Multifunctional speaker with LEDs

This portable stereo speaker is equipped with several functions. It can be controlled with the buttons on the front or even with a remote control (IR). You can set the dominant frequencies (Rock mode, POP mode, ...) and the input sources (Bluetooth, Radio, ...). The LED bar on the side can be switched off in case of annoyance. The batteries last for 1-2 days and can be upgraded with 18650 batteries by simply connecting them in parallel (voltage of batteries should be the same!!!). Charges 2 times faster thanks to a 2 amp circuit that charges and protects the batteries. It also shows the charge level of the batteries. More information about the project: https://youtu.be/zGkwpoRhg78