“Face touch” vibrating notifications with a sub $10 SmartBand: https://media.mit.edu/projects/saving-face
A sub $10 fitness tracker as wearable development platform!?
For this cost, this smart band has a looot of features:
To get it, you can try these links:
If they’re broken, this list should help to find more.
To upload your custom firmware on this smartband, you can simply use this app.
To customize the firmware, just clone this repo, and compile the code with this adapted Arduino library environment.
The following links should help understand the pinout:
This would not be possible without the excellent work by Sandeep Mistry, fanoush and atc1441.
Bonus: ATC1441 made this great video to explain how the firmware upload works (among other things).