Run this example from the command line with:
node eg/motor-LUDUS.js
const {Board, Motor, Motors} = require("johnny-five");
const keypress = require("keypress");
const board = new Board();
board.on("ready", () => {
  const motors = new Motors([
    Motor.SHIELD_CONFIGS.SPARKFUN_LUDUS.A, // Left
    Motor.SHIELD_CONFIGS.SPARKFUN_LUDUS.B, // Right
  ]);
  let speed = 100;
  function controller(ch, key) {
    if (key) {
      if (key.name === "space") {
        motors.stop();
      }
      if (key.name === "up") {
        motors.fwd(speed);
      }
      if (key.name === "down") {
        motors.rev(speed);
      }
      if (key.name === "right") {
        motors[0].fwd(speed * 0.75);
        motors[1].rev(speed * 0.75);
      }
      if (key.name === "left") {
        motors[0].rev(speed * 0.75);
        motors[1].fwd(speed * 0.75);
      }
    }
  }
  keypress(process.stdin);
  process.stdin.on("keypress", controller);
  process.stdin.setRawMode(true);
  process.stdin.resume();
});