This is a module to interface to MMDVM hotspot modems which replaces the Raspberry Pi and allows you to connect your modem to BlueDV running on your iPHONE or PC via either USB or BlueTooth LE.
With this board, you open up many options on how you can use your MMDVM modem.
The primary option is to run BlueDV on the PC and connect to the MMDVM modem via USB.
See it in operation here...
Second option is you can run BlueDV on your iPhone ( Android version still in development ) and connect it to the MMDVM modem via Bluetooth Low Energy. No pairing required. You only need power from a phone charger of phone power bank.
With BlueDV you can easily see on your phone all the details you might normally see on an OLED screen when running Pi-Star or on the PiStar Dashboard.
And yet another option is this device allows you to connect your MMDVM modem to a Raspberry Pi using the USB connection on the PI and then run Pi-Star.