enable USB support opkg install kmod-usb-core kmod-usb-uhci kmod-usb-ehci kmod-usb2 Get bluetooth installed on WRT first: (assuming you already have USB support installed) opkg install bluez-daemon (not sure if this is required) opkg install bluez-utils (many things didn't look quite right in the logs so I rebooted just to be safe) got many "Not enough free handles to register service" errors in the log... but pushing on regardless... hciconfig hci0 up hcitool lescan --> my monitor showed up as "Flower care" (which can also be retrieved with: gatttool --device="MACADDR" --char-read 0x03 ) ! recently I got connection refused when trying to connect with gatttool. (confusingly) this was resolved by: btmgmt le on reading the FW version seems to work 0x0038 - Reading returns 7 bytes - 1 byte battery level and 6 ASCII chars of firmware version 2.7.0 0x0033 - You need to write 0xA01F to this handle to enable real-time data read...