Logic probe 2

Another take on o faithful Logic Probe, microcontroller style.
This is the essential tool in every ones tool box for then designing or fixing any digital circuit. The circuit is build around ATtiny13A with selection switch for TTL and CMOS circuits.

Bit more advanced circuit then the original Logic probe as it involves 0603 SMD components and need for programming the microcontroller

Since all both Logic Probes use same case STL files for this probe with out adding 4th LED hole simply by using 2 pin bi-colour for LED3

Please refer to    http://PCBhut.com/Products/LogicProbe-2/index.html