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| | Two Airscrew are operating a Merry-Go-Round
To operate that thing, it will be enough to switch it on and off. But it can
be done much more complicated and produce a ROBO Pro program with foreward,
backward, slow and quick rounds and the sounding of a horn.
The Construction
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The thing is very simple, if you have the (old)
parts for it : Basis plate with an axis in the middle and an old slip ring
on it with an wide red wheel on it. The current comes from contacts on the
to lanes of the slip ring.
On the wide red wheel to static parts are mounted, with motors and
airscrew on there end. And for decoration purposes a 'Männeken' behind
each motor.
And somewhere a beeper.
The interface should be connected with a long (quite longer) cable, to
operate it without hacking you own fingers when the thing is running.
Fore those, who only want to program : two fixed motors with a lamp
(instead of the beeper) will be noisy enough to have fun with programming.
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The Main Program
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Is very simple : One sub call followed by the
next. A loop could be installed to have the fun repeated endless.
StartHupe : Sounding the horn for starting.
Anlauf : Starting slow and then come so quick to be nearly invisible.
Lauf8 : Drive it for 10 seconds with full speed.
Lauf48 : Operate it alternating with speed 8 (full) and speed 4 (half).
Sirene : Sounding the horn for the grand final.
LaufR : Fullspee back.
Lauf8 : Fullspeed foreward again.
Auslauf : Slow down ending with reverse stream brake.
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Anlauf : Loop for Increasing the Speed, local Variables
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The motor ist started with the lowest speed
level. The speed will be increased by 1 in steps of 0.5 secs until
reaching the maximum 8.
The loop is constructed with a local variable n, the command '+1' and a
simple if A>8.
Because of n is a local variable, it is initalized to 1 with each call
of Anlauf. The loop therefore run from 1 to 8. |
Lauf48 : Driving with alternating Speed
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A loop again, which runs 5 times. In this case a level 1 loop command is
used in combination with level 3 command. This loop is more convinient to
use, if no variable is needed.
The motor run with alternating power level 2 and 6, each for 2 secs
always on right turn. It can be done on some different ways, try it.
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Sirene : High and low sounding on the Horn
This time two loops are nested : The outer one is a simple for counting the
highs and lows. Increasing and decreasing is done with two variable controlled
loops. The local variable is used in both. Because of it is used in an outer
loop it must be initialized eached time to 1 for the first loop, it comes to the
secon loop with the value 9 and is decremented to 8 the start value.
Auslauf : Slow down Ending with reverse stream brake.
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All elements are known. A downto loop with variable and coming to stand by
reversing the motor direction.
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Update (dd.mm.yy) : 10.03.2005
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