Those who are landing on page must be working on sending/receiving data via bluetooth between controller boards. So let’s start with how to do that.
HC05, by default acting as a Bluetooth transceiver which is ready to get pair with your smart phone to send and receive data from it. So if you want to make any mobile controlled bluetooth project you don’t need to do additional changes to your bluetooth board. But if you want to send and receive data from HC05 module to another HC05 module, you need to enter some commands in it before using them. So let’s see what are those commands.
Watch out video if reading bores you
This is the complete tutorial video about how to configure HC-05 modules in Master & Slave modes
Setting up HC05 to Enter AT Commands
Before moving towards configuring HC05 in Master or Slave mode, we first need to make our module ready to accept AT Commands.
For that we need to make connections between the controller board and HC05 module as shown in the below mentioned image. We have used Arduino Nano board for our project, you can use any of your Arduino board for this.
After making the connections, make sure you press and hold the small pushbutton on HC05 module and then power up the circuit. After powering up when the red light on HC05 module starts blinking slowly (every 2 seconds) then you can release the pushbutton. With this, we successfully configured the module to accept AT commands.
Now open up Arduino IDE and upload below mentioned sketch on your Arduino Nano board. This is the Sketch for Software Serial communication.
#include <SoftwareSerial.h>
SoftwareSerial BTserial(2, 3); // RX | TX
char c = ' ';
void setup()
{
Serial.begin(9600);
Serial.println("Arduino is communicating at 9600 baud rate");
BTserial.begin(38400);
Serial.println("HC05 is communicating at 38400 baud rate");
}
void loop()
{
// Keep reading from HC-05 and send to Arduino Serial Monitor
if (BTserial.available()) {
Serial.write(BTserial.read());
}
if (Serial.available()) {
BTserial.write(Serial.read());
}
}
After uploading this code, you need to remove USB cable connected to computer, Press and Hold the button on HC-05 module and then plug the USB cable again to power up. After couple of seconds, the LED on the HC-05 module will start blinking slowly(2sec interval). This reveals that now this module is ready to accept AT commands.
Now open up serial monitor, make sure the baud rate of Serial monitor is set to 9600. After that just type AT and press Enter. You should get the response as OK which reveals that everything is working perfectly fine.
If you are not getting response as OK, you need to cross check couple of things.
- Checking All wire connections
- Make sure the light on HC-05 is blinking at interval of 2sec, if not remove cable and press button again & then plug it again
- Try Changing the baud rate of BTSerial inside the code to 9600 or 115200 and try again
Slave Configuration
After successfully making HC-05 module to work with AT commands, now we are ready to send some commands to make them act like Master or Slave module.
For Slave configurations we need to type 3 commands
- AT+UART = 38400,0,0 <- This will change the baud rate to 38400
- AT+ROLE = 0. <- This will change role to 0. (0 = Slave, 1 = Master)
- AT+ADDR? <- This will give us the Address of the bluetooth module

That was all about the slave module configuration. Now let’s jump to master module configuration
Master Configuration
For master configuration, just remove that previous HC-05 module and insert the second one and follow the same steps to make it accept the AT Commands.
Now to configure it in Master mode, just enter below mentioned commands
- AT+UART = 38400,0,0 <- This will change the baud rate to 38400
- AT+ROLE = 1. <- This will change role to 1. (0 = Slave, 1 = Master)
- AT+CMODE = 0 <- This will allow the master module to connect to 1 single device only
- AT + BIND = Address of Slave Module <- This command will make the master module get connected to our slave module

That were the steps to configure the master module.
After Configurations
After configuring Master & Slave module, now you are ready to make communication between them. Just connect both the module on different controller boards and just power them up simply. After couple of seconds both the modules will get connected with each other.
You can confirm that they are connected by looking at the LEDs connected on the bluetooth module. When they start blinking slowly, it reveals that they are connected with each other. After doing this configurations now you can make any project that require bluetooth communication between each other.
We have made one very interesting project using this Master & Slave communication between HC-05 modules. Have a look
Thanks designed for sharing such a pleasant thinking, postis good, thats why i have read it entirely
I absolutely love your blog.. Very nice colors & theme. Did you create this web site yourself? Please reply back as I’m hoping to create my own website and would like to learn where you got this from or exactly what the theme is named. Cheers.
Very good article. I will be experiencing many of these issues as well..
I really like and appreciate your post.Much thanks again. Great.
Thanks a lot for the blog.Much thanks again.
Everything is very open with a clear explanation of the issues. It was definitely informative. Your site is useful. Thanks for sharing!
Thank you for your blog post.Much thanks again. Great.
Aw, this was an exceptionally good post. Taking a few minutes and actual effort to generate a good articleÖ but what can I sayÖ I put things off a whole lot and don’t manage to get anything done.
