High-precision air quality monitors are normally very expensive, but Tim Dye of Sonoma Technology is on a mission to change that. He’s been working with Michael Heimbinder and habitatmap.org to create a low-cost sensor system that when designed properly and integrated into a software platforms can provide valid data.
AirCasting is a platform for recording, mapping, and sharing health and environmental data using Arduino and Android. It combines an Arduino with a set of sensors for air quality measurement; temperature, humidity, and carbon monoxide, nitrogen dioxide, and particulate matter. The system combines the sensors using an Arduino Uno and then sends the data to an Android app using Bluetooth. The plans are all open for modification, so you can add your own sensors as needed. A heart rate monitor and an LED vest can also be linked to the AirCasting app, providing a complete the system for realtime, wearable feedback of your body’s reaction to the environmental air quality.
There are many DIY air quality measurement projects online, but most of them are not calibrated against known standards or professional equipment. But Dye and his colleagues have tested the AirCasting particulate matter sensors against the same equipment Sonoma Technology uses for precise measurement, and they’ve gotten surprisingly good results. Correctly constructed and deployed, the AirCasting shows promise as a low-cost alternative to complement the expensive high-end air monitors.
AirCasting is a collaboration between many groups: Michael Heimbinder of habitatmap.org manages the project, and Tim Dye of Sonoma Technology consults on design, data evaluation, and field deployment; Dr. Iem Heng and Raymond Yap of the City Tech Mechatronics Technology Center designed and built the hardware; Dr. Andy Zhang designed and built the monitor casings; Valentine Leung designed and built the LED garments, and Brooke Singer has helped guided the project with a mind towards interactivity and public engagement.
The data from your AirCasting air monitor can be uploaded to the AirCasting database, which aggregates data from all AirCasting contributors, or can be sent to your own database and all the code for the project is open source and available through GitHub
The website AirCasting.org provides links to all the software and hardware plans.
I’ve been waiting for…ooh, just over a year, for someone to do this. Recantha, an old hand here in the comments and on the forums, has built a tricorder.
There surely can’t be anyone here without a passing familiarity with Star Trek, but just in case: the tricorder is a made-up thing used by the crew of the Enterprise to measure stuff, store data and scout ahead remotely when exploring strange new worlds, seeking out new life and new civilisations, and all that jazz. Despite its made-up-ness, the tricorder remains a terribly desirable thing. I’ve always wanted to be able to tell whether my planet is M-class or not.
Recantha has bodged together his home-made tricorder using a Pi, some sensors (two for temperature, and one each for magnetism and distance), an LCD display, some switches, a light-resistant resistor, a thermistor and an Arduino Leonardo clone. We hope he keeps adding sensors to it, and maybe, later on, a camera board, until he runs out of space. How about a Geiger counter (this one already works with the Pi)?
Here’s a spot of video explaining what everything on the Picorder does:
(Best of all, the whole thing is cased in LEGO.)
And here’s some more video, showing the thing in action.
If you’re interested in reproducing or building on this project, Recantha’s blogged about it (he has an excellent website, all about Raspberry Pi), and has left a guide to the project over at Pideas, the new site for collecting Raspberry Pi projects. (Go and add something of your own!) Thanks very much for this, Recantha; our office costume parties will now have a dash of added realism. Jamesh has drawn the short straw and will be dressed as Nog.
Bio Circuit stems from our concern for ethical design and the creation of media-based interactions that reveal human interdependence with the environment. With each beat of the heart, Bio Circuit connects the wearer with the inner workings of their body.
It was created at Emily Carr University by Industrial Design student Dana Ramler, and MAA student Holly Schmidt and provides a form of bio feedback using data from the wearer’s heart rate to determine what “sounds” they hear through the speaker embedded in the collar of the garment. Here’s the schematic of technology:
This is an interesting implementation of Arduino and Wireless comunication. The user [priyansmurarka] posted:
Ok, so here is the basic problem statement. I need to develop a temperature sensing system such that the temperature from the sensor node is relayed to a co-ordinator sensor and then the co-ordinator node shows the user in a simple graphical form.
For the wireless communication, I used Xbee Series 2 modules with Arduino Board Shields.
Uses Melexis Temperature sensor and Arduino Board to monitor and plot ambient temperature.
The realization of this project is well documented on the [blog], with code, graphs and pictures.
How about a new way to make music? [cpeckmusic] has it’s way to do it, with is project Sharpy.
Sharpy is an electronic instrument that was designed and built by composer Charles Peck. The instrument utilizes three infrared distance sensors to control the sound, which is produced digitally with an Arduino board and GinSing shield. So as users interact with these sensors, there is a clear auditory connection to their physical actions.
Despite having only three sensors, the instrument is capable of a variety of sounds. This is because Sharpy has three possible operating states, each of which assigns a different set of parameters to the three sensors. State 1 is initiated by covering the sensor on the user’s left first. The instrument will then stay in State 1 until no sensors are being covered. Therefore, the user must completely remove their hands form the instrument in order to change states. Concordantly, State 2 is initiated using the middle sensor and State 3 using the sensor on the right. The short improvisation in this video demonstrates a few of these sonic possibilities.
