Manual

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LynxmotionSSC32UServoControllerBoard
ElectronicsGuide
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Digital vs Analog vs “Smart” Servos
Analog Servos
R/C Servo Basics
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WhendealingwithaRemotelyControlled(“R/C”)servo,itisimportanttoknowthefollowing
terminology:
● Case(normallyplastic,sometimesaluminum)
● DCmotor(normallybrushed,sometimesbrushlessormoreexotic)
● Gears(whichreducethemotor’sspeedandincreasethetorque)
● Spline(connectionfromthelastinternalgear;fitsintotheservohorntomakeitrotate)
● Horn(theplasticormetalpartwhichcanbeusedtoconnectotheritems)
● Potentiometer(anabsoluteangelsensorusedtoprovidetheservo’sposition)
● Electronics(controlsthemotion)
● 3pincableandconnector(0.1”standardspaced)
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White/yellow/orange=Signal(Pulse)
Red=4.8Vto6V(VS)
Black/brown=GND
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R/Cservosuseaformof“PulseWidthModulation”(PWM).Inthiscase,theservo’selectronics
arewaitingtoreceivearepeated5Vsignalwhichittimestoseehowlongthatsignalstayson.
FormostRCservos,a500uslongpulse(0.5ms)at5Vwouldrotatetheservohornto90
degrees;a2500us(2.5ms)long5Vpulsewouldrotatethehornto+90degrees;thereforea
1500uspulsecorrespondsto0degrees(centered).Thispulseneedstoberepeatedevery
~20ms.
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