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Well, sometimes we need to switch something by position change or movement... It is easier than you thought!!!! I am going to cover 2 kinds of "motion" sensors in this instructable.
The first one is a ball-based vibration detector. It detects any kind of movement. It's only disadvantage is that the contact time is really short at this sensor, so you have to connect it to a very sensitive circuit or prolong the signal length by a programmed PIC, somehow like Xyzzy did in his DIY RumblePak for Nintendo DS.
The second one is a tilt sensor (well, it is ball-based, too). This is the sensor used in my other project, home-made Guitar Hero controller. It is very simple and still quite effective!!!
The first one is a ball-based vibration detector. It detects any kind of movement. It's only disadvantage is that the contact time is really short at this sensor, so you have to connect it to a very sensitive circuit or prolong the signal length by a programmed PIC, somehow like Xyzzy did in his DIY RumblePak for Nintendo DS.
The second one is a tilt sensor (well, it is ball-based, too). This is the sensor used in my other project, home-made Guitar Hero controller. It is very simple and still quite effective!!!
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Signing UpStep 1First type - components needed
So you gonna' need the following components:
- a piece of thicker and harder copper wire
- a spring (e.g. from a pen)
- an iron ball (e.g. from a ball bearing system) - of course proportional to the other components
- soldering-iron and some solder
- and of course a bit of hot glue
So here it is how it worx:
The spring starts to move (or rather vibrate) because of the mass of the ball (you know, the friggin' inertial force _). If the movement is big enough, the ball makes contact with the copper wire (both physically and electrically).
- a piece of thicker and harder copper wire
- a spring (e.g. from a pen)
- an iron ball (e.g. from a ball bearing system) - of course proportional to the other components
- soldering-iron and some solder
- and of course a bit of hot glue
So here it is how it worx:
The spring starts to move (or rather vibrate) because of the mass of the ball (you know, the friggin' inertial force _). If the movement is big enough, the ball makes contact with the copper wire (both physically and electrically).
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(Now where did I box up my Vic-20 with cassette tape storage and ... 300 baud modem?)