Safecast is a global sensor network for collecting and sharing radiation measurements to empower people with data about their environments.

sean

May 6, 2013 12:30 May 6, 2013 12:30 May 6, 2013 12:30
 

The above video is a hexacopter with an onboard bGeigie Nano taking radiation readings in flight and broadcasting live via wifi. It’s the result of the just finished week long Safecast hackathon that just took place in Cambridge, MA.

There were a number of reasons to focus on a drone during this hackathon. Of course drones are cool and exciting, so that helped to keep people interested. On a practical level there’s also a need for something like this that would enable us to take measurements in a location that would be too dangerous or just plain unreachable for people, such as a steep hillside or a contaminated area. We could also plot out a flight path and let a drone measure a huge field much quicker than a person might be able to navigate the area. Thinking about our data in relation to a drone also allowed us to consider some existing issues from a different perspective and tackle them with renewed vigor.

The concept of a Safecast Air Force – that is a modular drone platform with a number of interchangeable elements – was originally suggested by Ray Ozzie and and over the week Safecasters Naim Busek, Joe Moross, Pieter Franken, Steven Wright, Ariel Levi Simons, Haiyan Zhang, Paul Campbell, Anthony DeVincenzi, Samuel Luescher and I took it from idea to reality.

We started off with a prebuilt Hexacopter from 3D Robotics and then upgraded the motors and blades, as well as giving it a more robust DJI Flame Wheel Frame. With Ardupilot (an open sourced arduino based autopilot system) providing the brains and Safecast providing the payload, we built quite a full featured flying machine.

While this is certainly our flagship at the moment, we also looked into using the Parrot AR.Drone 2.0 Quadricopter as a prebuilt platform as well. We have a lot of work to do reducing weight of devices for that to work, but if we can prove a concept works on a more expensive design and then scale it back to a minimum viable product that easier for people to contribute to that’s an exciting prospect as well.

If we step back for a moment, this modular system becomes quite elegant. The drone is the “platform” but could easily be swapped out for a bike, a car, or carried by a person. The “sensors” for this proof of concept were radiation, but could also be swapped for air quality or anything else you wanted to monitor. We were using wifi to “upload” the data, but there are any number of other data transfer methods that could be deployed here. We’ll continue to develop this program and are excited to see how it helps spring board our other initiatives.

A handful of earlier test flight videos can be found after the jump. Continue reading »

April 3, 2013 15:26 April 3, 2013 15:26 April 3, 2013 15:26
 

Last night at the weekly Crash Space meeting, Naim showed off the current, working, Safecast Air prototype during show & tell, as well as an example of a possible housing using plates. We’re calling the device the “canAIRe” and may actually use a can as the housing, but this was interesting to see in practice. The housing is important because it has to let enough air through to be measured, while still protecting from the elements. We’ve also realized that the particle sensors we’re going to need are are going to be much beefier than originally anticipated – the cheaper smaller ones only perform in heavily contaminated areas, so for any reliable measurements at low levels we need to step up the hardware. More soon!

Continue reading »

March 1, 2013 11:09 March 1, 2013 11:09 March 1, 2013 11:09
 


Our friends at Global Giving did this last year and it was incredibly helpful for us, so they’ve decided to do it again. From March 1st to March 15th they will be matching donations 100%, and on March 11th they will match 200%! The trick is there is a limited amount of matching funds available so if they are used up before the end of this campaign then matching stops. What this means is if you’ve been considering making a (tax-deductible) donation to Safecast, doing it now multiplies your impact greatly. Here’s the link to donate. You can also follow along and see how the matching program is going using this leaderboard . Thank you so much for helping us continue this work!

  • March 1, 2013 11:09
  • Posted by sean on March 1, 2013 11:09
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March 1, 2013 10:53 March 1, 2013 10:53 March 1, 2013 10:53
 

A massive update to the iOS app just went live in the app store. If you don’t have it already you can download it here. In addition to the full Safecast database, there are new map layers showing natural background (and subtractions) as well as interpolations.

Combined with your iPhone’s GPS this continues to function as the best (only?) virtual geiger counter available. It’s free, so please consider downloading it now.
Full update notes after the jump.

Continue reading »

  • March 1, 2013 10:53
  • Posted by sean on March 1, 2013 10:53
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  •   Maps, News
February 4, 2013 15:27 February 4, 2013 15:27 February 4, 2013 15:27
 

Earlier this year we held what will hopefully be the first of many Safecast Hackathons. Since Safecast has such a fantastic team of volunteers working together, we thought it might be beneficial to bring everyone together in one city for a week to hash through ideas and cross things off the todo lists. While the ability to have a distributed team is amazing, there’s immense value in getting everyone together face to face. We did this for the first time in January – brining team members from Los Angeles, Boston and Dublin over to Tokyo to work closely with those already in Tokyo as well as volunteers from elsewhere around Japan.

