📱 This is a creative phone holder, specially designed for a mobile time stopper game, where two users can push buttons on their sides to stop the timer on the phone and see who's result is closer to 10 seconds.

🔆 Highlights

  • Typewriter inspired mechanism with pleasant haptic click feeling.
  • Carefully established conductive path from finger to screen, allowing non-human objects to trigger the touch events on phones.

🕹️ Game link (play on phones): https://yuechengpeng.github.io/stopwatchGame/

🗿 This is one of the personal weekly projects of the TECHIN 511 (Fabrication And Physical Prototyping) course @ GIX, UW.

The initial lo-fi demo to testify the concept of the typewriter mechanism.

Push down ➡︎ click up.

Push up ➡︎ the trigger didn't restore to its original state, because I used a soft yarn to connect two parts.

Learning from previous demo, I realized maybe a rigid wire would work better.

Push down ➡︎ click up.

Push up ➡︎ restore to the original state. Later this "push up" action didn't needs to be done manually but achieved by embedding a spring.

I made a mid-fi prototype of the 3D version of the mechanism using laser-cut sheets and bolts. It went pretty well.

To enable non-human objects trigger the touch screen, I tried different readily available materials in the makerspace (There might be some kind of rubber material capable of doing it, but it's hard to order, get it, and implement it within a week). The result was that wet fabrics worked well, but it needed something conductive to connect it to the human body. This was achieved by using copper tape and bolts to establish a conductive path to the button surface.