Coldplay wristband “Xyloband” – a look inside

The Coldplay concert at Rose Bowl was a big show (see http://www.zweimalsommer.com/2016/08/a-rose-bowl-full-of-leds.html). The major element of the show was a wristband which everybody got at the entrance. This wristband is called “Xyloband”. Their homepage shows some other great shows, in which the Xyloband was used: http://xylobands.com/gallery/.

Let’s take a look inside: The main PCB has three ZIF-connectors. A flexible PCB with 4 LEDs is connected to the middle connector.

Another LED-stripe is connected between the two remaining ZIF-connectors. This LED-stripe is the actual wristband.

The Xyloband gets its power from three batteries on the back side of the PCB.

The main components of the PCB are:

It is amazing, which light effects can be achieved with this little circuit.

There is an interesting interview with Jason Regler, the inventor of the Xyloband, where he explains that he got the idea for the Xyloband in 2005 during the song “Fix You”, which Coldplay played at the Glastonbury Festival: http://www.coldplay.com/newsdetail.php?id=906. The song text “…lights will guide you home…” was his inspiration.

Movie or Reality?

Everybody who has seen the “Terminator” movies will recognize this company name. This is real!

http://www.cyberdyne.jp/english/

At the moment, the main intention of Cyberdyne robots is to assist elderly people.

Other companies like Boston Dynamics produce even more realistic robots, more and more similar to humans.

“Thermal runaway” of Lithium batteries

A German actress is happy that she is still alive because the Lithium battery of her smartphone started burning on the couch in the morning and the whole apartment burned out. This is the original German article.
http://www.vip.de/cms/wegen-smartphone-ex-soap-star-tanja-wenzel-bei-wohnungsbrand-verletzt-2607658.html

This problem is related to Lithium batteries in general and can happen in any smartphone, laptop, etc.
A German documentary shows the “thermal runaway” effect of Lithium cells.