
This is my Pi after two years of work from electronics to facing box ,thank u very much for the people friends who participate in the forum and give me some good tips,the front end is from Eric foster design, and i choose to sample two channels ,integrated and mixed with a simple Balance pot of 10K for adjust and cancel the ground minerals.audio treshold is similar of Carl design with a cmos555.i design the face in corel draw-the box is from Hammond it is a little big but is for the battery pack of NimH (12X1.2V-1600Ma) i instal inside.
I encourage all the students of the forum to realize the dream of construct yourself Pi,it is not so hard with patience and dedicacia...
Saludos cordiales a todos.Alexis
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