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    Atari Punk Console propblems

    Hello everyone, I have built an atari punk console using this schematic: Unfortunately, it does not seem to be working at all. When turned on, you here an initial click and nothing else. There is one narrow spot where it generates white noise. here is the circuit board:
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    Velleman stroboscope kit problem

    Hi, I recently decided to buy some of these Velleman kits in order to improve my soldering skills. I made the IR light barrier and it worked fine...but that is only 9VDC. This one is the stroboscope (K5300)and it runs of 110VAC! I was scared but plugged it into that wall...AND IT WORKED!!! I...
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    polarity help!

    I am a very heavy sleeper and so I am adding a 3.5mm jack to the alarm to plug my computer speakers into for louder volume. I really am wondering which wire is positive/negative that goes to the speaker. Both wires are grey, but one has a pink stripe on it. does this mean that the wire is to...
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