Radio module is ideal for proprietary solutions

The compact Ophelia-III radio module is offered as part of Würth Elektronik's 'Build Your Own Firmware' concept. The manufacturer allows custom radio solutions in the 2402MHz to 2480MHz frequency range to be developed with this module, which comes without firmware and an SDK. Applications range from the widely used BLE for specific use to proprietary, highly customised radio protocols.

Ophelia-III is based on the nRF52840 chipset from Nordic Semiconductor, a 32-bit ARM Cortex M4F CPU, and is equipped with 1MB of flash memory, 256kB RAM, and various interfaces (UART, SPI, I²C, ADC, 17 GPIOs, Nano-SIM). The module, measuring 12mm × 8mm × 2mm, is more compact than similar models on the market. Thanks to its optimised antenna design, it features low power consumption at a transmission power of +8dBm. In sleep mode, the current drawn is just 0.4µA – making the module ideal for battery-powered devices. The company places particular importance on delivering freedom in application development with this radio module. Ophelia-III has an antenna connector, an internal antenna, and 17 configurable GPIOs.

The radio module is based on the same hardware platform as the proven Proteus-III BLE module, whose certification documents can be reused to certify Ophelia-III solutions. An evaluation board and an SDK are available for application development.