How to fix overheating

[plugsandsparks]

Probably should have asked the obvious first, but both servos are 9V suitable aren't they?

The connections shown show that 9V is directly suppled to the servos, normally servos are 5V, but can be 9, or 12V as well.

The servos are indeed 5V rated but it varies up to 6.4, i think there is a resistor up top to drop the volts ( i hope) - lol

 

[Julie.]

The servos are indeed 5V rated but it varies up to 6.4, i think there is a resistor up top to drop the volts ( i hope) - lol

Yeah, I think it's a pot, so it could be set to zero ohms, putting too much voltage if they are indeed 5V versions (which is the standard).

Looks a bad option to me, it would be better to use a proper 5V supply, or if they are small loads the regulator in the UNO - take the 9V supply direct to pin Vin, and the supply to the +ve of the servos from 5V

But if the design calls for 9V or 12V servos ...

 

[stevethesparks]

Probably should have asked the obvious first, but both servos are 9V suitable aren't they?

The connections shown show that 9V is directly suppled to the servos, normally servos are 5V, but can be 9, or 12V as well.

Good call

 

[Mike Johnson]

Are they Digital or Analogue servo's, most servo's where designed to run on a four cell conventional battery pack i.e. 6volts, these where inevitably changed for a four cell rechargeable pack at 4,8volts, most used a five cell pack to compensate for lack of speed and make up too 6volts, hot off the charger these where nearly always over 7volts, so I don't think the battery is the issue.

 

[stevethesparks]

@Erebos
Any progress with the overheating servo?

 

[Erebos]

@Erebos
Any progress with the overheating servo?

I tried to change the servo twice but both overheated, so I bought another one and miraculously it worked. It worked for two days without problems, it did not overheat. But today it stopped going out of nowhere. It did not overheat, but stopped spinning properly and I dont know why.. everything works except the servo 2.

 

[stevethesparks]

Have you checked their working voltage or confirmed they are suitable for the supply being used?