Modifications

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803 octets ajoutés ,  8 novembre 2021 à 14:16
Ligne 32 : Ligne 32 :  
{{ambox|text=If you use the "Power Distribution Board for Romi Chassis" {{polpl|3541}}, it defaults to getting power from all six batteries, but it can be reconfigured to be powered from four cells; see the board’s product page for more information.}}
 
{{ambox|text=If you use the "Power Distribution Board for Romi Chassis" {{polpl|3541}}, it defaults to getting power from all six batteries, but it can be reconfigured to be powered from four cells; see the board’s product page for more information.}}
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== Liberté de mouvement et signaux de contrôle ==
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== Amplitude de mouvement et signaux de contrôle ==
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{{POLImage|Pololu-Romi-Arm-utiliser-10.png|480px|Romi-Arm}}
    
Each of the servos used by the Robot Arm Kit for Romi has a different effective range of motion due to the arm’s geometry. Please note that it is possible to drive the servos in a way that they physically bind the arm and cause them to “fight” each other, which could result in damage to servos or the Robot Arm. Most servos are intended to be used with the 1000 µs to 2000 µs pulse width range commonly used in RC systems; however, many of them can accept a wider range of inputs and will continue responding to them accordingly (moving farther and farther from neutral until they hit their mechanical limits and possibly destroy themselves). The Robot Arm accessory takes advantage of this increased range for the gripper servo. If you followed the assembly instructions correctly, the full range of motion of the gripper servo should correspond to pulse widths from about 500 µs (fully open) to 2400 µs (fully closed). Please note that there could be some unit-to-unit variation in the servos, so if you notice some buzzing when there is no load on the servo, you might try adjusting these values.
 
Each of the servos used by the Robot Arm Kit for Romi has a different effective range of motion due to the arm’s geometry. Please note that it is possible to drive the servos in a way that they physically bind the arm and cause them to “fight” each other, which could result in damage to servos or the Robot Arm. Most servos are intended to be used with the 1000 µs to 2000 µs pulse width range commonly used in RC systems; however, many of them can accept a wider range of inputs and will continue responding to them accordingly (moving farther and farther from neutral until they hit their mechanical limits and possibly destroy themselves). The Robot Arm accessory takes advantage of this increased range for the gripper servo. If you followed the assembly instructions correctly, the full range of motion of the gripper servo should correspond to pulse widths from about 500 µs (fully open) to 2400 µs (fully closed). Please note that there could be some unit-to-unit variation in the servos, so if you notice some buzzing when there is no load on the servo, you might try adjusting these values.
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{{POLImage|Pololu-Romi-Arm-utiliser-11.png|480px|Amplitudes de mouvement de la pince}}
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{{POLImage|Pololu-Romi-Arm-utiliser-12.png|480px|Dimensions du Micro Gripper avec position du Servo Feedback.<br />Unités en mm et en [pouces].}}
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Similarly, based on the assembly instructions, the full range of the lift servo should be from 1000 µs (fully raised) to 1900 µs (fully lowered), and the full range of the pivot servo should be from 1200 µs (fully down) to 1900 µs (fully up). Again, this might differ slightly due to unit-to-unit variation in the servo.
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{{POLImage|Pololu-Romi-Arm-utiliser-20.png|480px|Amplitudes de mouvement en hauteur}}
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{{POLImage|Pololu-Romi-Arm-utiliser-21.png|480px|Amplitudes de mouvement de basculement}}
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{{Pololu-Romi-Arm-TRAILER}}
 
{{Pololu-Romi-Arm-TRAILER}}
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