Jl-spp Driver
Before buying a JL-based module for a project, confirm that SPP drivers are available for your target OS – or be prepared to write your own serial bridge using a generic Bluetooth stack.
If the USB-based Jieli module shows as ttyACM0 or ttyUSB0 , set permissions: jl-spp driver
: Sometimes standard Bluetooth SPP drivers are available via Windows Update. Before buying a JL-based module for a project,