Want to make one for your desk? All it takes is an Arduino Nano R3 or comparable microcontroller, an RGB LED ring with 12 LEDs, a 16×2 LCD, a buzzer, and a momentary push button switch.
SoundSlide is an open-source hardware USB-C adapter that adds a capacitive touch interface to your laptop or keyboard PC in order to control the volume without having to reach out to the volume keys ...
But up to 7.9 MS/s can be achieved with additional tricks like using the USB PLL and overvolting beyond VREG_VOLTAGE_MAX, external_adc – PIO program that reads the data from a 12-bit ADC connected to ...