Rpi LED Display Box

I have made up a 30 LED display for the Raspberry Pi GPIO's.
It can display all GPIO output from GPIO2 through to GPIO27
leaving 4 that are not connected to any GPIO and can be used
to display other out put or data.



The LED display box consists of 3, 10 LED display modules and
three 8 resistor banks of 470R value and 6 * 470R 1/4W carbon
resistors to limit the LED current. They are connected to the
Raspberry Pi GPIO pins via a ribbon cable and header sockets.
All the components are fitted to a piece of Veroboard and mounted
in the case with screws and spacers.



Internals of the LED box.



Outer row of header sockets.



Inner row of header sockets.



Inner row from right to left socket 1, 3 and 4 and outer row from
right to left sockets 2 and 5.



LED's 2, 14 and 27 are on.



Small application cut using Gambas3 to allow test switching of
the GPIO out puts.

Link to RpiLeds schematic diagram.