The version built with feather m0 board is done. I’m now finalizing the code to make moving patterns.
The current design of the earring have the LED matrix and the feather m0 board soldered closely together and the whole thing plus battery weights 20g. The battery (350mAh) is rechargeable by just plugging in to USB and it lasts more than 2hrs.
The current settings for user including choosing pixel color on their phone and typing letters in Bluetooth uart to define how they want the pattern to move. The types of moving and their corresponding ascii letters are: up (^), down (_), left (<), right(>), rotate left (l), rotate right (r), expand (e), shrink (s), and stop (.). Stop (.) is used to make the moving pattern stop. By using this current setting, users should be able to design interesting patterns for different moving styles.
We will make our attempt on using our customized PCB that fits the LED matrix better, but to account for the possibility that we couldn’t get the PCB working, our final project will just be the feather m0 version.