HC-06 Bluetooth module can't read?

Projects General Guidance
1

Hey Guys,

I recently bought the HC-06 Bluetooth module.
I connected it as following:

(Ofcourse I used a Arduino Nano, not that thingy)
When I do a Serial.println("HAY"); my bluetooth module loops HAY
But when I try to Serial.read, and print that it does not recieve anything.

I also tried it with the software serial lib and used pin 2,3. This does not work either.

So, can somebody help me let the bluetooth module read?

Like when i put 1 in the bluetooth terminal, the arduino will put a LED on or something?

2

What is at the other end of the Bluetooth connection?
Are the devices pairing correctly?

Are you aware that a HC06 can only act as slave. You need a HC05 to be master (or slave).

As usual, if you want help post your code.

And please use the code button </> so your code looks like this and is easy to copy to a text editor

...R

3

Only a slave, this means this module can only sending data out?!

4

I have ordered the HC-05, I feel really stupid, tought the HC-06 was just a upgraded version.

Thank you for your help!

5

The HC-06 should work fine. While it is slave-only and not an upgrade, that has nothing to do with your problem, and I bet replacing it with an HC-05 will be a complete waste of time.

The real problem may be in your code, which is apparently a secret, or it may be in the wiring. This may be just badly executed. It is also common practice to use just 1k and 2k resistors rather than what you have but I don't know if the difference is fatal.

You might find the following background notes useful

http://homepages.ihug.com.au/~npyner/Arduino/GUIDE_2BT.pdf
http://homepages.ihug.com.au/~npyner/Arduino/BT_2_WAY.ino

6

Robin2:
What is at the other end of the Bluetooth connection?
Are the devices pairing correctly?

It would be helpful if you answered these questions.

As Nick_Pyner mentioned, it would also be good to know what your code is.

The HC-05 is unlikely to fix the problem (depending on what the problem is) but it will be a useful device to have.

BTW, When I first heard about HC-05 and HC-06 modules, I also assumed the HC-06 was an upgrade of the HC-05 (but don't tell anyone).

7

DuaneDegn:
BTW, When I first heard about HC-05 and HC-06 modules, I also assumed the HC-06 was an upgrade of the HC-05 (but don't tell anyone).

Likewise - so I only have a HC06

@Terick, a slave can send data in both directions. The difference is that a slave can only pair with another device that acts as master so you cannot pair two HC06 devices.

That is why I asked the questions that you did not answer - and why answering them might have saved you some money.

...R