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Programming examples
Copyright eltima electronic 2022
Example for drop photography with X-parameters
Task: A drop dispenser with a solenoid valve (eltima item no.: 50049) should
be used to create two drops of different sizes that fall into a water pot. These
shall create a drop collision water sculpture. A camera and a speedlight
should be triggered at the right moment to capture the sculpture.
In this setup a drop dispenser is mounted at a height of about 42 cm above
the water level. The camera takes pictures of the
drop sculpture in a flat angle from a front per-
spective. Two speedlights illuminate the scene
from behind through a diffuser of acrylic glass.
The process is time-controlled, i.e. without a light
barrier.
Process sequence: A cycle is started with the
-button. The camera, whose shutter speed is
set to bulb, is released without delay for a time
of 500 ms. At the same time, the drop dispenser
is triggered for 68 ms to generate the first drop.
140 ms after the beginning of the first drop the
dispenser is triggered again for the duration of 50 ms.
With a delay of 389 ms, the speedlights are fired to take the image.
After the 500 ms elapses, the camera output is switched off and the camera
shutter closes.
Although the drop collision shown was achieved with the times given
in this example, they are only for guidance. The times to be used de-
pend very much on factors such as the viscosity of the water, the exact
falling height and so on. It is necessary to experiment to find the tim-
ing that works best.
Important: For the X-parameters to become visible, set the system
parameter
Exp mode
to
yes
.
With the introduction of the software version 2.2.2.0, a sequence can
be started directly after confirming a value change with the
key. It
is therefore no longer necessary to switch down to the working level,
as in older versions!
Parameter list: The table below shows a possible setting of the parameters
for this task.
Basic Parameters
Value
action mode
one beam barrier
sensitivity 1 - 3
6
range
distance
dwell time
0 ms
scanning mode 1 - 3
with reflector
Output parameters
a
b
c
d
trigger
none
none
none
none
X-Parameters
X1
X2
X3
X4
device controlled
flashlight
drop dis-
penser
drop dis-
penser
camera
trigger
manual
manual
follow
manual
delay
389 ms
0 ms
0 ms
0 ms
ON time
50 ms
68 ms
50 ms
500 ms
step duration
1000 ms
140 ms
500 ms
1000 ms
repetitions
0
0
0
0
switch
a2
b1
b1
c12
next step
end
step3
end
end
synchronization
no
no
no
no