Bluetooth LED Control App with MIT App Inventor - STEP By STEP

In this tutorial, you'll learn how to use MIT App Inventor to create a Bluetooth app that controls an LED on an ESP32. We'll walk you through the process step-by-step, from starting a new project to building the app and testing the final product. Whether you're new to IoT or an experienced maker, this video is a must-watch for anyone interested in using MIT App Inventor to create apps for your next smart project.
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● MIT App Inventor: appinventor.mi...
● ESP32 Bluetooth: • ESP32 Bluetooth Classi...
● ESP32 for Beginners: • Introduction to ESP32 ...
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[@DIYTechRush]

● MIT App Inventor: appinventor.mit.edu/ ● ESP32 Bluetooth: kzbin.info/www/bejne/e4jbfmt_rdOlp9E

[@Agrarforst]

Very helpful video! I enjoyed that you focused on the important points. Keep going on like this!

[@DIYTechRush]

Glad you enjoyed it!

[@edsonkumenya5626]

Thanks man, have learnt a lot from you. Be blessed

[@patriciavidal1109]

Amazing video! You helped me a lot on my homework! TYSM

[@DIYTechRush]

Glad I could help!

[@j.anishkumar8321]

I am not getting the output...In final step the esp bluetooth is not showning in app...what to do ..please help me

[@thomasleftwite]

Very simple and effective instruction! Thank you.

[@DIYTechRush]

You're welcome!

[@ArtKrenzer]

Thanks for sharing. Clear and concise. Just what I needed

[@DIYTechRush]

Glad it was helpful!

[@FrancoisSchnell]

Great tutorial, straight to the point, thanks. Keep it up :)

[@DIYTechRush]

I appreciate it. Thank you for your interest 😊

[@fablapp]

nice tip! really a lots of interesting content you have produced!!!!

[@DIYTechRush]

I appreciate that!

[@globuglobulin-r2t]

Good! Very well explained!

[@DIYTechRush]

I'm glad it was helpful!

[@edsonkumenya5626]

How to install bluetooth library. Please help...

[@Ivan-Ko]

I have some error message: no matching function for call to 'BluetoothSerial::BluetoothSerial()', BluetoothSerial SerialBT; Can you help with it please?

[@Ivan-Ko]

Ok, the reason of this, is the wrong esp32, without Bluetooth serial 🤷‍♂️. On over board everything is fine 😁.

[@MassimilianoBellugoogle]

Have you solved the error? I'm getting the same message

[@username_6948]

thanks! watched all of your videos.

[@DIYTechRush]

I am so glad you like it 😊

[@brotherhood4627]

Thanks brooo!!!🤟

[@DIYTechRush]

No worries, enjoy!

[@farzyyyy8269]

How to makesure if the usb disconnect from the laptop...the bluetooth function still on?

[@Enderparth]

hey guys i used it on arduino it perfectly works with your own code

[@linuxrobotgeek]

Got this to work after failing with the Pico W. Even with new BT support things are still a bit rough.

[@irzfanfarizan3001]

Hi can you do tutorial to display multiple ir sensor and update to the apps using MIT App Inventor? Example parking slot. If slot 1 available the ir sensor send data to the apps and text on the saying slot available. And if slot 2 has been parked the apps will display slot 2 has been parked.

[@aohmix]

Why don't I see any bluetooth devices when entering the app? Although I have already connected the HC-05.

[@evanhewitt6847]

Sometimes you have to give the app permission to access nearby devices (for Bluetooth) in the phones settings, find the app you made under app management

[@aohmix]

@@evanhewitt6847 i was find bug. when i build app on appinventor i will not found device to conect bluetooth. if i use app old a few years ago, i will find it

[@jesus_malik]

Nice great Tutorial bruh! Clear and didactic! subscribed booo!!

[@DIYTechRush]

I am so glad it was helpful for you.

[@Alvaelectronics]

Hi , i am creating a device that has esp32 and the other device is Pi5 which runs android os an app can be installed in this os . Now , i need to connect my esp32 with the pi5 only . Can you guide how i could do this ? In my mind .. it is giving characterstic id call from esp32 and the app would have the same the characterstic app . If the app detects the characterstic uuid , then connect directly to esp32 . Please let me know if this is right or show a video on how to do this as a refernce

[@bachger4289]

Hi, why I can not see the list of BT devices on my Android smartphone after press a Devices List button?

[@JavyVC]

did you discoverd why?

