I saw a few examples of some Arduino and Raspberry Pi-based head-up displays that gave me an idea for the design I was working on. They attached to a regular piece of apparel, usually a hat or eyeglasses. I have several hats, and this design would allow me to use less 3D printing materials. The piece extending to my mouth has a USB microphone wired to the Pi and a gas sensor. The gas sensor is for reading my breathing rate by picking up my exhaled CO2 levels. A temperature sensor could also work in place of the gas sensor.
I decided to test out the wearability of this design while completing a half-marathon that I participated in for the 2nd Annual HBCU STEM Education Run.
I jogged through a local hiking trail. I recorded most of my hike with my phone strapped to my chest and with the head-up display’s camera. The chest-cam video was too long so I sped up the playback and cut out some parts. At other parts I stopped to get some beautiful shots of the trail and river in normal speed.
Overall, the setup worked well. I will be moving the camera and buttons to the center above the display so that my head doesn’t feel unbalanced.
Booman's Workshop 