My RaspberryPi with SMAspot returns “BT_Connect() returned -1”

This error is reported in some different scenarios;

Best Practice;
We see good results with the following setup:

In the above picture the USB hub is connected to grid power. The RaspberryPi is connected to one of the output sockets of the Powered USB hub¬†and one of the RaspberryPi’s USB ports is connected to the input socket of the Powered USB hub.

In this case the Powered USB hub supplies power to the RaspberryPi and all the device connected to the USB hub. The RaspberryPi is connected to the Hub and can communicate with the USB devices connected with the hub.

Now you could connected the Bluetooth and/or WiFi adapter(s) to the Power USB hub and should not have power issues.

For more info about the “BT_Connect() returned -1” error, see the SMAspot support forum.

For more info about the power issues of the RaspberryPi, see the Power Issue topic on the RaspberryPi forum.

If these forum could not help, please see Google

Posted in: Bluetooth, Devices, Hardware, SMA