I truly appreciate this article post.Really thank you! Cool.
Wow, great article.Much thanks again. Really Cool.
hydroxychloroquine 200 mg price https://www.hydroxychloroquinex.com/
buy plaquenil online friends program
plaquenil package insert doctors prescribing hydroxychloroquine near me
order plaquenil online
Way cool! Some extremely valid points! I appreciate you penning this post plus the rest of the website is also really good.
http://hydroxychloroquinex.com/ plaquenil tablets 200mg buy online
hydroxychloroquine pills for sale buy plaquenil 200mg what is generic for plaquenil
where can i buy plaquenil buy plaquenil 200mg
hydroxychloroquine 200mg for sale online buy hydroxychloroquine over the counter hydroxychloroquine tablets for sale
hydroxychloroquine where to buy online
buy generic plaquenil online plaquenil 200mg price
plaquenil 400 mg generic plaquenil online
hydroxychloroquine for sale mexico shipping order plaquenil online
hydroxychloroquine for sale online buy plaquenil over the counter
canada pharmacy hydroxychloroquine buy hydroxychloroquine 200 mg hydroxychloroquine generic
https://hydroxychloroquinex.com/ purchase hydroxychloroquine
plaquenil 200mg friends program buy plaquenil 200 mg
hydroxychloroquine for sale over the counter buy hcq tablets
http://hydroxychloroquinex.com/ buy plaquenil online friends program
plaquenil hydroxychloroquine
hydroxychloroquine sulfate 200mg order hydroxychloroquine online
plaquenil 400 mg hydroxychloroquine 200mg tab can you get hydroxychloroquine otc
hydroxychloroquine 200 mg price otc hydroxychloroquine for sale
generic plaquenil online what is hydroxychloroquine
generic plaquenil hydroxychloroquine pills
cost of generic plaquenil plaquenil generic hydroxychloroquine sulfate 200 mg
buy hcq tablets buy 200 mg plaquenil
hydroxychloroquine otc https://hydroxychloroquinex.com/
does hydroxychloroquine require a prescription http://www.hydroxychloroquinex.com/
order plaquenil generic alberta https://www.hydroxychloroquinex.com/
hydroxychloroquine generic names
hydroxychloroquine tablets buy online buy hydroxychloroquine pills hydroxychloroquine online
order hydroxychloroquine online
hydroxychloroquine buy online plaquenil online canada
plaquenil 200mg http://hydroxychloroquinex.com/
generic hydroxychloroquine 200mg
great points altogether, you just gained a brand new reader. What would you recommend in regards to your post that you made a few days ago? Any positive?
I really like and appreciate your blog article.Really looking forward to read more. Fantastic.
plaquenil 400 mg where can i buy hydroxychloroquine
hydroxychloroquine without a doctor prescription evo pharmacy hydroxychloroquine
buy hydroxychloroquine online cheap http://www.hydroxychloroquinex.com/
https://www.hydroxychloroquinex.com/ buy plaquenil generic
plaquenil 200mg price hydroxychloroquine generic names
https://www.hydroxychloroquinex.com/ buy 200 mg hydroxychloroquine
https://hydroxychloroquinex.com/ other names for plaquenil
http://hydroxychloroquinex.com/ does hydroxychloroquine require a prescription
where can one get hydroxychloroquine
hydroxychloroquine online canada http://www.hydroxychloroquinex.com/
generic hydroxychloroquine 200mg https://hydroxychloroquinex.com/
It’s an awesome article in support of all the online people; they will obtain advantage from it I am sure.
buy plaquenil pill kiteboarding https://www.hydroxychloroquinex.com/
buy 200 mg hydroxychloroquine can you get hydroxychloroquine otc otc hydroxychloroquine for sale
where can you buy hydroxychloroquine hydroxychloroquine buy online generic plaquenil
hydroxychloroquine tablets buy plaquenil package insert
buying plaquenil online
http://hydroxychloroquinex.com/ plaquenil 200mg price
http://hydroxychloroquinex.com/ hydroxychloroquine 200mg for sale online
http://hydroxychloroquinex.com/ can you get hydroxychloroquine otc
buy plaquenil over the counter hydroxychloroquine 200mg for sale online
where to get hydroxychloroquine otc http://hydroxychloroquinex.com/
hydroxychloroquine buy online hydroxychloroquine sulfate hydroxychloroquine for sale online
http://hydroxychloroquinex.com/ order plaquenil pills
hydroxychloroquine 200mg
I quite like reading a post that can make people think. Also, many thanks for allowing me to comment.
buy plaquenil friends program http://hydroxychloroquinex.com/
hydroxychloroquine canada online http://hydroxychloroquinex.com/
cheapest plaquenil online plaquenil side effects eyes buying hydroxychloroquine online
hcq online sale http://hydroxychloroquinex.com/
where can you buy hydroxychloroquine hydroxychloroquine plaquenil 200 mg tablet
generic name for plaquenil hydroxychloroquine online without a prescription
hydroxychloroquine where to buy online online doctor to prescribe hydroxychloroquine
plaquenil indications https://www.hydroxychloroquinex.com/
Hey, thanks for the article post. Really Great.
