The Bluetooth module wants 3.3v logic levels so that is taken into account. The image above shows a buffer chip doing the conversion, but the Fritzing schematic on the post uses a voltage divider.

A standard Bluetooth module has to have HID firmware installed. [Dastardly] makes a homemade daughterboard–er, shield–to connect it to the Arduino.

Bluetooth 3.0 + HS, as it'll be called, promises to be markedly faster than prior iterations thanks to the reliance on 802.11, which is the same protocol used by WiFi modules, routers, etc.

Renesas introduces the RX23W module with full Bluetooth Low Energy support for system and wireless communications control on IoT endpoint devices.

The GTI-ATM3330e Bluetooth 5.3 module from GlobalScale integrates Atmosic Technologies’ energy-harvesting technology for battery-free designs. GlobalScale, an original design manufacturer (ODM), ...

Equipped for Bluetooth 6 and 802.15.4, its embedded microcontroller is a 128MHz Arm Cortex-M33, backed by 1.5Mbyte of non-volatile Rram and 256kbyte of ram, and the module has a built-in antenna.

The modules are the FC30R, a cost-effective, industrial-grade Wi-Fi module; the FCU743R, featuring Wi-Fi 4 and Bluetooth 5.2 capabilities; and the FCM740D, an MCU with Wi-Fi 4 and Bluetooth 5.2.

Bluetooth is what your Mac uses to connect to wireless devices like keyboards, mice, trackpads, speakers, and other peripherals. Generally, it's ...