Don’t Break My Heart – wearable distance warning system for cyclists

Original post: http://rainycatz.wordpress.com/tag/hondahack-cyclists-wearable-technolology-electronics-lilypad-arduino-hack-hackday/

Don’t Break My Heart is a wearable, colour-coded distance warning system prototype for cyclists to wear on their back. It incorporates a sewable LilyPad Arduino microcontroller, RGB LED, proximity sensor, conductive thread and fabrics to create an easily Velcro-ed on and off (moveable between garments & bags) and highly visible alert for traffic traveling behind cyclists.
A pulsating RGB LED heart is triggered by a proximity sensor if a vehicle is detected traveling close behind. I’ve used traffic light colour-coding for the super-bright RGB LED: a slow green pulsating light in the heart-shaped diffuser indicates a safe distance is being maintained, an amber faster light indicates that caution should be observed and a red rapidly pulsating light indicates to the driver that they need to back off and give the cyclist some space. As this is a prototype at the ideas stage, safe distances and final technology, such as sonar for proximity detection and other materials/components would be tested and confirmed later in the design process.
I created the first iteration of this piece of wearable tech at Hondahack within a 12 hour deadline. I wasn’t happy with the look of it just because I’d rushed to kludge it together for the presentations, so after and when I had the time, I unpicked the conductive thread and components, and put it back together.

For those interested, here’s my write up of my weekend at Hondahack
Held at the Guardian offices in November 2011 and brought together by the fabulous Rewired State people, Hondahack was a different kind of hack day than any I’d attended before as it was totally sponsored by Honda as part of their ‘Dream Factory’ which includes a group of people they’ve brought together and deemed ‘cultural engineers’ – quoting from the page in the Graunaid it describes them as “people who embody the Honda philosophy of pushing forward and venturing into the unknown”.

One had to apply for a place at the hack weekend and twenty-three were selected, of which three were women, which is typical of hack days – more often than not because not very many women apply to attend these events.
The article in the Guardian about the event describes the attendees as ‘developers’, and as it was wrapped up in future publicity for Honda there was a camera crew who created a set of fancy videos capturing much posing of the Honda ‘cultural engineers’ around the Guardian offices and also contained sound bites from the attendees, which you can watch here.

On the first morning we introduced ourselves and were shown some Honda motivational videos, we were then encouraged to openly brainstorm ideas and form teams. We then went and looked at the new Honda Civic car in the Graunaid car park, this took us up to lunchtime and after it was time to get hacking. Oh yes, we were given these values assigned to the new car to consider as a brief / guide for our hacks…
“If we never venture into the unknown, how do we get anywhere new?”
*and*

• Quality: unparalleled reliability: ‘A class above’
• Technology: intelligent, useful, innovative, ‘as standard’, economical clean
  Design: sporty + versatile, intuitive, personality, stand-out, confident, aerodynamic
• Evolution: quiet + comfortable, refinement, honing of everything

My hack was a hardware hack, which is strangely still pretty much an anomaly at hack days, so I didn’t really expect it to win anything, plus many of the other attendees were creating vehicle / cyclist warning apps. Anyway, my hack was a prototype for a wearable distance warning system for cyclists to wear on their back that was Velcro on-and-offable. It used a traffic light LED system to indicate to traffic traveling behind of their proximity.

Here’s my description that I wrote on the day… http://hacks.rewiredstate.org/events/power-of-minds/don-t-break-my-heart
“London can be a daunting and scary place for a cyclist. Here in Kings Cross we have seen many cyclists hurt or killed on the roads, in London and all over the UK visibility for cyclists is an issue. My hack for Hondahack is a piece of wearable technology using LilyPad Arduino, RGB LED, proximity sensor, conductive thread and fabrics to create an easily velcro-ed on and off and highly visable alert for traffic traveling behind cyclists. A pulsating RGB LED heart is triggered by a proximity sensor if something is travelling close behind it. A green calm pulsating heart indicates a safe distance is maintained, an amber faster heart indicates that caution should be observed and a red rapidly pulsating heart indicates to the driver that they need to back off and give the cyclist some space.”
I created my hack in less than 12 hours and as I didn’t have the relevant components at Hondahack, I had to go home and get them. So I breadboarded / crocodile clipped a prototype, wrote some code and was up and soldering at 7.30am on Sunday before I went back to the Graunaid where I spent all day furiously sewing my e-textiles, wearable hack together with conductive thread before the presentations at 3pm. I wouldn’t have stopped and eaten all day if it hadn’t been for Emma Mulqueeny, who very kindly made me a tasty vegan risotto and reminded me to eat it – which I wolfed down when it was placed in front of me.

My hack called ‘Don’t Break My Heart’ didn’t win any prizes, but it was nice to get an honourable mention from one of the judges in the summing up. All the winners and hacks are here on this handy page – far easier to browse than me writing them all out for you.

A few weeks after Hondahack I was really pleased to hear that Honda decided they were not going to keep the IP for all the hacks (which at first seemed to be the case).