Or: how to use a bluetooth module and MIT’s app inventor to create a wireless serial link between an android phone and an arduino board.
The circuit is as simple as it gets so you probably already have most of them.
You will need:
- arduino board
- bluetooth serial module (I used a btm222 module on a breakout board with an inbuilt regulator )
- an LED
- resistor (100ohm)
- wires
- breadboard
The only problematic part here is the bluetooth module. There are different modules all over the internet so be sure you check the pinout in the datasheet of the one you get as it can differ.
Video:
Source: instructables
{ 5 comments… read them below or add one }
Hello, Im trying to accomplish the same setup. I have my app made from App Inventor and I have my sketch done and working on my arduino. I can turn an led on/off from the serial monitor but Im trying to get it to work over BT. 91 turns led on, 90 turns led off. Im using bluetoothclient.sendbytes but I cant seem to get it to work. any help?
Try asking the original author (at the end of the post, after Source)
If you have any problems just ask them there. I suspect that the problem is caused by data types. If your computer has bluetooth or you have a bluetooth dongle just connect with it, open putty and see what the app sends
I’m starting a project that is very similiar to yours and looking for a bluetooth module that will be able to communicate atleast 30ft.
What is the max distance you can reliably communicate to your BT module from your phone?
Try contacting the author via instructables