well thats no answer to my question :/
I want to power a servo Motor with a 9V-Battery.
Servos are normally only rated to 6 V
Are the grounds on the Arduino and the Servo's power source connected? If not, the pulses from the Arduino wont be read correctly.Marsha
The servos are okay with 6v. Note that the Arduino itself is not. If you put it into Vin, the arduino will be getting 4.x volts, due to the dropout on the garbage regulator the Arduino boards use. But it's too much to supply direct to the 5v pin (you could use that LDO to get the 5v, and put the 5v output of that into the 5v pin - but if you do that, you must not connect it to USB while it's powered that way, lest you risk damage to the board)
Mhm im not sure if I understood what you tried to tell me :/ So i place 4x 1.5V in serial = 6V. THose 6V goes direct to the servos. Parallel to that, 6V goes to the Vin of the Arduino. Shouldn't be a problem, or? On my other arduino, i feed it with 9V into Vin. works fine. I have readt, that Vin shouldn't be >12V, so the onBoard-LDO gets too hot and damages the board. Well, i think i need special akkus for servo Motors? Btw: there are two servo-Motors to feed :/
Thank you for your answers.I want to power the whole system by one Power-Supply. So, I need a battery with big capacity, light and high current. Price doesn't matter. I connect this battery to the servo-motors via LDO (5V). Parallel to that, i connect it to the Vin of the Arduino.. So the battery has to be >7V?Maybe, 5x AA (7.5V)? But its not a nice solution... there are a only attachment for 4x AA, not 5x.