DF-BluetoothV3 module problems

Having problems with this module in both AT mode via serial adapter, and when pairing via bluetooth.

AT mode @38400 8N1 sometimes works, but often returns “error(0)” despite properly formed AT command (e.g. “AT+NAME=newname”) And, the module responds over and over, e.g. “OK \ OK \ OK \ OK …”

When pairing through bluetooth, I can get past the authenticationstep, but the device requests a disconnect shortly afterward, and the link light never comes on (regardless of switch position.) See output from btmon, below.

HCI Event: Command Status (0x0f) plen 4 [hci0] 9.392620
Create Connection (0x01|0x0005) ncmd 1
Status: Success (0x00)
/// STUFF deleted
< ACL Data TX: Handle 12 flags 0x02 dlen 12 [hci0] 16.627108
L2CAP: Disconnection Request (0x06) ident 4 len 4
Destination CID: 68
Source CID: 64

Has anybody got this module working?

I haven’t really used this module in AT mode: I can do everything I want in the default mode…

If you can’t get this working, we would recommend contacting the technical support of DFRobot (the manufacturer) directly:

Hope this helps,