A cybernetic-augment.
An armband with sixteen vibration motors. Inspired by the northsense and the southpaw, but a less invasive device. Based on the research I've done on people's experiences with similar devices, after enough use it will increase the user's sense of the cardinal directions. My brain will learn to take in the sensory data as an extra sense.

BUDGET: $30

I could use the iphone 7 taptic engine as the vibrator actually? Would be good source of cheap LRM? Available for about $3 per motor https://www.reddit.com/r/AskElectronics/comments/8umvp6/what_voltage_should_i_put_across_apples_taptic/ About 4V?

• https://learn.adafruit.com/lsm303-accelerometer-slash-compass-breakout/coding
• LSM9DS1?
• https://cdn-shop.adafruit.com/datasheets/PCA9685.pdf
• https://www.tindie.com/products/Fyberlabs/uln2803a-darlington-array/
• https://www.tindie.com/products/Fyberlabs/16ch-erm-haptic-flex-module/
• http://www.ti.com/lit/ds/symlink/uln2803a.pdf
• https://cdn-shop.adafruit.com/datasheets/LSM303DLHC.PDF
• https://www.pololu.com/file/0J434/LSM303DLH-compass-app-note.pdf
• https://github.com/pololu/lsm303-arduino/blob/master/README.md

• GPIO 21 (SDA)
• GPIO 22 (SCL)

https://www.wired.com/2007/04/esp/
http://download.icxbk.com/201709/ea4a1abb94615354ef4188b682bbbc88.pdf
https://en.wikipedia.org/wiki/Somatosensory_system
https://learn.adafruit.com/adafruit-drv2605-haptic-controller-breakout/overview
https://i2.wp.com/randomnerdtutorials.com/wp-content/uploads/2018/08/esp32-pinout-chip-ESP-WROOM-32.png?ssl=1
https://medium.com/@SomaticLabs
https://en.wikipedia.org/wiki/Haptic_technology#Vibration
https://www.learning-mind.com/extra-human-senses/
https://www.precisionmicrodrives.com/vibration-motors/eccentric-rotating-mass-vibration-motors-erms