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Could someone do me the favor of running their head through a "cruise and shoot" while measuring the resistance between the tip and bottom ring of their stereo-jack camera cable (one end plugged into t he head and the ohm-meter on the other)? Mine is open-line except when the head is trying to trigger the camera (as expected), but when it closes the circuit, there is still 70 ohms resistance. This is causing me a bit of trouble in getting my servo (for pressing the shutter) to move. I just wondered if this is normal.
On a side-note: how do you open up the housing on the arm? I took out the two big screws on the cover and the four small ones around the hand-control jack. It still seemed stuck at the bottom; I didn't want to force it, since I may have missed a screw somewhere.
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jriley wrote:
On a side-note: how do you open up the housing on the arm? I took out the two big screws on the cover and the four small ones around the hand-control jack. It still seemed stuck at the bottom; I didn't want to force it, since I may have missed a screw somewhere.
you have to unscrew the bottom base plate, there you get access to two screws holding the arm housing
no need to unscrew the 4 screws around the jacks
look here: http://www.autopano.fr/wiki/action/view … %A9canique
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jriley, the Merlin does not use a relay; when the contact is established, it is like having a diode in the loop. The diode grab 0.7V of the applied voltage (from camera); this can be an issue. Second, it only works in one sens, so try to reverse the connection...
Be sure not to drain to much current from your servo.
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Paul wrote:
jriley wrote:
On a side-note: how do you open up the housing on the arm? I took out the two big screws on the cover and the four small ones around the hand-control jack. It still seemed stuck at the bottom; I didn't want to force it, since I may have missed a screw somewhere.
you have to unscrew the bottom base plate, there you get access to two screws holding the arm housing
no need to unscrew the 4 screws around the jacks
look here: http://www.autopano.fr/wiki/action/view … %A9canique
Maybe I am wrong, but that diagram seems to show which screws are needed to remove the entire arm. I just want to remove the plastic cover.
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fma38 wrote:
jriley, the Merlin does not use a relay; when the contact is established, it is like having a diode in the loop. The diode grab 0.7V of the applied voltage (from camera); this can be an issue. Second, it only works in one sens, so try to reverse the connection...
Be sure not to drain to much current from your servo.
Oh. A diode, do you say? Color me red-faced. What are the odds that I could connect up in the wrong direction about 5 times in a row 
, when the odds of doing the right way are 50/50? Tried it again this morning and, of course, did it the wrong way first , then reversed it and everything was cool 
. I was trying to go the wrong way on a one-way street, so to speak. I had even convinced myself that I had screwed up circuitry internal to the head. To quote Bugs Bunny:
Last edited by jriley (2009-02-11 19:12:46)
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yeah ...
the two small screws you need to unscrew are just within the red circle but 90 degree towards the housing in relation to the 4 screws which fix the two black metal parts of the orion
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