In this guide we'll show you how you can create a fun little physics based hourglass gadget. Hourglasses are used to track time, and this one ends up being sort of triangle shaped, so...yah, it's a Time Triangle Thing. This project was inspired by this awesome Instagram post by @david_proyectos.

We'll go over the underlying simplified physics model also. It could be a useful approach for some other gadgets. It's all written in CircuitPython.

Hardware Items

Below we link to the specific hardware items used in this guide. However, the key ingredients are:

  • A reasonably powerful main board that can run CircuitPython and has I2C
  • LED matrix or matrices
  • Accelerometer

Therefore it's possible to come up with potentially different arrangements. For example, an accelerometer breakout could be used with a non-Feather board. Or smaller LED matrices could be used, etc. Also, the battery can be whatever size you want.

The Adafruit Feather Bluefruit Sense takes our popular Feather nRF52840 Express and adds a smorgasbord of sensors...
$29.95
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What's better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix or a
$10.95
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Lithium ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery...
$6.95
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This guide was first published on Jun 06, 2020. It was last updated on Jun 06, 2020.

This page (Overview) was last updated on Nov 06, 2020.