Sandless Sandglass [Prototype]

Week 4

Angles and delays

I first started by connecting my servo to my Arduino and experimenting with the delays and angles to get a one minute rotation

Got it for almost 60 seconds after a few tries. After this, I added the code for the servo to change direction based on the readings from the Arduino's gyroscope. So when the sand glass is turned, the clocks start counting down from the seconds already counted. (like a normal sandglass)

I then started designing the prototype for the sandglass with paper. The first layer was semi-transparent for the shadows to fall on. The middle layer is a vertical slot whose width is the same as the width of the second slots on the third layer and the height is the vertical distance between the top and bottom seconds slot. The third layer is the seconds layer and is the only moving layer which is attached to the servo

An issue that I had was the light source. I realized I needed a strip to avoid the shadows falling at an angle and for the seconds to be shown more accurately.

But during its process, I did like the faded spiral light falling on the first layer and want to find a way a clear shadow of the right second can be cast along with the faded shadow of the spiral of the seconds layer. For the prototype, I used a torch attached to a screwdriver to test the mechanism

Final outcome