diff --git a/docs/source/robot_building/best_practices/servo-power-usage.rst b/docs/source/robot_building/best_practices/servo-power-usage.rst index 8e029df6..8ae4c086 100644 --- a/docs/source/robot_building/best_practices/servo-power-usage.rst +++ b/docs/source/robot_building/best_practices/servo-power-usage.rst @@ -1,7 +1,29 @@ Servo Power Usage Best Practices --------------------------------- +There are many best practices that teams should keep in mind regarding servo usage. -.. todo:: - Add servo power usage best practices content. +Voltage Compatibility +^^^^^^^^^^^^^^^^^^^^^ +It is important to make sure that the servo you are using is compatible with +the port you are plugging it into. Most servos are designed to accept a range +of voltages which you can find in the spec sheet from the manufacturer. The REV +Control Hub and the REV Expansion Hub both provide 5V to servos, while the +goBILDA Servo Power Injector, REV Servo Power Module, Studica Servo Power +Block, and REV Servo Hub all provide 6V. + +Current Draw Limits +^^^^^^^^^^^^^^^^^^^ +Each pair of servo ports on the REV Control Hub and REV Expansion Hub is +limited to 2A. Additionally, the 6 servo ports and +5V auxiliary part have a +maximum of 5A total. Therefore, it is recommended to only place servos on ODD +or EVEN ports, and not both, which means only placing up to 3 servos on each +Control or Expansion hub. Teams should also be mindful of the 20A fuse on the +which limits the full electrical system. + +Power Source +^^^^^^^^^^^^ +The power from each servo port is only for powering servos connected to that +port, and servos should only be powered for the servo port they are connected +to. The Competition Manual prohibits teams from mixing power between devices. See the :doc:`Servos <../../control_hard_compon/rc_components/servos/servos>` page for background on servo ports and power.