Hi, I am a newbie
I am thinking of getting a power adapter to supply power from power point to MCU and servos. The problem is I don't know the current I required.
the power required by servos is as followed:
idle current: 8mA
no load running current: 280mA
test voltage: 4.8V or 6V
idle current: 8.8mA
I am using 12 micro servos and 2 stand servos, so:
12 units of micro servo need 280mA x 12 = 3360mA (for no load running only, so actual current needed may >3360mA)
2 units of standard servo need 450mA x 2 = 900mA
minimum total current needed = 3360 +900 = 4260mA ?
so I need to find one power adapter which output is 6V DC, 8A(need to be >4260mA) ? but would the current too high? I worry it could damage the MCU or Servos.
and would it be a problem if the MCU and Servos are using the same power supply?
another thing I would like to ask, could I just cut the wire of the power adapter, test the polarity (using voltmeter), and then connect it MCU board? Because I don't need the pin of the power adapter, just need direct wire connection. Also, will the polarity of the power adapter change when I use it next time?