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Bluetooth & IR Remote – Elegoo Arduino Smart Robot Car Part 2 APK PC

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In the second part of the series on the Elegoo Smart Androide Car, I’ll show you how to use both the Bluetooth and IR remote control features.

Smart Androide Car Kit from Elegoo – https://www.elegoo.com/product/arduinocarv3-0/
Full article at https://dbot.ws/robcar2
More articles and tutorials: https://dronebotworkshop.com
Join the conversation on the forum: https://forum.dronebotworkshop.com
Subscribe to the newsletter and stay in touch: https://dbot.ws/dbnews

If you need to know how to put the car together please see the first video.

The Elegoo Smart Androide Car Kit has several features, including Line Following, Collision Avoidance, Bluetooth Remote, and Infrared Remote. Today we will examine the Bluetooth and Infrared remote controls. Both will allow you to drive the car using a remote control

The Bluetooth remote makes use of the popular HC-08 Bluetooth module, which is attached to the Arduino Uno that forms the basis of the androide car design. To facilitate using the module Elegoo has provided an app for both Android and IOS devices, I’ll be showing you how to set up and configure the Android version.

The infrared (IR) remote control uses a popular IR remote that is included in the Elegoo kit. The custom Arduino shield on the androide car has an IR receiver module.

Elegoo has provided sketches to use both remote controls. I’ll go over the code with you, including a fix I needed to apply to get the car working properly.

Here is what you will learn in this video:

00:00 – Introduction
01:44 – Understanding Bluetooth
06:36 – Elegoo Bluetooth App
08:44 – Defining keys
12:22 – Bluetooth Blink Sketch
15:04 – Bluetooth Car Sketch
21:44 – Fix for turning problem
22:25 – IR Remote Intro
26:34 – IR Blink Sketch
31:56 – Controlling the Car with IR Remote
39:50 – Comparison of both remote control methods

Even if you don’t own the Elegoo kit you can still benefit from the video and the accompanying article, as what is shown here will apply to almost any Arduino-based androide car design. But if you are starting from scratch I do recommend the Elegoo Smart Androide Car Kit, it’s a great value and it makes building your first androide car both easy and fun.

Please subscribe to the channel so you can be among the first to know when I release the third video in this series where I will work with the Collision Avoidance and Line Following features of this androide car.
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  • My Smart Robot Car v.3.0 Plus came with a BT16 Bluetooth module, which uses Bluetooth 4.0 BLE. To avoid the need to unplug the module for programming, I modified it to put a switch in the Tx and Rx lines (like the Elegoo PenguinBot, which has a blutooth/upload switch). Unfortunately, I couldn't get the Bluetooth module to work, either I damaged it when fitting the switch or it was already faulty (the indicator light was very dim).

    I purchased a HC06 bluetooth module as a replacement, but this would not work with the Elegoo BLE app. It would, however work with an alternative app, "Arduino Bluetooth Controller" (Guimig Apps).

    I now have a BT16-a module on order which is identical to that provided by ELEgoo so should work with the Elegoo BLE app. This module is not easy to obtain. The module HM10 might also work as it also uses BLE 4.0.

  • I got the same "FFFFFFFF" hex code for repeat sequence for any button pressed. So I can't use "UNKNOWN" variables. If I don't include the UNKNOWN in switch/case statement, will it still work?

  • At about 12:53 you declare 'char getstr' as a global variable, even though it is only used in the 'loop()' function and it's value is assigned and never changed inside the scope of that function. Typically, for something like this, common practice is to use a local function variable rather than a global, since it is not globally assigned or important outside of that function. I was wondering if there is an underlying reason for this with Arduino Uno? Hardware optimization? Memory Allocation? Or is this just the way that you like to do things?

  • I am having trouble controlling my car with the app. LED goes on after i upload the "bluetooth car" file to uno board. However, I have absolutely no control over the car once in the app on android. The app also states to "go to the elgoo website and download the latest tutorial" I am having trouble on that part as well.

  • Wondering if you can explain why the Rocker Control would not work on the App…DIY works fine…IR works fine too…I have been able to get everything else to work and have even been able to manipulate the code

  • hey i used the bluetooth on my computer but i was able to get it moving its not fully built yet but i burned my finger on the bluetooth because it got hot very quickly like a minut passed and it was on and i took it out and i burned my finger i am not going to return to this subject i could not get any help im only in 6th grade and people in 8 grade in groups still struggle i was surprised how far i've gotten with this product but for now i'll rather sell it on ebay

  • WELL ,JUST GOT THE CAR KIT ,DELIVERED 2 DAYS AGO AND STARTED TO BUILD THE ROBOT. TO MY DISAPPOINTMENT THE KIT CAME I THIN CARDBOARD BOXES, SO I DIDNT GET THE PLASTIC CASE WHICH I ALLREADY HAD ALLOCATED IN MY HEAD FOR ANOTHER PURPOSE. ALSO A GOOD INSTRUCTION MANUAL, BUT NO CD WAS PROVIDED. I GUESS ELEGOO ARE CUTTING COSTS. ON CONSTRUCTING THE EARLY STAGES OF THE BOT I FOUND MISSING M3BOLTS AND M3 NUTS.ILL BE CONTACTING ELEGOO ABOUT ALL THESE ISSUES CONSIDERING THE MONEY I PAID, I M NOT IMPRESSED. I LOVE THE VIDEOS THOUGH AS THEY STEERED ME BETTER THAN THE MANUAL. MANY THANKS.

  • Your videos are great. Really looking forward to a dedicated video on Bluetooth / using Bluetooth modules with arduinos. Hope that it’s still the plan to make a video on that topic!

  • Great workshop. Is it possible to program the car to only go in a straight line and very slow as for dolly camera work? I would like to attach the Osmo Pocket on top of it? Would it be also possible to make the car go in large circle around a product which I am going to show like a motorcycle? Thanks.

  • I'm reading that the HC-08 supplied with the robot car is a fake technology based on the HM-10 module. I'm having trouble pairing with my android phone and I'm thinking of switching to the HC-05 bluetooth module I dont know if that will work since BLE and bluetooth are not the same protocols. Maybe just switching to the HM-10 module will work? Any suggestions?

  • Thanks for this video. Been trying to pair our little robot to phone for days. A few useful nuggets from your video and we are now in business! Wonderful 🙂

  • Hello, I have an issue with the IR part.
    First of all, the code available on the elegoo site is different from the one that you show. There are no define UNKNOWN_Values on the elegoo version.
    Secondly, and the most problematic is that on my IR remote, all the key seem to send the same key when I keep a key down. They all send me 4294967295 or 2747854299 🙁
    Do you have an idea why?
    Thx in advance!
    Edit: I copy/paste your code from your website and it's working fine. But I don't understand why when I use the serial monitor, all keys send me 4294967295 when they are keep down. Any idea?

  • I have an hc-05 Bluetooth module. It mostly Works fine, it connects to phone but if i send data to the arduino from the phone it don't do anything. I tested it with software serial but if I send letter for example 'a'
    i just get strange question marks and squares. Can anyone help me how to fix this, or why it is thoing this?