We took over two (sometimes three) floors at our offices in Shibuya (thanks to Loftwork & FabCafe for letting us) and worked on wide range of Safecast related issues. Hardware, software, devices and mobile issues. Our data upload area has been completely redesigned and our map now updates hourly with refreshed data from our servers so it’s incredibly up to date – more so than it’s been in over a year. These were both major milestones that we’re very happy to have pulled off. We also walked away with a firm grasp of some next steps. We’ve already begun planning for our next Hackathon which will likely take place in April in Boston. Lesson learned from this one is to have more focus on fewer areas as things got a little chaotic in Tokyo, but each one of these will teach us something and we’re looking forward to the progress we continue to make. Below is the final toast, one of the volunteers brought some amazing Sake from Fukishima for everyone, as well some photos from the week.


(Photos by Pieter Franken and Sean Bonner)

  • February 4, 2013 15:27
  • Posted by sean on February 4, 2013 15:27
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January 31, 2013 13:25 January 31, 2013 13:25 January 31, 2013 13:25
 

Along with Tony DeVincenzi, MIT Media Lab student Samuel Luescher developed the GeoSense mapping platform to help solve many of the problems we were having visualizing our data set. Samuel recently gave a short presentation about the platform that shows just how powerful it is. We’re incredibly lucky to have brilliant developers like this on the Safecast team.

  • January 31, 2013 13:25
  • Posted by sean on January 31, 2013 13:25
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  •   Maps
January 13, 2013 07:52 January 13, 2013 07:52 January 13, 2013 07:52
 


We kicked off the first hackathon of 2013 today in Tokyo. In many ways today was a planning session for what the rest of the week will look like. We ran through the issues lists on several key Safecast repositories on GitHub and created some milestones of things we’d like to solve this week, as well as discussed what new needs to happen and when it needs to happen by. Some of the team is still rolling into town and I expect the next few days to increase in productivity and intensity. With people flying in to Tokyo from Dublin, Boston, Los Angeles and joining with those from all over Japan it’s fantastic to get everyone into one room to brainstorm, problem solve and plan courses of action. I know we have a spectacular collection of talent working on this project, but days like today make it so apparent.

I’m incredibly excited to see what this week brings, we’ll be updating as we go and broadcasting parts live here and there for people who might like to join. Follow @safecast on twitter for specific info when we do it.

  • January 13, 2013 07:52
  • Posted by sean on January 13, 2013 07:52
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January 3, 2013 13:24 January 3, 2013 13:24 January 3, 2013 13:24
 

This is happening, stay tuned

  • January 3, 2013 13:24
  • Posted by sean on January 3, 2013 13:24
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  •   Hardware
December 16, 2012 17:21 December 16, 2012 17:21 December 16, 2012 17:21
 

At Safecast, we have been talking about our distributed team(s) and how beneficial it is when we can get people in the same room to actually hack on things. Not just bring each other up to date on what we’ve been working on, but actually get our hands dirty and build stuff. And then when we go back to our corners of the world the motivation from that progress helps keeps things moving. Upon realizing this we decided that we really needed to start having regular hackathons. Tentatively, we’ll have 4 a year, one in each quarter and each time in a different location around the world. That’s the idea anyway, we’ll see how it plays out in practice, but for the moment we have the first one to announce:

In January, we’ll meet up in Tokyo for a week and take a big bit out of our collective to do lists. We’ll start with the public GitHub issues and move on to new issues as they arise. And while a hackathon is kind of without structure, we’ll have some kind of opening event where we set up some goals and directions, and some closing event where we see how well we did. This will take place physically in Tokyo, but we’re going to try to live stream some of it as well as use IRC and shared web based documents to allow anyone from anywhere to participate if they feel motivated. I’ve put up a google doc with some tentative details – if you’d like to participate please check that out and add your info. I hope this will be the start of something awesome.

  • December 16, 2012 17:21
  • Posted by sean on December 16, 2012 17:21
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November 14, 2012 17:53 November 14, 2012 17:53 November 14, 2012 17:53
 

Tokyo based filmmaker Adrian Storey made this fantastic 3 minute documentary about Safecast for the Focus Forward Films competition and it’s made it to the semifinals! We’re really excited because not only is Adrian is an all around awesome dude, but he made an excellent film that hopefully many people will be able to check out and if he wins this competition Safecast will get some of the cash to help continue our efforts. If you have a moment and can go vote that would be much appreciated!