Instructables user Kris S shows off how to build a soft volume control knob using cheap components. Kris S uses a micro USB cable, a $2 Micro USB Digispark, a cheap rotary encoder, and an ...

Most people attempt to build a DIY ... volume using the formula length x width x height = volume. You may have to adjust your dimensions to achieve the internal volume recommended by the subwoofer ...

Which is why he was willing to hack in his own remote volume control rather than just get a new pair of speakers ... way around and motorize the volume knob. The belt drive looked great, but ...