I've stumbled across how to remove the password from a HC 05 trying to configure my hc05 to work with my project .. anyone want to help me out with my sketch and needs feel free for this glorious info...
I haven't seen another guide for this online.
Make.sure the HC 05 is connected and set up to your serial port program and responding to at.
Simply put
AT+PSWD?
You'll get your password.
Then put
AT+PSWD= (space)
It should then ok.
If it doesn't try AT+PSWD? again then AT+PSWD=. (space) . If it still doesn't work set both your cmode and role to slave. Then try AT+PSWD?
AT+PSWD= (space)
This worked for me to remove the password.