Valiant supply light and sensor packs. They also supply motors, but we have used Lego motors since they can be built on (see below). These accessories are screwed into the terminals in the control interface, fitted on the underside of the Roamer.

Terminals
There are four numbered outputs, or pairs of terminals. Connect a light to the first pair.

The command to turn the light connected to terminal 1 on is:

This literally means, "Set Terminal 1 high."

If GO is pressed now, nothing happens! The instruction must be combined with another Roamer command. In this sequence, the light comes on for 2 seconds:

Here, the Roamer moves forward, turns then reverses into its garage. The reversing light comes on. The light turns off when the program finishes.

Using Motors with the Lights

Older 6 volt Lego motors are easy to connect to the terminals. The new 9v motors have special connectors which only connect to Lego Dacta. Cut off one ende to expose the wires.

It's fun to mount a 'helicopter' rotor onto the Roamer itself, and the noise has great appeal! There are many different ways to do this: one approach is shown on the Helicopter building sheet. Children may also make static models which are driven by the Roamer.

The same instruction is used to drive the motor. If you want the motor connected to T1 to stop while the rest of the program runs, use this command:

Literally, this means, "Set Terminal 1 low."

In this sequence, the motor connected to Terminal 1 is turned on. After 2 seconds, the motor is switched off. A light on Terminal 4 comes on while the Roamer reverses.

There is no need to insert an instruction to turn the light off. It will switch off when the Roamer finishes the Go Program.

Roamer Index