Wednesday, 27 December 2017

arduino - Powering an old RC servo - Can't find the datasheet



I'm testing my arduino with servos, and my sg90 works fine for testing purpouses.


I would like to use something stronger, and my father (that in the 80s used to work with RC autos) gave me this old but promising servo.


enter image description here


I know I can't supply power with arduino if I want it to survive august, and I know all the servos work around 4.8-6v.


The problem is I can't really find any datasheet for this servo, and I would like to know at least the current drain to dimension my external power supply (or how can I misure it. All the wires are black, making it even harder).




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