Soft sensing - beautiful sensor: Go Card
For the last soft sensing project, we decided to focus on one material - conductive paint. We are inspired by a circuit book using conductive tape and paint during the class, decided to make a Korean education kit.
Hangul, Korean letter has an unique system, the letters are assembled to make a sound. If we use a conductive paint, we can stack each sound/letter card on each other.
We chose “ㄱ" + “ㅏ” = “가“, 가 is the most simple and basic letter when you learn Korean as we learn A,B,C in English. 가 also has meaning of ‘Go’, so we named our kit as Go Card.
Even though conductive paint is rather conductive (as the name says) than resistive, the stroke to draw each letter is different. We can make parallel resistance by stacking cards on the kit, and what we need to do is just play sound. We adjusted the last Angry bird returns code.
Laser cut acrylic board for our card and Arduino spacing.
After we painted conductive paint, and soldered the analog read circuit on the perf board.
Since the paint is not super durable, but it was good enough to see our concept works. In the same way, we can extend to different Hangul letters.