Tag Archives: IoT

DIY Connected objects for happy connected people

via Arduino Blog


What happens when a creative technologist wants his family to know he’s thinking about them? He creates a project with Arduino Yún! IMissYou is a simple project transforming a picture in a connected object thanks to a capacitive layer made with Bareconductive Paint and inserted behind the photo. The ‘touch’ is detected by the Arduino through the glass of the frame by a spike in the values (with a basic Capsense library), sent to the internet via wi-fi and delivered to a phone with Pushover.


Martin Hollywood, the Arduino user who made  the project, wrote us:

Looking at the photograph of my family that I have on my desk one day, I missed them and wanted to be home. I touched the photo and realised that somewhere between those was the germ of the idea…

I wanted my family to know I was thinking of them, but I didn’t want to create two products; think GoodNight Lamp – I do love that project. In any case, there was no guarantee they would even notice a ‘blinking’ photo frame responding to my signal. Making the Receive a PUSH notification seemed like a no brainer, but the last time I developed for mobile was iOS 1! There are a number of service apps out there: Pusher, Pushingbox but I decided on Pushover. It had a 7 day trial period and good API support (I’ve since bought a license).

Take a look at his blog for more details and if you want to give him some tips to make it a real product.

Sensly: an air quality monitoring HAT

via Raspberry Pi

Altitude Technology have a very interesting Kickstarter campaign that’s just entering its final few days. It’s for an Internet of Things air quality monitoring device called Sensly, and one of the interesting things about it is that it’s available either as a consumer unit or, considerably more cheaply, as a Raspberry Pi HAT.

Sensly's air quality monitoring HAT has applications at home and in education

Sensly will be able to detect benzene, carbon monoxide, formaldehyde, nitrogen dioxide, sulphur oxide, ammonia and polycyclic aromatic hydrocarbons; now that it has met its first stretch goal, it will also detect particulate matter such as pollen, smoke and mould spores, and backers will get this useful additional functionality for free. Temperature and humidity sensors are thrown in too. As with the Sensly consumer unit, the HAT version can communicate directly with your smartphone, giving you push notifications of high levels of pollutants, as well as uploading data for viewing (and, if you want, sharing) via a web browser.

We really like the idea of making a device available as a Raspberry Pi HAT as well as a boxed appliance so that you can hack and customise your own system, and the possibilities of this one are pretty broad. You could connect a camera board, for example, and investigate whether anything in particular happens to nitrogen dioxide levels when lots of Volkswagens are in the vicinity. Several unpleasant constituents of cigarette smoke are detected by Sensly, so you could quantify the effect of cigarettes on your air quality. With the addition of pH sensors, a number of the devices could monitor sulphur oxide levels and rainwater acidity across geographically distant locations over long periods; what patterns might be found in those data? And if I still lived aboard the fine narrowboat I used to own, I could save myself a considerable amount of anxiety by properly logging carbon monoxide levels and finding out how they actually varied with the use of our three cooking and heating stoves.

Narrowboat Roe moored on the Old West at sunset

Converted 1959 British Waterways freight butty Roe moored on the Old West at sunset, and a heady quality of nostalgia. But there’s no point my hanging around here reminiscing; the past, as Elsa put it with memorable force, is in the past.

The team behind Sensly might be onto something when they argue, as they did in their winning pitch to Pitch@Palace On Tour recently, that making air quality more personal and tangible with a low-cost sensor system could motivate people to take action, and all sorts of recent news stories suggest that there is scope for paying a bit more attention to what we’re breathing. As a single example, evidence to the UK government’s consultation on air quality plans, released a week and a half ago, revealed that nitrogen dioxide exposure alone is causing an estimated 23,500 early deaths in this country each year.

Early-bird backers of Sensly’s Raspberry Pi HAT will get a device that shows them local levels of this and all kinds of other substances of interest for £25, but you’ll have to move quickly; the campaign closes this Saturday.

The post Sensly: an air quality monitoring HAT appeared first on Raspberry Pi.

