power. Any battery pack that can supply between 2V and 5.5V will (work though – 2 or 3 alkaline AA or AAA cells, 4 rechargeable NiMH cells or a single cell LiPo. If you’re using a LiPo, bear in mind there’s no battery charging included on Enviro boards, so you’ll need a separate LiPo battery charger (like aLiPo Amigo) to be able to charge it.

About Pico W Aboard

Our new Pico W Aboard productscome with abuilt-in Raspberry Pi Pico W. This means you get all the advantages of an RP2040 microcontroller – a speedy fast dual-core ARM processor, a dynamic, growing ecosystem and a choice of different programming methods to experiment with. Most excitingly though, Pico W haswireless connectivity, so your Pico/RP2040 devices can communicate with each other, and the internet!

Wireless is very new to Pico/RP2040 – be aware that things will move fast and change! Software support (wireless examples, tutorials, CircuitPython support etc)will take a little while to catch up. If you’re an absolute beginner to Pico/RP2040, you might have a better experience with wireless if you wait until everything is a little more settled.