HC-05 Stops working when i try to connect

Projects Networking, Protocols, and Devices
1

Hello,

I was working with the HC-05, and it was working fine during the two past days. Today it worked for a while, but then stopped working and dont let me connect to it anymore. Led is blinking when i turn on the module, but when i try to connect, it stops blinking and appears "can't communicate with HC-05" on the screen of my phone. I tried reseting arduino, reseting module, and unparing HC-05, but nothing worked and now i can't pair again with the HC-05.

I dont know what happened, it hasn't recieved any hit and it was connected to 3.3V pin on the arduino.

Thanks in advance

2

Well, i realised that it doesn't stop when i try to connect, it stops blinking spontaneously, sometimes it stops ater 3 blinks and sometimes after 20.

Pls help

3

It sounds very much like inadequate power, and you need to be more forthcoming on that matter - starting with a description of the Bluetooth, what Arduino, what power source, and an explanation of why you have Bluetooth on the 3.3v supply.

4

Hello nick and thanks for the reply. As your suspicion, it was an unstable power source, due to a bad step down DC converter that was giving downturns of voltage, i replaced it with a couple in series AA batteries and now it's working great.