@Jeremie, @DJ,

I don't mean to be rude. Don't think that the aforementioned servos, that I have, are died of "abuse". I have been using high torque servos with high stress usage in other applications. They won't die like these so easily. (I did see others burnt some of them, though, but NOT me.) Never mind, those servos are very expensive, compared to those sold by ezrobot. Say for example, a comparable Futaba High-voltage (7.4v) High Torque (~15kg/cm) costs around USD150, even a cheaper Hitec has a price tag of USD140. (Not to mention JR which has a price tag of more than USD200.)

One more thing I wanted to comment, as to "pause" and "delay". If "pause" and "delay" are NOT added to programming the robot servo movement, what would the robot behave?

My Six behaves like a lady and dances like breeze.

I could only accept the servos are died of my "heavy" use. (I would be very careful in the future. One charge in a while without re-charge.)

regards, KC.

The kind of servos that I used to work with are those heavy duty and expensive ones. It's unfair to compare the ezrobot servo as such. If I were to do some "serious" work I'd better source some not-too- expensive but heavy duty ones to play with.

regards, KC.

A bad news. I just burnt one more (5th) servo which is used to pan the camera from left to right. I can hear a very light "pop" sound during panning and then it stopped further response.

Upon opening the servo, one of the FET burnt. Please see the burnt FET from the jpeg file uploaded.

I would recommend revisiting the use of servos in your application to ensure they provide the correct requirements. Also, visit the software configuration to ensure the max and min limits are correct understood and configured. Lastly, ensure the servos are not being used wildly between directions back and forth, etc.

If you, specifically, are experiencing issues with servos, visit the application requirements.

Thanks for your advice.

I think I have enough experience in using the servos, especially after I have "burnt" five. After replaced a new one, it works fine again. But I don't know when I will burn the sixth one on the other one, or the same one.

@DJ "You can revisit that thread to read my reply regarding that you cross-your-fingers that the mosfet burns out rather than a fire. Be happy the mosfet is damaged instead of the wires catching on fire, the battery exploding or worse..."

I use these robots with kids and am just learning about robotic- background more in software than hardware. I tried to follow this thread but some of it was way over my head. The thought of exploding servos makes me VERY nervous so I guess I need to go through the tutorials again.

I've purchased 3 robots in 2016 and had this happen to 3 servos, one pretty much out of the box. I thought it was just me but wanted to bring this to your attention since it may be an issue.

Anywho, One of the servos that died was the neck servo and I couldn't find that part on your website. The head is fine so how do I replace that servo on the neck?

Thanks a bunch for all the guidance!

Never mind- found the microserver- amazing how much I accomplish when I actually read! Might want to put that in the body parts section for newbies like me!

@kaycekwan I have read thru this thread and think the answer to the problem is to keep the servo from drawing to much current (DAH). If we put a polyfuse inline with the power lead to each servo, you could protect the servo from drawing to much current and burning out. Here is a link I found on the subject. I have had this happen once with a continuous rotation servo, so I plan to add these little resettable fuses to each of my servos. Just as a precaution.

I hope this helps.

RichardZ