Soldering iron + Nodemcu = IoT device

via Dangerous Prototypes


Vegard Paulsen blogged about his soldering-iron #IoT project:

My trusty old soldering-iron recently got an upgrade!
With the help of a NodeMCU. a RGB-LED it now reports the set temperature to the #IoT Thingspeak.com server through WIFI.
It also sends me Prowl messages on my Iphone when I forget to turn it off.
It all started when I needed to fix the display on the Soldering-iron itself after some guys at the soldering-iron factory forgot to mount the segment display properly.
The road to IoT is anything but streamlined yet. The NodeMCU & Arduino IDE integration is in it early stages and the tutorials out there are few and full of frustation.

Developers: builders or explorers?

via Arduino Blog


Last spring we collaborated with VisionMobile to run a survey on IoT developers and also the value that Open source has in the field.

We discovered that Between IoT developers there is a big chunk of open source enthusiast. 1/5 value the importance of using open source tools and platforms.

Developer that define themselves explorers cover a crucial role in the field. It is from them that all the truly new, out-of-the-box ideas come from.

Only by exploring seemingly crazy ideas can the Internet of Things reach its full potential. The open source ecosystem is often the area where these ideas bloom.

While open source is so valued between developers, there is still a lot of work to be done. 60% of the opensource enthusiast in fact, think that open standards are missing in IoT.

We are really happy that the connected Home is the most interesting vertical market for developers, and we can’t wait to see what this big group of explorers will develop in the next future. Hopefully the next big invention will be open source.

Find a full article on Developer Economics website.

On Casa Jasmina website you can explore the infographic in high-res with some  interesting data:


The most important role of Internet of Things developers is to explore new possibilities. The technology is widely available; in no small part because of open source software and hardware projects. Now we need to learn where we can take it. We can build it, but should we?

Fish tank temperature probe: an ideal beginner’s project

via Raspberry Pi

Determined to redress the moggie-doggie bias of the internet Lauren Orsini decided to use a Raspberry Pi and a waterproof temperature sensor to monitor her fish tank.


It’s not a recent project but it deserves a place here because it’s such a brilliant introduction to physical computing on the Raspberry Pi: one sensor, one purpose and a few lines of “English with a funny syntax” (aka Python). It’s a great tutorial too—Lauren writes clearly and shares her beginner’s point of view, documenting things that more experienced people might take for granted. The setup is based on a tutorial from Adafruit and although Lauren hadn’t done any “hardware hacking” before, she says that the hardest part was “taping the wires inside the temperature sensor to the wires that fit inside the breadboard.”


So it’s a real beginner’s project but one that can be expanded as you learn. Lauren, for instance, extended the project to turn it into a true Internet of Things device that texts her when the fish tank gets too hot. All in all it’s a great way to slowly build your Raspberry Pi computing skills.

It’s also pocket money cheap. In fact if you already have the CamJam EduKit #2 then you already have the kit needed for this project. And of course the sensor doesn’t have to be in a fish tank. Monitor the temperature of your bathwater; your cup of tea; the fridge; your dad’s armpit while he dozes in front of the TV. If you’re looking for something to do with your Pi on the last day of your summer holiday then this comes highly recommended.


Bonus back to school question #1: If ‘dogs’ = 5; ‘cats’ = 2; and ‘cheese’ = 1, what is the value of ‘fish’? Answer tomorrow…

The post Fish tank temperature probe: an ideal beginner’s project appeared first on Raspberry Pi.

Moteino IoT sprinkler controller automation

via Dangerous Prototypes


Felix of LowPowerLab writes:

Another node type is now available on the Gateway automation interface: a sprinkler controller. This is achievable through a board I designed to be able to control many outputs. I call this board IOShield and it features two 74HC595 serial to parallel shift registers.
The IOShields are daisy chainable and can take 24VAC through a buck regulator. Wireless control is done with a regular Moteino or MoteinoUSB and in a daisy chain only the first board would need the regulator and Moteino.

Project details at LowPowerLab blog.

Check out the video after the break.