[@unknown-ro4vr]

@@JavyVCI just found out cause we have not given the bluetooth permission to the app. It is because of android 12 + versions. Go to settings then app then go to the your app and then give it nearby devices permission on or give it all the permission then you will be able to see the device names

[@JacquesdeBruyn-nl5vu]

Hi there, I have been working with esp32 display boards but now that I see what can you do with this app builder, I will completely switch over. As I am used to using esp-now,, can the app communicate with WiFi?

[@Enderparth]

yes

[@gerrygalman1660]

If I use the Serial Bluetooth Terminal, it is working fine. Thanks

[@DIYTechRush]

👍

[@share_dakwah_21]

Kalo on off menggunakan waktu yang kita tentukan dimit app..ada ga videonya?

[@RyouscxreD]

hey ive made an ultrasonic distance measure, and the output is on serial monitor of arduino ide how do i make the output of serial monior to be produced on the app

[@DIYTechRush]

Check out in this video: kzbin.info/www/bejne/Z4HSg5aYacSqqdk

[@在水裡奔跑的蜻蜓]

you help me a lot and i thank you from the bottom of my heart

[@brunodragas8661]

I have a bluetooth module HC 05 and when I open the application to connect to bluetooth I don't get the list of devices?

[@DIYTechRush]

Make sure to pair your phone with the Bluetooth module and allow "nearby devices" permission from the app settings

[@JorgeVega-b9l]

Hi, how could this be done to control addressable led?

[@DIYTechRush]

Yeah, It's possible and I am gonna talk about it soon.

[@gohyanqing6171]

Hi ,may i know that why arduino nano 33 iot cannot conenct with the mit apps after following your tutorial?

[@DIYTechRush]

kzbin.info/www/bejne/fGS3YYGJnrZ8iq8

[@hambaallahygpenyayang5802]

Thankful master wish you luck

[@dbmetters]

Perfect - Thank you so much!!!

[@DIYTechRush]

Glad it helped!

[@diego.alienigena]

great video. It works! 😀 Thanks!

[@DIYTechRush]

Glad it helped

[@debabratabej4573]

HC-06 Bluetooth device is paired with my mobile. However, no device is showing in the device list.

[@DIYTechRush]

Maybe you have to add nearby devices' permission to the app from your smartphone

[@jmoses9905]

great vidio but how do i do it on iphone?

[@Enderparth]

Mit app inventor isnt for iphone. they just say that it works but it never works

[@circuitideas1981]

Your video is very beautiful, I understood clearly, thank you very much.

[@DIYTechRush]

You are welcome 😊

[@clobel55]

you understood his jargon clearly? The fucking guy can;t speak English

[@mellifluousphilosophers3817]

The reason Bluetooth devices may not appear when I press the 'Devices List' button on my phone could be due to what? I urgently need it for my internship assignment

[@DIYTechRush]

Add nearby devices permission from the app permissions

[@LearningToFly77]

How can i automatically connect to a Bluetooth Device?

[@raffazmi_8604]

why my bluetooth list not showing in listpicker , pls help

[@Bugged_games]

Blue tooth premmisne

[@marcoxp1690]

I don't know why. I have the same problem...

[@1-NIX]

Same problem I just fixed it. Go to settings >> manage apps >> then make sure the "nearby access" is allowed. Just check the app permissions and allow it.

[@acceptmycook13s]

Thank you so much i just fixed mine​@@1-NIX

[@Casperdroid5]

@@1-NIX you are a hero!

[@isaacbwahya6804]

je bien fait le code mais je n'arrive pas atrouver les elements dans le elementpick1

[@DIYTechRush]

modifier la permission de l'application

[@VINInvents]

I have a problem, mine does not detect paired devices. List picker is empty

[@DIYTechRush]

Add the "nearby devices" permission from the app settings

[@RavenTech1]

I see a blank screen when i try to select from device list, I gave the permission to nearby device from settings. still nothing shows up

[@farihaarif2973]

sameee...

[@OrangIsHealthy]

what about esp8266module?

[@OrangIsHealthy]

in neeeeeeed help :/

[@jakariasbulldozer9086]

Great tutorial, well explained, please expend its part 2 , with analog read from esp , best of luck

[@DIYTechRush]

Thank you, I will

[@slein55]

it has to be connectet via cable to the computer, I can't get it to work with external powersupply WHY??

[@BrunoHenrique-jp8ue]

i've done this and when I tried to connect the following error happened: error 503 the specified address is not a valid bluetooth MAC adress

[@dcsalg79]

With micropython and ESP32?

