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can you explain what the resistor function is about?is this a good solution?
the resistor will protect the controller from high currents. Usually a controller port can support up to 50mA. I dont know how much current the servo will drain for the signal but if its is more than 12mA it will burn your controller(each servor will drain 13mA for example so the total current will be 62mA=bye bye mcu). The resistor will reduce the current. Just dont use a very high resistance otherwise you will be insulating the servo.And yes I think it is a good solution, it works. And if you doubt me just try it yourself. A resistor costs less then $0.01 and it is easy to manipulate.
alright, ill give it a shot, but are you sure there are no losses in torque/speed?thanks
The controller/sensors and the motors have different power supplies usually.
the resistor will protect the controller from high currents. Usually a controller port can support up to 50mA.
QuoteThe controller/sensors and the motors have different power supplies usually.im feeding my controller from the same battery that feeds the motors/sensors but after a 7805,would this make any problems?
Quotethe resistor will protect the controller from high currents. Usually a controller port can support up to 50mA.mine is atmega128 ,the pin can only supply/sink 20 mAwhat res value is good for this?
use a multimeter to measure the current
The current value will fluctuate on the screen, in which case just watch it for a bit and use the highest number you see.
do u recognize the frequency? the pwm high cuty cycle? i dont think human eyes can catch up with this
and yes oscopes CAN measure current,when you use a low value resistor(100 ohm) in the way ,silly ??
Adding a resistor changes the current,
would 4 servos control terminals draw more than 20 milli amps?