- Atmega328
- 22x5 0603 LED Matrix charlieplexed display https://hackaday.io/project/18014-5-alphabets-charlieplexed-matrix-display-22x5
- DS3231
- Liion USB charging - Buzzer
- MMA8452Q accelerometer
- touch button

Check project page for old version https://hackaday.io/project/27882-open-source-diy-nike-fuelband

I have plan now work without communication with phone.
There is lot products with pedometers, sleep tracker and more.
This is for my dumbest things.
It's stupid leave machine to make decisions how to sleep, eat, walk ....

This is FLEXIBLE single board band

Picture of my NO - FLEXIBLE version