Würth Elektronik Proteus-e Bluetooth Low Energy radio module

The Proteus-e radio module is the latest in Würth Elektronik’s Proteus Bluetooth Low Energy series. The focus of the module is on basic Bluetooth functionality in order to address price-sensitive applications.

The radio module is based on the Bluetooth Low Energy 5.1 standard and includes certificates of conformity for CE, FCC, IC and TELEC. Despite the integrated antenna, the product is only 7 x 9 x 2 mm in size, which is a third smaller than the Proteus-III module. For applications with the user’s own firmware development, the module is offered under the name Ophelia-I, which means a radio module as pure hardware.

The product is based on Nordic Semiconductor’s nRF52805 chipset, which includes a 64 MHz Arm Cortex-M4 processor, 192 kB of flash memory and 24 kB of RAM. The maximum output power is 4 dBm and the maximum data rate is 2 Mbps. In power-saving mode, the module — which was developed for mobile applications — requires only 0.3 µA. Connection timing, advertising packets and timing, beacons and UART can be freely configured.

Würth Elektronik offers an evaluation board for easy commissioning and testing. With its help, the module can be connected to microcontrollers for application development. The company also provides design-in support and offers firmware development services on request.