Logitech 6100 Tail Servo 9V Capable - Electronics Help Needed

[Max2342]

Hi Freaks,

well i had a prob with my Logitech 6100 and today i found out why. A Piece of the case was broken inside and these pieces did block my newly replaced gears. Anyway... i was taking some pictures of the interal of the servo and did see that the Use Two DC/DC Switching Transistors. One is a SP8K2 and one is a SP9J2 both of them should be able to handle up to 30V. (Datasheets are available here:

http://www.alldatasheet.com/datasheet-pdf/pdf/130040/ROHM/SP8J2.html

and

http://www.alldatasheet.com/datasheet-pdf/pdf/130042/ROHM/SP8K2.html

So i am no electronics guy but so far no need for voltage regulators in a 8V setup except the heat maybe. So turning the PCB around i found a microcontroller (See attached Pictures). Seems to be a "M64611FP - DIGITAL SERVO MOTOR CONTROL FOR RADIO CONTRO" which would make perfectly sense to me.

http://www.alldatasheet.com/datasheet-pdf/pdf/99729/RENESAS/M64611FP.html

In this datasheet it is rated for Supply voltage range: 4 to 9 V

Yeahuuuuu this sounds like a tailservo capable to run 8V together with the spartan, this would be a full 8V setup.

Any electronic guy can confirm this?

Greetings

Max

[Vinger]

Just check if the Spartan can handle this servo, it has differrant framerate to about all others out there and only the Logictech and Curtis Youngblood gyro can handle it to my knowledge,

[Angelos]

Max,
the Spartan ds760 will drive this servo fine but what about the motor? Can that take the increased current that will result from the 9V ?

-Angelos

[Max2342]

Hi Angelos, thankx for your response, but are you shure that the motor is driven by this source? I mean there are two DC/DC switching regulators. Aren't they converting the voltage to another stable level anyways? I am no electronic guy so maybe someone else should take a look. And the motor did not have a label so i am unsure about it. But would be nice that way. I personally think that the thermic could be a problem.

Max

[Angelos]

Max,
there are switches; not switching regulators. They just turn power to the motor on/off. They are 4 in total (two in each chip) in an arrangement which is known as H bridge which allows the motor to run in both directions. http://en.wikipedia.org/wiki/H-bridge

-Angelos

[Max2342]

Thank you, thats why i allways say i am no eletronic guy :-). So basically all is depending on the motors capabilities now. Hmmm how do we find out what the motor can handle?

Max