0

I have a bluetooth module HC-06 and want to pair it to my Arduino UNO. The thing is when I researched how to do so, I got different answers. What pairing should I use? Thank you in advance. I have highlighted the differences.

First version: https://www.instructables.com/id/Add-bluetooth-to-your-Arduino-project-ArduinoHC-06/

HC-06>>>Arduino

VCC>>>>3.3v

GND>>>>GND

TXD>>>>RXD

RXD>>>>TXD

Second version: http://42bots.com/tutorials/hc-06-bluetooth-module-datasheet-and-configuration-with-arduino/

HC-06 <<>> Arduino

HC-06 Ground GND <<>> GND

HC-06 VCC pin <<>> 5v

HC-06 TX/TXD pin <<>> Arduino RX

HC-06 RX/RXD pin << resistors >> Arduino TX

[![enter image description here][1]][1]

[![enter image description here][2]][2]

Improve this question

1 Answer 1

Reset to default
1

Which you use depends on two factors: the HC-06 carrier board you have, and which Arduino you are using.

If your carrier board has (and most do) a 3.3V regulator then you power the board from 5V.

If your Arduino is a 5V Arduino (such as an Uno) then you need a voltage divider on the (arduino)TX->(hc)RX pins otherwise you risk damaging the bluetooth module.

Improve this answer
4
  • Thanks. How can I tell the carrier board of the HC-06 only by looking at the device itself. I have no manuals or other information about it. Commented Apr 18, 2017 at 20:03
  • @B.Parvi Post a picture. Commented Apr 18, 2017 at 20:25
  • [1]: i.sstatic.net/jPIZS.jpg [2]: i.sstatic.net/gPEJb.jpg Commented Apr 18, 2017 at 21:03
  • @B.Parvi Ok, that's one of the normal cheap eBay carriers. Yes, it has a voltage regulator. Give it 5V on Vcc. Commented Apr 18, 2017 at 21:04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.