: Full hardware support for Bluetooth LE (including Bluetooth 5), Thread, Zigbee, Matter, and proprietary 2.4 GHz protocols.
Because the nRF52840 is a blank hardware slate, developers and hobbyists frequently share .rar archives on platforms like GitHub or engineering forums to distribute resources. If you have downloaded or encountered a file named 52840.rar (or similar variations like nrf52840_project.rar ), it most likely contains one of the following: 1. Custom or Pre-compiled Firmware 52840 rar
: Features an ARM CryptoCell cryptographic co-processor, full-speed USB 2.0, and an NFC-A tag for seamless tap-to-pair functionality. 📁 What Does a "52840.rar" File Usually Contain? : Full hardware support for Bluetooth LE (including