As long as the input signal terminal of a square wave signal 50HZ, then the control signal pulse period duration of the high level can control the speed and reversing and stopped. The duration of a high level pulse corresponds to a speed. High level of 1 ms to 1.5 ms, the steering gear forward (1 msec forward the fastest, the slower the closer to 1.5 ms, 1.5 ms Servo stall), the high level of 1.5 ms to 2 ms When the servo reversing (1.5 ms servo stops, the closer two milliseconds faster reversal, 2 ms the fastest reversal).

The steering gear with neutral adjustment potentiometer (pry open the shell to see the board), when debugging high pulse can be set at 1.5 ms, observe whether the stall steering, that if we turn on the adjustment potentiometer device, until stopped until this is complete zero.

 

Model: DS04-NFC

For HM / Cars / Robot 
Weight: 38g 
Dimensions: 40.8 x 20 x 39.5 mm 
Torque: 5.5kg/cm (at 4.8V) 
Speed: 0.22sec/60 ° (at 4.8V) 
Operating voltage: 4.8v-6v 
temperature : 0 ℃ -60 ℃ 
Current: <1000mA