The HaptiCap is a hat designed to provide directional haptic feedback to the wearer. The prototype uses 8 vibration motors and is powered by an Arduino Nano.
My prototype is configured as a haptic compass, using a digital 3-axis magnetometer, it continuously indicates to the wearer the apparent North vector.
A more detailed write-up is available on Github: https://pganssle.github.io/HaptiCap
Components
1×
Hat
Any kind of hat works, beanie, baseball cap, etc.
8×
Vibrator motor
Small vibrator motors for haptic feedback.
1×
Arduino Nano
Arduino Nano or equivalent small microcontroller.
1×
HMC5883L Breakout board (GY-573)
Any 3-axis digital magnetometer will work, I used an HMC5883L. An MPU-9150 may be even better.
1×
DC-DC Step-up transformer
Need to take the battery voltage up to 9-12V.