DP-666 TEF6686 High Sensitivity Radio

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DP-666 Manual
DP-666 Video
DP-666 GitHub

DP-666 Firmware :

DP-666_v2.11.5_240918	Please set the SPI rate to 27MHz to reduce screen interference.
DP-666_v2.11.3_240822	Initial release

CH340N Driver : Windows