Skip to content
This device can be used to assess the hearing thresholds of young children (age 10 months to 2 years) and special populations.
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
OPTIONAL VRA Controller Links.stl
Parts list
README.md
VRA Acrylic Holder Sliver.stl
VRA Back Cover Plate.stl
VRA Controller Faceplate.stl
VRA Controller Main.stl
VRA LED holder.stl
VRA Main Frame.stl
VRA Top Main.stl
VRA Toy Platform.stl
VRA Wire Covers.stl
VRA_Arduino_Code_May_24_2018.ino

README.md

Visual Reinforcement Audiometry (VRA) Box

OpenVRA is a device that can be used to assess the hearing thresholds of young children (age 10 months to 2 years) and special populations.

Portable. Half-size. 3D-printed. Open Source.

OpenVRA Showcase: https://www.youtube.com/watch?v=vdt06AG41tk&feature=youtu.be

The device's main purpose is to visually reinforce a child's behavior when they hear a sound. Specifically, an audiologist will play a pure tone, the child will look around for the source of this pure tone, and then the VRA box will flash on to reinforce their "looking" behavior. Every time the pure tone sounds again, the child will look around, as they have been conditioned to respond due to the interesting VRA box. Repeat until the threshold of hearing for different frequencies is acquired.

Video Link on how VRA works: https://www.youtube.com/watch?v=S45H3i2ulto

Steps in building the device:

  1. Download and 3D print all 10 files (9 needed, 1 optional piece). Use 20% infil when printing all pieces, ensure supports are activated everywhere for all pieces.
  2. Buy/ gather necessary items listed in the "parts list". Amazon links are provided.
  3. Download the arduino code (Titled VRA_Arduino_Code_May_24_2018).
  4. Follow the Youtube build tutorial at https://www.youtube.com/watch?v=3Vv1RhaNMnM
You can’t perform that action at this time.