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[...] what value of the transistor i needed to take note for the value of resistor. I am currently using BC327 and BC337 atm.
Oh ya, i got a bit confused with the voltage as well. The GND here refers to the GND of the microprocessor, right? How about the 0v?
I am currently using a 5v regulator to output 5v required for the servo. The servo i am using is the Hitec HS311 just for your information which required 5-6 voltage source and 3-5v signal source.The 0v is the middle point of the voltage regulator, is that right?
I am able to get my sevo to work based on your diagram. Thanks a lot. But if it is possible, can u explain the theory behind this schematics? My electronic basics is kind of weak, now trying to learn more ^^