3

I upload code into arduino nano using a self-made PCB with bluetooth using this method. I was initially using Arduino Nano (chinese Clone, the one with CH340G) and Bluetooth module HC-05 (version 3.0) (Lets assume this bluetooth is BT1)

At command response for BT1

AT+NAME?
+NAME:H-C-2010-06-01
OK
AT+POLAR?
+POLAR:1:1
OK
AT+VERSION
VERSION:3.0-20170601
OK
AT+UART?
+UART:9600,0,0
OK

All the things were working perfectly till the new nano as well as latest version of bluetooth arrived.

Bluetooth problem: I was trying to configure the newer bluetooth BT2 and I faced the error highlighted in code.

AT Commands response for BT2

    AT+NAME?
    +NAME:HC-05
    OK
    AT+VERSION?
    +VERSION:4.0-20190815
    OK
    **AT+POLAR**
    **ERROR:[0]**
    AT+UART?
    +UART:9600,0,0
    OK

The problem I am facing is I am unable to change the state pin with AT+POLAR command. I think this version of bluetooth has different AT Commands. If anyone knows about this particular problem please help.

Also I tried uploading code using old bluetooth to a newer version of Arduino Nano (New bootloader OPTIBOOT) and it was successful. Needed to change the baud rate of program as well as Bluetooth to 115200.

Improve this question

0

Reset to default

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.