Hot sale Ble low-cost nRF52840 USB Dongle with external antenna nRFsniffer firmware

April USB Dongle 52840

A small and low-cost nRF52840 USB Dongle Form Factor with external antenna

The April USB dongle 52840 is shipped with the Adafruit nRF52 Bootloader after Jan 17 2025. The bootloader is a CDC/DFU/UF2 bootloader. UF2 is an easy-to-use bootloader that appears as a flash drive. You can just copy .uf2-format application images to the flash drive to load new firmware

Firmware For Dongle 52840

The USB dongle nRF52840 is flashed with firmware 

nRF Sniffer for BLE

 from Nordic.

Note: Please contact us if you want to pre-flash the LOGITacker firmware.

Key Features For Dongle 52840

nRF52840 flash-based ANT/ANT+™, BLE SoC solution

Button and LEDs for user interaction

Super Small Form Factor

Onboard USB bootloader with buttonless support (Adafruit nRF52 Bootloader)

Onboard external antenna

USB support

Hardware Description For Dongle 52840

The nRF52840 Dongle can be used as a development platform for the nRF52840 SoC. It features user configurable LEDs and a button. In addition to radio communication, the nRF52840 SoC can communicate with a computer through USB.

The USB dongle is very similar with Nordic's USB dongle PCA10059. But it has less pinouts and button.

Buttons And LEDs For Dongle 52840

The nRF528540 Dongle is equipped with a LED (LED1), a multicolor RGB LED (LED2), a user configurable button (SW1)

The LEDs and button are connected to dedicated I/Os on the nRF52840 SoC.

SW1 - P1.06

LED1 - P0.06

LED2

Red - P0.08

Green - P1.09

Blue - P0.12

SWD Interface For Dongle 52840

On the front side of the nRF52840 Dongle, there are connection hole for the SWD interface.

Pinouts P1 (from square soldering hole)

GND

VCC

SWDIO

SWDCLK