You reported that well! how to write good essays in college cpm homework help phd thesis introduction
Really appreciate you sharing this post.Really looking forward to read more.
Hello there! I could have sworn I’ve been to this web site before but after browsing through some of the articles I realized it’s new to me. Regardless, I’m certainly delighted I came across it and I’ll be bookmarking it and checking back often.
After I originally commented I seem to have clicked on the -Notify me when new comments are added- checkbox and now every time a comment is added I get 4 emails with the exact same comment. There has to be a way you can remove me from that service? Thanks a lot.
Normally I don’t read article on blogs, but I wish to say that this write-up very pressured me to check out and do it! Your writing style has been amazed me. Thank you, quite nice post.
Thank you ever so for you blog post.Really thank you! Want more.
boathouse apartments all bills paid apartments waco tx apartments in georgetown ky
Great post about this. I’m surprised to see someone so educated in the matter. I am sure my visitors will find that very useful.
We are a team of volunteers and starting a new project in a community in the same niche.
Major thanks for the article.Much thanks again. Awesome.
I must thank you for the efforts you’ve put in penning this blog. I am hoping to check out the same high-grade blog posts by you later on as well. In truth, your creative writing abilities has motivated me to get my very own blog now 😉
Very good information. Lucky me I recently found your website by accident (stumbleupon). I’ve book-marked it for later!
Good blog you have here.. It’s hard to find excellent writing like yours nowadays.I really appreciate individuals like you! Take care!!
Hey, thanks for the blog post.Much thanks again. Keep writing.
Major thankies for the blog post.Really thank you!
Is anyone here in a position to recommend Padded Bras? Thanks xx
Major thanks for the blog article. Fantastic.
I truly appreciate this blog article.Much thanks again. Will read on…
Major thankies for the post.
Thank you for your blog article.Really looking forward to read more. Keep writing.
I love your information, thanks for showing us
Vbjmrf – proquest dissertation Aipenk trrcbz
Fantastic blog post.Really looking forward to read more. Really Cool.
Say, you got a nice blog post.Really looking forward to read more. Want more.
Great article post.Really thank you! Cool.
download lagu seperti kisah rizky febian
I appreciate you sharing this article.Really looking forward to read more. Great.
I would like to thank you for the efforts you’ve put in penning this blog. I am hoping to check out the same high-grade blog posts from you later on as well. In truth, your creative writing abilities has motivated me to get my own site now 😉
[url=http://www.google.co.nz/url?q=https://big2dickporn.club/2022/06/21/Ш№Щ†-Щ‚Ш±ШЁ-ЩѓШі-japanische-ШЈЩ…ЩЉ-ШЁЩ„ШЇШ§Щ†-Ш¬ШІШ±-Ш§Щ„Щ…ШЩЉШ·-Ш§Щ„Щ‡Ш§ШЇШ¦.html]Ш№Щ†-Щ‚Ш±ШЁ-ЩѓШі-japanische-ШЈЩ…ЩЉ-ШЁЩ„ШЇШ§Щ†-Ш¬ШІШ±-Ш§Щ„Щ…ШЩЉШ·-Ш§Щ„Щ‡Ш§ШЇШ¦[/url]
Hey, thanks for the blog.Really thank you! Keep writing.
Pez sugar exponga el tiempo de televisión bytedance revele la \forma correcta\ de cargar el purificador de pescado
Very nice post. I simply stumbled upon your blog and wanted to say that I’ve truly enjoyed browsing your blog posts. In any case I will be subscribing to your feed and I’m hoping you write once more very soon!
zyrtec glaucoma generic claritin – zyrtec medication
I am so grateful for your blog post.Much thanks again. Will read on…
I am so grateful for your blog article. Cool.
Really informative blog.Really looking forward to read more.
Excellent blog you have got here.. It’s difficult to find excellent writing like yours these days. I honestly appreciate people like you! Take care!!
A round of applause for your blog.Really thank you! Really Cool.
Great article post.Much thanks again. Cool.
Hello, I log on to your blogs on a regular basis.Your humoristic style is witty, keep doing what you’redoing!
Muchos Gracias for your blog.Much thanks again. Will read on…