Hourglass project - Part 1

Started working on a new mini-project to build an hourglass using cascaded led matrix displays driven by max7219s and an arduino with some kind of a gravity sensor on it.

What makes this project interesting is I intend to make it imitate physical falling of sand particles under gravity.

Initial challenge is to have a prototype housing. As I intend to imitate a real object I cannot simply place components on a breadboard and lay it flat. I have not decided on the sensor type either. I need to experiment with a simple ball in a tube tilt sensor and an 3 axis gyroscope to see what works best.

Cardboard housing was a good option, easy to work with and readily available. I am also using some plastic standoff screws to mount it on the folded cardboard.

cardboard housing

To be continued. Part2