Shared projects

Simple Logic Probe

by Raedkit.
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2 layer board of 3.68x1.01 inches (93.35x25.73 mm).
Shared on October 24th, 2013 18:21.

Simple logic probe with resistors,transistors, and LEDs. The pin on the left side is for a probe which could just be a right-angle header pin. The right side is for a screw terminal for hooking in alligator clips,banana clips, etc. The transistors I used are 2N3906 for Q1, and 2N2906 for Q2. One LED indicates logic high, and the other indicates logic low.

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