cmcullington
lvl.1
United States
Offline
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djiuser_hIsBWaIkrHwC Posted at 11-27 17:32
hi. i have lenses with hardstops. when i tried to use the auto calibrate function the motor didnt recognise the stops and tried to keep going although it already hit the stop. it almost broke my lens. how did you do the calibration with your hardstop lenses?
Those motors have a pretty decent amount of torque, so the issue I had the first time I tried calibration was that the motor was able to physically push the lens away and continue rotating with almost no resistance other than scuffing up the lens's gear teeth.
My solution was to press the opposite side of the lens towards the focus motor, putting pressure towards each other so they don't push away, during calibration. The motor was able to find the hard stops for me with that method.
If you had a separate issue, where the lens didn't move and the focus motor just kept trying to push through the hard stop, I'd be sure to try my method with a hand ready to pull the USB-C cable from the focus motor so as to avoid any damage to your lens.
Unfortunately, that still only solved for calibrating hard stops when used with the virtual focus wheel in the Ronin app (the dial that remaps that calibration from 0-100). This hard stop calibration isn't communicated to the front focus dial on the RS2 for some reason, so the front focus dial will smack right into your hard stops and keep trying to push if you're not careful. In other words, until DJI finds a way to send the hard stop calibration from the Ronin app to the front focus dial, you'll have to be very careful to not accidentally pass the hard stops when using the dial for focus.
EDIT: I did just notice that there was a firmware update from 3 days ago. I'll be installing that today to see if any of these issues are remedied!
EDIT 2: Install the new firmware! It gives a menu directly in the RS2's interface that allows for focus motor calibration (without the app) and applies those hard stop limits to the front focus dial! Problem solved for me. |
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