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Operating Servos at Full Battery Voltage
If you are upgrading your Viper robot kit and have decided to add a servo; you will notice that when trying to run your servo it will twitch and not much else. What's happenning is that the servo is trying to draw more current than can be supplied by the tinyESC wBEC. This results in a voltage drop that resets the receiver. What can you do to supply more current?

- Or -
A cheap way to get more torque from your existing servos is to overvolt them; to run them at a higher voltage than specified. HXT-12K servos are spec'd to run at 4.8V-6V, but can tolerate up to 11V. Careful though, any higher could damage the servo electronics.
The HK-TR6A receiver can operate at 5V-7.4V safely but not much higher. Since servos must plug into the receiver, how can you overvolt them without overvolting and ruining the receiver?

Both of these situations have the same solution. Run the servos directly off the battery! Read on to find out how.

Servos have three wires:
- The first is a white/orange/yellow SIGNAL wire that tells the servo which position to turn to.
- The second is the red 5V POWER wire.
- Third is the black/brown GROUND wire that is the reference point for the others.

1. Seperate the power wire from the servo connector of each servo you will be overvolting.

2. Tie all red servo wires to the supply voltage you wish to run them at. This will most likely be the battery's positive terminal.

3. Plug the servo connectors with the SIGNAL and GROUND wires into the radio receiver like normal.

4. The receiver will still need 5V-7.4V to operate. This can be supplied by a seperate 5V-7.4V battery or by a Battery Eliminator Circuit (BEC). BEC's can be stand-alone components or can be built into different motor controllers (like the tinyESC wBEC).