Today I finished the Soft- and Hardware for a Control Box. This Box controls the behaviour of a rather nice custom I2C LED Matrix.

But get to the Guts first. This is the Top-Side.

As you can see i used the 3006 Marquardt SMD switches again. This time with red LED :-)

As you can see the switches are connected to the Atmega Hearth. Every switch has a pullup (Hard to See because it's 0603) and a LED resistor (0805). The big resistor was intended for a 3W LED but I didn't like it.

I was a bit lazy with the wires, but i worked fast in the knowing i have a nice housing ;)

Lets take a look at the bottom side.

On the bottom side there is the voltage regulator LM7805T with heat sink and the Atmega Hearth. Furter there are the pinheads for input voltage, 5V, alarm In and the unused LED. Btw, the heat sink is the largest possible part for the housing ;-)

Lets take a look at the housing.

The housing is a standard aluminium extrusion euro card box. This means you can insert a euro - standardized - bread board and still have 5mm left. The holes were drilled not milled, so i had to do the captions with my brother thermoprinter.

As you can see the glow of the switches gives a nice effect with these acrylic light tubes (10mm acryl staff, cut and polished :).

Here one more picture ...

Let me hear your comments. perhapps I'm going to add a video a few days later ;)