My friend wants a door bell that uses a real bell. I was wondering if I could use her adjusting wireless door bell to send an impulse to a solenoid which could then move the bell somehow. The door bell only uses 4.5 though, so that could be a problem in terms of activating the solenoid. On ebay, it's mostly car parts but I did find these: http://cgi.ebay.co.uk/New-Ledex-Pus...0QQihZ004QQcategoryZ16219QQrdZ1QQcmdZViewItem - they need at least 9v and I'm guessing a greater voltage is needed for a fuller force.
My diagram shows the bell in yellow being pulled by a string in pink/red by a blue solenoid, attached to a green wall. The only problem is that when the bell swings back, it will overtighten then string and apply a force to the solenoid. Maybe the solenoid should push the bell directly, but then it still needs to be so that the bell wont swing back and hit the solenoid.
Will a relay be needed to switch the solenoid on to say, two nine volt batteries? What search terms should I use to find the parts on ebay? This all seemed really simple until I started thinking about it... :/
My diagram shows the bell in yellow being pulled by a string in pink/red by a blue solenoid, attached to a green wall. The only problem is that when the bell swings back, it will overtighten then string and apply a force to the solenoid. Maybe the solenoid should push the bell directly, but then it still needs to be so that the bell wont swing back and hit the solenoid.
Will a relay be needed to switch the solenoid on to say, two nine volt batteries? What search terms should I use to find the parts on ebay? This all seemed really simple until I started thinking about it... :/
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