Servo Driver

The Servo Driver is little and cheap device which can drive one servo motor and an optional relay. It is mainly intended for driving points as well as semaphores. But you use them for everything which needs a servo motor.

The optional relay is switched when the servo is halfway it’s movement. This makes the relay suitable to drive a frog of a point.

You could also use the relay to power tracks leading to the point. This can be used for flank protection or create powerless sections for analog layouts.

When the Servo Driver is used to control a semaphore signal. The relay could than be used to control a section of tracks. You can make a section powerless after a semaphore or you can use the relay to control an ABC section before the semaphore.

Connecting a Servo Driver

The servo motor can be connectly plugged on the header with the brown wire to the outside. The relay module can be connected using jumper or dupont wires.

The Servo Driver is powered by 5V. You can use either the left or the right connectors for this.

The switch(es) can be connected to the three pole screw terminal.

frog juicer
flank protection
powerless section for analog track
powerless section behind semaphore
ABC breaking section before semaphore

You can stack several Servo Drivers side by side to transfer power and ground. It is also possible to solder a two-pole screw terminal on the place of the female header. That makes it easier to connect power wires to the first module in the chain.

Controlling a Servo Driver

Controlling a Servo Driver can simply be done with one single toggle switch or two push buttons. If a switch is operated, the servo motor will slowly move from one end to the other. The two onboard potentiometers can be used to configure the servo’s positions.

The Servo drivers are compatible with diode matrices. So it is possible to set a complete street of points with a press on a button.