Editing WaterColorBot Troubleshooting
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The motors can only exert a certain amount of force. If that force is insufficient to overcome the friction from the spectra cord and moving the carriage, then the motors will not be able to move. | The motors can only exert a certain amount of force. If that force is insufficient to overcome the friction from the spectra cord and moving the carriage, then the motors will not be able to move. | ||
− | To check the level of friction, raise the brush and turn off the motors, so that you can turn the winches by hand. When you try to turn the winch, it should turn easily, and move the carriage when you do so. If it does not turn easily | + | To check the level of friction, raise the brush and turn off the motors, so that you can turn the winches by hand. When you try to turn the winch, it should turn easily, and move the carriage when you do so. If it does not turn easily, then you need to figure out why. |
The most common cause of high friction is if the two steel rods are not square to the chassis. You can check this by moving the carriage to the home corner, and making sure that all four rod-end sliders line up evenly against their stops. | The most common cause of high friction is if the two steel rods are not square to the chassis. You can check this by moving the carriage to the home corner, and making sure that all four rod-end sliders line up evenly against their stops. | ||
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A second thing to check is to make sure that the Spectra cord is routed through the grooves on the three ball bearings. | A second thing to check is to make sure that the Spectra cord is routed through the grooves on the three ball bearings. | ||
− | Third | + | Third, check to make sure that you have not ''over-tightened'' the spectra cord. If you pluck the string, and it sounds like any musical instrument other than a string bass, you probably have too much tension. |
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==== There is too much slack in the cord ==== | ==== There is too much slack in the cord ==== |