NODE-JIMU

This is a quick and dirty lib to control the Ubtech robots. I bought an Astrobot kit to teach some coding concepts to my daughter, and despite that the mobile app is great I wanted to have the possibility to work with it from a mac or PC. Spoofing the Bluetooth communication from the app with the robot I was able to figure out some parts of the communication protocol.

Disclaimer: I have no affiliation with Ubtech and the intention of this lib is to get even more from these awesome robotics kits.

Compatibilty

For now this code is to control the astrobot model

Installation

yarn add node-jimu or npm install node-jimu

Usage

import { Communication, Commands, delay } from "node-jimu";

const comm = new Communication("My_Jimu_CA15"); // name of the robot as seen in jimu app
const robot: Commands = new Commands(comm);

comm.connect(async () => {
  // // enable predefined animation for the eyes: red, green, blue, animation (0 - 15), eye (1, 2 or 3 for both)
  await robot.setEyesAnimation(253, 158, 254, 1, 3, 1);

  // set servo positions central, left arm, right arm, speed
  await robot.setPosition(205, 120, 120, 20);
  await delay(4000);

  // enable predefined animation for the eyes: red, green, blue, animation (0 - 15), eye (1, 2 or 3 for both)
  await robot.setEyesAnimation(253, 158, 254, 6, 3, 3);

  // set servo positions central, left arm, right arm, speed
  await robot.setPosition(190, 120, 120, 10);
  await delay(2000);

  // set eyes color red, green, blue, eye (1, 2 or 3 for both), time
  await robot.setEyes(0xff, 0x04, 0x04, 3, 60);
  await delay(2000);

  // set position again
  await robot.setPosition(220, 140, 100, 44);
  await delay(1000);

  // set wheels speed (sadly, it seems like you only can do it individually )
  await robot.setSpeed(1, 2, 0x92);
  await robot.setSpeed(2, 1, 0x92);

  await delay(2000);

  // full stop!
  await robot.stop();

  await delay(100);
  // disconnect
  comm.disconnect();

  // close
  process.exit(0);
});

Reading data

import { Communication, Commands, delay } from "node-jimu";

const comm = new Communication("My_Jimu_CA15"); // name of the robot as seen in jimu app
const robot: Commands = new Commands(comm);
comm.setDebug(true);

comm.connect(async () => {
  try {
    // get servo positions
    const p = await robot.getPosition();
    console.log("position", p);

    // get sensors data
    const s = await robot.getSensors();
    console.log("sensors", s);
  } catch (error) {
    console.log(error);
  }

  // disconnect
  comm.disconnect();

  // close
  process.exit(0);
});