Bluetooth connection with hc 05

Hi, I have a problem when I power the microcontroller which I connected to hc 05 module, I am able to pair the phone with the module but unable to connect them, whereas using bluetooth terminal I am able to connect them(the led starts to blink slowly). I hope you understand and can help me with the issue.

Maybe improper wiring. Arduino is not involved in pairing, it just provides the power. Make sure you have Rx to Tx and Tx to Tx, with a 1k 2k divider in the Arduino Tx line.

It sounds like you don't have a problem after all.

What phone are you using, and what app are you using on the phone to connect with the hc05?

Hi,
Well the problem is I don't have a way to connect bluetooth terminal app with mit app inventor, the thing I should be able to do is to open mit app inv. I made and when I click list picker to see nearby devices, there is none. I can provide the wiring and photos of the app if it would help

sub, 9. pro 2023. 23:52 Nick_Pyner via Arduino Forum <notifications@arduino.discoursemail.com> je napisao:

It won't. I suggest you stay away from app inventor and stick with a standard android terminal like that by Morisch. This is called learning to walk before you try running. Your posts are quite incoherent but any problem with Bluetooth on Arduino can probably be solved here. App inv matters are best addressed in an app inv forum.

RandomNerdTutorials ebook?

I hope you´ve already solved the problem, since it´s been some time since your post. But if you´re converting your app into an .apk and installing it in your phone, you should allow it to access nearby devices on preferences--> applications --> your app.

If you don´t do so, an empty list picker is exactly what you get...

I have been working the RNT ebook examples.
(No word back if that's what you're using.)

MIT App Inventor is a lot of trouble, the Designer part and then with the Blocks, and the puzzle pieces. The color-blind will have trouble with this arrangement.

So far as BT comms go, I prefer a BT serial terminal, too. AppInventor allows you to make fancy buttons and that like. I believe you can make apps that can access the smartphone accelerometer and so, wifi too, but I haven't gone on that far.

Just like an Arduino sketch, everything has to be in the right place (or else).

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