HamiMiami's Lego Page
Light Seeking Missile Launcher
|For Christmas 2000 my wonderful wife bought me a Robotics
After tiring of the sample projects I wanted to see what I could do with the built-in programs.
This model uses one motor to rotate in place until it detects a bright light source (I use a flashlight.). It then uses the other motor to fire the missle at the light source.
The white gear seen on left side of the launcher is part of the gearshaft connected to the cam on the opposite side.
For the missile launcher mechanism I modified a portion of the alarm from the sample projects that come with the kit.
|This view shows the wiring.
TOUCH A & B are wired to each other and then a single touch sensor activated by the cam when the missile fires. This causes both motors to brake thus stopping the model after the missile fires.
|This is a bottom view showing the differential used to rotate the launcher in place with a single motor.|
|Here's a close-up view of the launcher
mechanism. Note the touch switch (yellow) on the left. This
is to stop the model after the missile fires. The cam rotates clockwise
and should be positioned as show before pressing RUN to activate the
NOTE: The scout seems to keep motors shorted (brake mode) when turned on and not running. Turn the Scout off before manually positioning the cam as shown.
|This view shows the built-in program settings
for the launcher model.
MOTION: Loop B