I suggest you to watch the [video] of the live performance. If you’re interested in more works check his official [website]
Ecco un piccolo video report della puntata dell’Arduinotour a Matera (c’é anche un set su Flickr). Questa edizione del tour é stata caratterizzata dalla partecipazione di un ragazzo francese (partito dalla Bretagna e volato per un week-end a Matera – Grande Baptiste!) che ha condiviso con noi la sua esprienza di sviluppatore di open energy monitor, un framework open source per la visualizzazione di consumi online, di cui parleremo presto in una intervista ad hoc. (il blog di Arduino ha trattato precedentemente questa storia, vai al post).
Causa maltempo il workshop é stato ospitato presso le Monacelle, un bed & breakfast poco l’ontano dall’Incubatore, all’interno dei Sassi. Un grazie a Sviluppo Basilicata per il supporto e l’aiuto nell’organizzazione dell’evento.
Per chi si stesse chiedendo quando e dove si farà il prossimo workshop #arduinotour, eccovi serviti: Reggio Emilia a fine gennaio (26-27), presso il neonato Fablab ospitato all’interno dello Spazio Gerra.
Apparently, it’s the most wonderful time of the year. We have been thinking about what to get for the Raspberry Pi owner in your life. Happily, MakeZine have done the hard work for us, and have come up with a terrific gift guide. Head over and check it out – once, of course, you’ve stopped by our own store and bought your Raspberry Pi fan a branded t-shirt, lovingly hand-knitted from Santa’s beard hair by elves*. All profits on the shirts go to support the charitable work of the Raspberry Pi Foundation.
*Details about t-shirt production may or may not be strictly speaking true.
Here’s something I’ve been hoping one of you would produce for a while now. If you’ve got kids, you’ll know that many baby monitors are disgustingly expensive bits of kit, whose price remains as high as it is in a pretty unpleasant bit of exploitation of the fear and worry that every new parent experiences. So I was really pleased to see Matt Kaar, a Pi owner from Virginia, make his own networked, high-fidelity monitor from a Pi and a USB microphone. He’s very pleased with the results: “You can hear a pin drop.” You can follow Matt’s detailed instructions on his website if you’d like to make your own. (Thanks very much for responding to my request to write about it, Matt!)
These are all the parts you’ll need to make your own. Matt says the whole setup was “easier than I’d thought” – this is a project that even beginners will be able to approach.
I’m sure that once the $25 camera board is released in the new year we’ll start to see some cheap camera monitors being hacked too.
We’re very pleased to see that Plan 9 has been ported to the Pi. Plan 9 is an open-source Unix-type operating system, which was originally developed at Bell Labs as a research OS. What’s particularly interesting about Plan 9 is that everything behaves like a file, whether it’s a local or a network resource. We recommend you have a play with it!
More than a year ago, people on our forums started talking about using the Raspberry Pi in a very specific piece of cosplay. If you’ve played Fallout, you’ll know that no self-respecting apocalypse survivor goes anywhere without her Pipboy. People were wondering whether a Raspberry Pi could be used to drive a working piece of costume, perhaps with a GPS, and definitely with a small screen and lots of blinkenlights.
I thought that particular thread of conversation had died quietly: I was wrong. Ryan Grieve has made a really nice example using a car reversing panel, a tub of polymer pellets, a handful of leds and an Adafruit cobbler.
His Pipboy has functionality including a world map, local map, radio and a twitter client – or at least it did before some shonky home-wiring caused the whole arrangement to burst into flames. Happily, the Pi survived, and photos were taken before the disaster. Ryan also has code so you can put your own together – just please be more careful with the wiring if you make one yourself. Electricity’s not a toy, kids.
Good luck in fixing her back together, Ryan! We congratulate you on your flameproofness.
Here’s a project with a more practical application. Gasser is a Pi-based, networked, mobile pollutant sensor for detecting nitrogen dioxide, ozone and sulphur dioxide, developed in Paris.
Gasser v2 prototype
This self-contained unit’s BOM cost comes in at €255 (the majority of that cost is taken up by the very accurate sensor); this is cheaper and smaller than equivalent devices – and it’s still only a prototype! We wish LaboCitoyen all success with the project; it’s great to see a Pi being used to make our cities healthier places.
Alex from RasPi.tv has some video to show you how to use relays to turn what he calls “useful, real, BIG things” like fans and lamps on and off, according to environmental conditions – too hot and the fan will turn on, too dark and the lamp will turn on. You can also hook the devices up to the network, so you can use a connected device, like your phone, to turn them on and off; and just because he can, Alex has also added some sound effects. This is a great tutorial. If you’re interested in learning about physical computing, it’s well worth watching this video and reading Alex’s blog post. RasPi.tv has plenty of other fun tutorials – I recommend you spend a few minutes browsing through the collection!