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Space Shell 2 and the blowing tube

Textile and circuit design of Space Shell 2 which is tenderly blowing air as soon as you touch it.

In the meantime the textile part of Space Shell 2 was created. The textile process (creating, redoing it again and again) took quite some time and so did the controlling of the aerator. For some days it just did not work, which was frustrating because the circuit actually is very basic. It turned out the problem was just a missing GND connection...

After a try out with several small air pipes, I changed them to one big air pipe. The pressure was not strong enough for the small pipes and there was barely air coming out. One big pipe does not look as nice as the small ones, but the air flow is strong.


Circuit design for Space Shell 2:


For this circuit I just wanted to use the ATTiny 85 microcontroller (see below, 8 legs) also to avoid the "special" design of the Lilypad. I only need two pins- one sensor IN and one aerator trigger OUT, so the small ATTiny85 is perfect. The aerator runs on 12V and the Tiny runs on max. 5V  so the circuit needs a Mosfet (see below, 3 legs) and a 10kOhm resistor.

As the Tiny runs as said with max 5V it is connected to a LiPo Battery.


With fabrics clips and copper tape I make conductive connections between the circuit fabric and the circuit paths comming from the aerator, the sensor and the power supply cable.


Opening up and redoing the Space Shell 2, different look of the sensor:

Inspirations:

orange coral: https://wallhere.com/de/wallpaper/932654

ocher coral: http://www.supertechcrowntower.org/best-of-home-design-ideas

green &white coral: https://www.pinterest.de/pin/531354456021657328/

beige coral: https://www.pinterest.de/pin/506232814335932755/

red, blue, white coral: https://seamsandstitches.wordpress.com/tag/emily-barletta/