Raspberry Pi Pico Tutorial - HC-05 Bluetooth module + MIT App Inventor

Welcome to the - Learn how to use the Raspberry Pi Pico Tutorial Series:

This tutorial we look at the HC-05 Bluetooth module and how to connect it to the Raspberry Pi Pico.

In the first example we create a basic app using the MIT App inventor to control an LED.

The second example we will add expand on the first project by adding multiple LEDs and a relay module.

Check out my channel for other videos on the Raspberry Pi Pico, as I will regularly upload tutorials and projects related to the Raspberry Pi Pico.

If you found this tutorial helpful, subscribe to the channel and leave a comment and welcome to the NerdCave.

Code:

If you are new to the Raspberry Pi Pico I have made a Getting started video:

[NerdCaveYT]

Hi, when playing with the HC-05 today I saw there is a tiny mistake on the schematic, the TX and RX pins needs to be swopped. I hope it helps

[armand]

Well constructed video with lots of information, thank you.

[rolandtriton]

You are so talented with this, so clear so informative iam just impressed how you made it so understandable, bug fan here

[MrBobWareham]

Thank you for explaining the code, it makes it easy to understand

[scott]

Great tutorial - especially on the App Maker

[Kattoe]

What if i don't want the led to turn on if 'led_on' is in it but only if it is that? (I dont want it to turn on if the message is 'turn the led_on')

[Johnny-ikug]

Very nice video! I guess if I want to be serious about this and make the Android app in AndroidStudio it will take days to do it, which is sad because I don't have enough time for it

[ronen]

this is a good channel, good work, if possible make some tutorials for the raspberry pico with c language

[davySv]

Awesome tutorial!
Detailed and very clear explanation.

I want to kindly ask you for advice.
If I want to use an OTG cable to communicate between the smartphone and the raspberry, how can I do it?

[conifer]

Doesn't the Pi Pico have on-board bluetooth now? so we no longer need the HC-05?

[davySv]

i'm trying since 3 weeks but it doesnt work :(
do you have miss some steps?

[davySv]

How to change a variable into the rpi script from app?
(Example: if i click a button, this button should modify a variable "counter=0" in "counter=1")

[nobodyknows]

Hey NerdCave, I am currently working on a concept to make a controller from a Raspberry Pi Pico I currently have it working via USB but wanted to incorporate bluetooth technology to allow connection wirelessly to the PC for controller functionality. Would the HC-05 work well for this, obviously ill need to write my own code and that should not be an issue. Everything I read about the HC-05 makes it sounds like it can communicate via UART and SPP. So this shouldn't be an impossible feat correct?

[davySv]

How to change a variable from app to script?

[TechHouseVids]

it doesnt work for me. i dont know what the problem is. i think its an upload problem for uploading the code could you help please? edit: it works now i had to export my app to an apk and manualy give it acces to bleutooth awesome video

[eldhosesaji]

hi i am using raspberry pi 4b and i have made an app on MIT app inventor but it doesnt connect to the app the name of the pi and everything comes up but it just won't connect. The pi connects to the bluetooth on my phone. Can you please help me and tell me why it wouldn't connect from the app please.