Servos are running slow

[Its_Friday]

I am using the axon microcontroller. When i plug in one servo, it runs at a decent speed. But when i plug in a second servo, for 1 second they run at normal speed, but then they slow down. They maintain that slower speed.

Why can one servo run fast, but 2 servos can't? They're hooked up to the microcontroller, and the microcontroller is hooked up to a 7.5 volt battery pack. My best guess is that the batteries can't provide the needed amperage. Whatever the problem maybe, how can i fix this?

[Jdog]

Try plugging in the 2 servos and measure the voltage of another output port, turn on the axon and see if there is a drop in voltage. If not Try it with a different battery pack and see if it still happens. You could even use a cheap $2 4 AA holder battery pack and try that. I know that 4 AA batteries definitely has enough amperage so try that and report the results. If that doesn't work, try writing a program to control three servos and read one adc port and print out the data, plug in your two servos and make a jumper wire from the signal wire of the other servo port to the input wire of the adc port and analyze the signal with the SOR Scope.

[Admin]

the microcontroller is hooked up to a 7.5 volt battery pack

what type of battery, and whats the mAh on it? is the battery fully charged?

[Its_Friday]

the microcontroller is hooked up to a 7.5 volt battery pack

what type of battery, and whats the mAh on it? is the battery fully charged?

It's a 7.5V 1200 mAh NiMH Battery Pack

[Admin]

Hmmm what servos are you using?

This battery should be enough . . . is it fully charged?

Are you controlling the servos through the ADC pins or the non-regulated pins?

[Its_Friday]

I figured out the problem.The battery is no good. Even though i measure it at 7.5V right out of the charger, it can't last more then a minute when running the servos. Thankfully i bought a spare battery that works properly.