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Recent content by Alexander8046

  1. A

    I'm trying to rig a bike horn to an alarm clock

    Thanks everyone I will try this on Saturday and let you know if it works:)
  2. A

    I'm trying to rig a bike horn to an alarm clock

    Ok I'll do that Thanks for the advice
  3. A

    I'm trying to rig a bike horn to an alarm clock

    Do you mean putting the resistor like this: Also the beeper signal is 0V when off and 1.5V when on
  4. A

    I'm trying to rig a bike horn to an alarm clock

    Hi, thanks for the suggestion. I bought a 2N3904 and did this but it still doesn't work. When I connect the 12V source the horn sounds and the voltage across the horn is 5V. Then, when the the signal from the alarm clock is emitted (0-1.5V) I can hear the horn sound change and the voltage across...
  5. A

    I'm trying to rig a bike horn to an alarm clock

    A few days ago I saw this article on Instructables.com (http://www.instructables.com/id/Build-The-Worlds-Loudest-Alarmclock/) that shows you how to rig a car horn to a cheap alarm clock. I wanted to do this so I bought everything and got to work. Parts: Motorbike Horn (12V 1.5A DC) Wall power...
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