Introduction
The new IMU has been designed to mitigate some of the issues associated with the previous IMU. The features of this unit include: >200m depth sensor capability, reliable compass heading and smaller printed circuit board.
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First set up wires accordingly to the IMU, refer to image 1. Red/gray to 3.3v, black/gray to GND, green/gray to SCL, and white/gray to SDA
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Have the wires go through the top of the board and solder on the bottom side.
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Clip the excess wires.
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Peel off the backing on the two acrylic pieces.
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With gloves, acrylic cement the thicker piece on top of the thinner piece.
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Start the epoxy process by applying some to the bottom surface. This will ensure there is no air trapped under the electronics board.
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Insert the IMU board into the epoxy.
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Pull out the IMU wires from your ROV. Should be tucked on the starboard side of your wire bundle
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Cut off the heat shrink, and strip the wires.
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Measure out the IMU wires to the stripped wires on the ROV from the starboard side of the acrylic structure. Refer to image 1.
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Clip the wires at that estimated length.
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Solder on the IMU wires to the ROV wires. Make sure the wires you are soldering together match in color.
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Use a heat gun to shrink the heatshrink around the soldered area of the wires.
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Apply hot glue to the bottom of the IMU and place on the starboard side of the acrylic structure handle.
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Make sure that the pressure sensor is facing down and the IMU is oriented towards the front of the ROV.
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Updating the software will be required on most ROVs to get the IMU to work, even if you have the previous version of the IMU.
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You need to be running software version 30.0.2 or later for it to function correctly. We recommend running the latest version.
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