E-ink screens are on the market from many years. They use less energy, and are quite flexible, so Triumph used them to make an innnovative bra that can change its color from white to black. Just activate the switch and BOOM, color change!
Enough with words, the video shows the action much better.
This is the “sisters” kit (姉妹 – Shimai) inspired from Frozen – where the elder one gets the 姉 (Ane, elder sister) and the younger gets the 妹 (Imouto, younger sister). When they’re nearby, BAM, the bra can change color.
Last week I was excited that Dealextreme opened a warehouse in Europe.
Browsing the website I saw that there are a lot of Arduino accessories, the DIY programmable electronic platform. I was about to buy a Raspberry Pi B+, but the idea of having a full fledged Linux system just for doing, for example, a simple temperature logging circuit, looked like a waste for me.
Seeing the many components, I got a lot of nice ideas to make, that obviously I’ll publish here, with circuits and source codes.
From the European warehouse I ordered:
An Arduino Nano (chinese clone, obviosly, since it costs just 7 euro)
A pair of breadboards to quickly do the circuit without using the solder. Moreover the Arduino Nano it’s designed to be put on a breadboard to easily access its contacts
A breadboard power supply to put on the breadboard, for having current on the rails more easily, without jumpers (1,60 euro!!)
A lot of random LEDs (here I could save some money by scavenging them from old circuit boards, but I was lazy)
A lot of male jumpers for the breadboard (here I could save too, if I just bought some telephone cable, but for 2,48€, this is nicer)
A lot of female jumpers (2,06 €, I could take them from old electronic connectors)
A temperature sensor. The DHT11 model costs less than half the price, but reading the datasheet, it gives the temperature with a 1 degree tolerance… it can’t be used to log reliably home temperatures. The one I chose, the DHT22, it’s still a cheap sensor that gives temperature with an half degree tolerance. I’ll just use it for see if my idea is feasible and then replace with a SHT15 (which, at $45, it’s not fit for experiments…)
Then I ordered more from the Chinese warehouse, for the simple reason that was cheaper – meanwhile I have to learn how to use the platform, so if they arrive after 2 months it’s still ok:
An Arduino Uno (still a chinese clone, because it sells for 5 euro)