Logic probe TTL / CMOS

A version of the original 10A Logic Probe. 
A very simple design utilizing LM339 voltage comparator and some resistors for voltage reference and sensing of low and hight levels.

2 LED incicators for LOW and High levels and 3rd LED for pulse inticator if there are fastergates that normally can not be detected. 

There are 2 version of the PCB's, one for through hole utilizing 1/8W resistors for beginers bit hessitant soldering SMD components and SMD version that are more endeverous and wish to solder 0603 components and practice their surface soldering

STL files for case can be found at      http://PCBhut.comt/Products/LogicProbe/index.html

A Microcontroller version can be found at  http://PCBhut.com/Products/LogicProbe-2/index.html