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RIG
- 2
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Rig-2 was conceived, designed and built specifically for the
mini-helikite mini-helikite
which allows a maximum load of 250 gr.
The objective was to obtain a full-featured remote controlled
rig (pan, tilt, shutter, screen) under 250 grams in weight.
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List
of components Rig-2
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Function
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Model
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Weight
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| 10
megapixel digital camera (lightned) |
Premium
DCA
366 - 10megapix
|
gr.95
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| Sevo
PAN (continuous rotation) |
Hitec
HS-55 |
gr.
9
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| Sevo
TILT |
Hitec
HS-55 |
gr.
9
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| focus,
shutter and zoom interface |
J-Tronik
-
Switch
Doppio Opto
|
gr.
5
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| 4
channel 40 MHz radio receiver |
Jeti
PPM
(FM) |
gr.
7
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| 2.4
GHz 10mW video transmitter |
Range
video |
gr.
2
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| LiPo
Battery 7,4 volt 450 mAh |
Estreme
20C |
gr.
30
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| Switching
regulator (camera 3,3 volts) |
Dimention
Enginering SR
3.3 |
gr.
4
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| Switching
regulator (reciv/trasmit. 5,0 volts) |
Dimention
Enginering SR
5.0 |
gr.
4
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| Aluminium
supporting structure |
. |
gr.
17
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| Wiring,
Pan gears, bolts, clips, etc.c... |
. |
gr.
23
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TOTAL
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gr.
205
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As
seen in the table the final weight is 205 grams.
15 grams of the Picavet suspension or pendolum need to be added.
However, we should take into account an additional weight saving
of 43 grams for the helikite (replacing the modular carbon slats
with one single lighter piece). In addition, we can lighten
it by a further 50 gr by replacing the original support with
a Picavet system
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| In
conclusion: |
- 205
(rig2) + 15 (picavet) = 220 grams
- We
subtract 43 + 50 = 93 grams of weight saved on the helikite
- We
get 220-93 = 127 grams load, compared to the theoretical
load of 250 g indicated by the manufacturer
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Some
interesting facts about the construction technique of the
Rig-2
Streamlining
the digital camera's weight
UA significant contribution to reducing the final weight of
the rig was given by the lightening of the digital camera.
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| As
you can see from the image many of the components on the camera
are useless and can be eliminated without compromising or limiting
its operation. |
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PREMIER
DCA 366 Digital Camera 10 mega pixel
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| Complete
with memory card without batteries |
gr.
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157
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| Stylus
Pack 2 |
gr.
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49
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| TOTAL
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TOTAL
gr.
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205
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After
the elimination of unnecessary components gr. 95
Deleted items for a total grams. 62 + gr.49 (AA) = gr. 111 saved |
Focus
and shutter control
For the Rig-1 a J-Tronik
- Double Switch Optos interface was used. |
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As
written in manual
"Double Switch is a special version of the 'RC Switches'
family, specially designed for testing digital cameras which offer
two positions (focus and shooting) on the shutter button. The
two outputs are controlled by the same RC channel and are programmed
separately, selecting two different points of intervention of
the same control " |
Connecting
the switch to the camera
Occorre intercettare i contati elettrici del pulsante a doppia
corsa (messa a fuoco + scatto). Di solito il pulsante è montato
su uno stampato che contiene anche la ghiera di selezione delle
modalità di ripresa. Lo stampato deve essere smontato per accedere
ai contatti che si trovano sulla faccia nascosta.
A questo punto è possibile effettuare la saldatura. Nel rimontare
lo stampato è stato tagliato il telaio in plastica per far posto
ai nuovi contatti. Da notare che il pulsante di scatto continua
a funzionare regolarmente in parallelo allo switch. |
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