[@josemartinezflorez5230]

super video mil gracias

[@gerrygalman1660]

Hi Sir. Great tutorial. But why is it that the mit app cannot detect my esp32 bluetooth device? Please help. Thank you very much.

[@DIYTechRush]

You may need to add nearby devices permission from the settings of the app.

[@GIANGOLONG]

in Arduino IDE code line 16, if i want to have 2 different variables how can i declare sir

[@DIYTechRush]

You don't need to create another variable c. Just add more conditions like if(c== '2').....

[@GIANGOLONG]

hello, i do same with you but when i open app on phone and click ' Device List ' the phone can not detect bluetooth of ESP32 to connect. Can you help me

[@DIYTechRush]

Before you open the app, pair your phone with the esp32.

[@GIANGOLONG]

@@DIYTechRush how sir, i do not see name of bluetooth from esp to connect

[@J_Creative]

Nice bro keep it up

[@DIYTechRush]

Thanks 😊

[@ventv4170]

hello badly need help! i want to know to make this with light adjustment. pls help me!! i will pay

[@JoseMartinez-hg9zu]

I have a problem trying to connect via bluetooth, I get error 507 and I don't understand why my devices are well connected, if anyone can help me I would really appreciate it...

[@michaelfecke9850]

Not working on Android12 or later. AddressesAndNames: Returns the list of paired Bluetooth devices. Each element of the returned list is a String consisting of the device’s address, a space, and the device’s name. On Android 12 or later, if the permissions BLUETOOTH_CONNECT and BLUETOOTH_SCAN have not been granted to the app, the block will raise an error via the Screen’s PermissionDenied event.

[@maddisonwashere10]

loving you mate, thank you

[@Hog-n]

Thank you so so much, i was spending about an hour trying to figure out why the Bluetooth wont work. Thank you

[@weerobot]

Awesome...

[@DIYTechRush]

Thanks 🤗

[@thulasi1234-tn5xn]

CAN I GET THE CODING?

[@gurtdereli3499]

Sir, when I click Device List no bluetooth device shown up,something is wrong but I cant find out. Could you please share your code and app?

[@DIYTechRush]

I haven't saved the code, but I've created another project with all of the files included in the description kzbin.info/www/bejne/Z4HSg5aYacSqqdk

[@hanhnguyenvan5492]

Me too,do you have any solutions to solve the problem? Can you show me.Thanks a lot

[@circuitideas1981]

Sir 4 channel will provide a remote control program and app made video I am waiting.

[@HyperZettoN050]

code pls

[@thekikaz]

i think since android 13 the permission changed and you have to add a lot more to scan and pair devices... :(

[@malhardeadshot6118]

yes it does not connect even on android 12, it just pairs thats it, do u have any solution?

[@Hervelee1011]

mit can make ios app?

[@tehseen24]

Plz share .aia file link

[@mahendrasharma2619]

Please provide code

[@sansanjasthinepaguio384]

"Wake up to reality! Nothing ever goes as planned in this world." is a quote by Madara Uchiha from the anime Naruto Shippuden1234. The quote suggests that no matter how much you plan ahead of things, there is still a possibility that everything’s going to come undone. You have to face reality and stand strong even when things don’t go according to y

[@TheChhis]

List of bluetooth devices is empty. I used Iphone 13 pro max.

[@nishant_soni97]

first pair in your device.

[@Pouri1103]

دروس علم ؟🤔😄

[@zeeshankhan-gw2lv]

786 likes waaoo lucy number so I am not going to like but thanks it was very helpful.

[@aisoft1891]

thank you. here is esp32 BT code #include "BluetoothSerial.h"; BluetoothSerial serialBT; char cmd; void setup() { // esp_core_dump_init(); // initialize digital pin LED_BUILTIN as an output. pinMode(2, OUTPUT); serialBT.begin("ESP32-BT"); Serial.begin(9600); Serial.println("system esp32 bluetooth"); } // the loop function runs over and over again forever void loop() { if (serialBT.available()) { cmd = serialBT.read(); } if (cmd == '1'){digitalWrite(2, HIGH);} if (cmd == '0'){digitalWrite(2, LOW);} delay(100); }

[@Zerophil_]

i have paired my phone to the esp32, but its not showing up in list picker

[@farihaarif2973]

I see a blank screen when i try to select from device list, I gave the permission to nearby device from settings. still nothing shows up....

[@farihaarif2973]

Add the "nearby devices" permission from the app settings.... this helped me solve the problem