Found a use for a crappy servo

[BrianG]

Neil, if you are going to power lights from the servo's motor outputs, you should still use a resistor. The only thing saving the LED right now is the low servo input voltage (minus the H-bridge v-drops), but running LED(s) directly like that will severely shorten their life. Theoretically, the current through the LED is only limited by the wiring: (Vsupply-Vf)/resistance. But since the LED Vf value does change with current, it will work for a while.

[What's_nitro?]

Originally Posted by BrianG

Neil, if you are going to power lights from the servo's motor outputs, you should still use a resistor. The only thing saving the LED right now is the low servo input voltage (minus the H-bridge v-drops), but running LED(s) directly like that will severely shorten their life. Theoretically, the current through the LED is only limited by the wiring: (Vsupply-Vf)/resistance. But since the LED Vf value does change with current, it will work for a while.

What he meant to say was:



Sorry I couldn't resist!