The Servo Block permits the simple control of up to four hobby servos. Each servo has an approximately 90 degree operating range which can be controlled by the application of a 0V to 5V signal on the appropriate input.

The Trimpot controls the rate at which the servos move to their specified target positions. This rate can be very quick (servos react immediately) or very slow.

The Servo Block has two regulators: one for the microprocessor and another for the Servos themselves. This separation helps to keep electrical noise from the servos from interfering with the operation of the microprocessor. Most servos must be supplied with voltages in the range of 4V to 6V, so they can't simply be powered from the +V line.

The onboard servo regulator can be bypassed by lifting the Servo Regulator jumper. This disconnects the regulator from the servos. Now power can be provided from an external source on the SV terminal.