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  1. Rick L

    guitar amp

    One of my hobbies is building cigar box guitars. They are simple instruments and fun to build. Building these is what got me back into electronics. I built an amp based on the lm386 and it actually worked better than I was hoping for, now I would like to build something with a bit more power. My...
  2. Rick L

    Phototransistor question

    I am in the middle of a project and have some questions. The project is an electronic target that will detect a 4.5mm pellet traveling at 600 fps. When the pellet is detected it turns on an LED to signify a good shot. My pellet detector is a white LED opposite a phototransistor. When the pellet...
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