EletronicCats CatWAN USB


An Open Source USB Stick compatible with LoRa and LoRaWAN with Cortex M0+. To connect, review and analyze packages of LoRa®.

The sister of the venerable JeeLink.


This CatWAN USB Stick is programmed with a special firmware image that makes it an easy-to-use LoRa sniffer. You can passively capture the data exchanges between two LoRa devices, capturing with our “LoRa Sniffer” the open source network analysis tool that we have created to use together.

This device can work in networks LoRaWAN compatible with classes A, B and C, although currently we do not have a firmware for this way of working, the CatWAN firmware is completely open source and you can find it in our repository along with the schematic. If you want to reprogram this device you can do it through Arduino IDE and its USB port or if you do not have to use a J-Link. ATMEL-ICE or a DIY SWD programmer

This device has a SAMD21 ARM Cortex microcontroller at 48Mhz with native USB 2.1, with 256Kb for programming, compatible with Arduino and Circuit Python.


  • Works with any PC, Raspberry Pi or BeagleBone, even a smartphone or tablet
  • Supports packet mode LoRa® (package mode) or LoRaWAN ™ Class A, B and C
  • Compatible with The Things Network and other LoRaWAN networks
  • Based on the RFM95
  • RX LED as reception indicator, programmable by the user
  • Easy reprogramming compatible with Arduino and Circuit Python
  • Compatible with the App LoRa Sniffer
  • Open Source


  • Connectivity: USB 2.1
  • Power Consumption: 140 ma typical TX, 20 ma idle (with power LED)
  • Receiver Sensitivity: down to -146 dBm
  • TX Power: adjustable up to +18.5 dBm
  • Range: up to 15 km coverage in suburban and up to 5 km coverage in urban areas