Bluetooth HM-13 - Scan available devices - AT commands

Products & Technology Arduino & Seeeduino
#1

Hello, :smiley:



I have an Arduino nano and a HM-13 bluetooth module and I’m trying to discover/scan available devices (ex:MAC ADDRESSES) in the room but there is nothing on the DATASHEET about this.



I search the AT command to send at Bluetooth module.



Documentation : https://seeeddoc.github.io/BLE-dual-Bee_v1.0/

Code : <LINK_TEXT text=“https://github.com/Seeed-Studio/HM_13_S … _13_SW.ino”>https://github.com/Seeed-Studio/HM_13_SW/blob/master/HM_13_SW.ino</LINK_TEXT>



Thank you ! :slight_smile:

Florian

#2

Hi Florian,



Have you tried to set Master role and then do the scan? thanks.



Bill

#3

Hi Bill,



I am well in master role and the module is set visible; then I restart the module to take effect.

My Buetooth firmware version is v316.



The latest datasheet version for my module is at this link : http://www.huamaosoft.com/bluetoothdual_en.zip

The AT commands start at the page 16 of the file bluetoothdual_en.pdf.



But the documentation of seeedstudio is not bad : https://seeeddoc.github.io/BLE-dual-Bee_v1.0/



But impossible to find the AT command to scan available devices…



Thank you for your help :slight_smile:

Florian

#4

Hi Florian



when we use HM-13 as master role, we have to close all the ble devices around, turn on the one to be connected. the hm-13 will automatically scan and connect to it. it does not have AT commands for the scan ble devices id functions.



you can choose HM-11, it has the AT commands to connect specific ble devices. thanks.



best rgds

Bill

#5

OK, too bad…

Thank you again for your help Bill ! :slight_smile:



Florian