This bracelet is basically a wearable continuity meter that translates the electrical resistance between two fingers into sound.
Circuit diagram and legend of parts:
Updated circuit layout used during the workshop (to accommodate different speaker):
(coming soon….)
Code
>> https://github.com/plusea/CODE/tree/master/WORKSHOP%20CODE/ARS/a_tinyDrawdioBracelet_sound
Materials and Parts
Materials:
* Copper adhesive sheets >> http://www.kobakant.at/DIY/?p=2176
* Kapton film
* Karl-Grimm copper thread
* Silverized lycra conductive fabric
* Fake leather
* Thick cotton thread
* Metal snap fasteners (poppers)
* Silhouette tattoo paper
Parts:
* ATtiny45 microcontroler >> http://at.rs-online.com/web/p/mikrocontroller/6962614/
* Speaker
(* alternative: sewable piezo speaker CMT 1603 >> http://www.digikey.com/product-detail/en/CMT-1603-SMT-TR/102-1193-1-ND/504822)
* CR2032 3V coin-cell battery
* 1.5 M Ohm resistors
Tools
* Large eye not-sharp sewing needles (for thick cotton thread)
* Medium eye sewing needles (for conductive thread)
* Scissors
* Iron
* Soldering iron
* Wire cutters and strippers
* Hole punch
* Snap press tool
* Silhouette vinylcutter
Links
ATtiny Drawdio Bracelet Workshop >> http://www.kobakant.at/DIY/?p=5763
>> ATtiny Drawdio Bracelet Flickr set
>> Wearable Studio Flickr set
>> Code
>> PDF of book
>> Andy
>> Hannah
>> Our Madagaskar adventure
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