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| en:manuals:service-notes-for-mitail [2026/06/01 14:57] – [Case Replacement] darkgrue | en:manuals:service-notes-for-mitail [2026/06/06 15:01] (current) – darkgrue |
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| ==== Servo Connections ==== | ==== Servo Connections ==== |
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| Internally, the firmware refers to the servos as Servo 1 (the "top" servo) and Servo 2 (the "bottom" servo). The bottom (the one that emerges from the "bottom" of the case when the servo bracket is installed) servo cable goes to the bottom (closest to the board itself) PCB pins. | Internally, the firmware refers to the servos as Servo 1 (the "top" servo) and Servo 2 (the "bottom" servo). The bottom servo cable (the one that emerges from the "bottom" of the case when the servo bracket is installed) goes to the bottom (closest to the board itself) PCB pins. |
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| {{ :en:manuals:bottom_servo.png?nolink&600 |}} | {{ :en:manuals:bottom_servo.png?nolink&600 |}} |
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| ===== Installing Cable Pullies / Servo Horns ===== | ===== Installing Cable Pulleys / Servo Horns ===== |
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| There are seven screws holding the pully assembly halves together. Three are at the edge, near the cable slot. And four more that hold the servo horn to the pully. All seven must be removed or loosened to free the cable from the pulley (which is required if the case is being replaced). The screws are M3 × 5.75 mm, Pozidriv PZ1 drive, 7.75 mm overall length. | There are seven screws holding the pulley assembly halves together. Three are at the edge, near the cable slot. And four more that hold the servo horn to the pulley. All seven must be removed or loosened to free the cable from the pulley (which is required if the case is being replaced). The screws are M3 × 5.75 mm, Pozidriv PZ1 drive, 7.75 mm overall length. |
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| <WRAP round important 90%> | <WRAP round important 90%> |
| </WRAP> | </WRAP> |
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| ==== Pully Calibration / Resetting Servo Home Position ==== | ==== pulley Calibration / Resetting Servo Home Position ==== |
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| To do this correctly, first power up the PCB with the new servo attached directly to the board. That will center or "home" the servo before you reattach the pulley. Secondly, make sure the pulley is in the following "ten minutes to the hour" position; the topmost screw head will also align with the servo mount rib below it (note that the servo splines may not line up perfectly and may land a tooth to the left or the right slightly or a particular trail might bias more towards the center screw): | To do this correctly, first power up the PCB with the new servo attached directly to the board. That will center or "home" the servo before you reattach the pulley. Secondly, make sure the pulley is in the following "ten minutes to the hour" position; the topmost screw head will also align with the servo mount rib below it (note that the servo splines may not line up perfectly and may land a tooth to the left or the right slightly or a particular trail might bias more towards the center screw): |
