Stereo LED VU Meter

Dual 12 bit LED Bar graph display.

0-2V P/P input, left and right channels.
Two modes "normal" and "peak hold", link selectable
Supply 5-12V

Raspberry Pi Power and Fan Controller V2

MOSFET driver for 5V 40mm Fan - GPIO17.
Connection for +5V input (to power the Pi) or output.
Solder pads for GPIO24 and GPIO25 for external relay board or other.
40 pin GPIO header and 2 pin header for the fan.
Status LED connected to +3.3V from the Pi.

Raspberry Pi Power and Fan Controller

MOSFET driver for 5V 40mm Fan - GPIO17.
Connection for +5V input (to power the Pi) or output.
Solder pads for GPIO24 and GPIO25 for external relay board or other.
40 pin GPIO header and 2 pin header for the fan.
Status LED connected to +3.3V from the Pi.