RN2483/RN2903 Breakout Boards

RN2483/RN2903 Breakout Board


This breakout board offers an affordable solution for makers working with the popular RN2483 LoRa transmitter from Microchip, widely used for LoRaWAN, which operates at 433mhz and 868mhz. It is also compatible with the RN2903, which operates at 915mhz. The layout of this breakout board is based on the the datasheet reference designs. This board breaks out all 14 GPIO pins to a row of 0.1" pin header, and the power and serial communication pins to a second row of 0.1" pin header.

The original impetus for this board came from a number of Espruino users in Europe working with LoRaWAN. The RN2483 is very well regarded for this application, but breakout boards affordable for hobbyist use were not available, yet the design of these modules makes use without a purpose made breakout board virtually impossible. That's why this board was designed. The pin layout for the serial and power pins is designed such that it can be plugged into breadboard alongside an Espruino Pico, and the pins will line up - though they can of course be used with any microcontroller system. See this thread for additional background: http://forum.espruino.com/conversations/277687/ Need a breakout board for some other part with an unusual package like this? Contact me.

Parts required

  • RN2483 (or RN2903, depending on your region)
  • 1x8 pin 0.1" pin header (or other connector) for power and serial connections.
  • 2 SMA antenna connectors, board edge mount (to match your antennae)


  • 1206 or through-hole (0.2") capacitor, for decoupling (on the top of board, next to RN2483)
  • 1117-series 3.3v voltage regulator in SOT-223 package (ex, ZLDO1117)
    • Capacitors appropriate for input and output on regulator (per datasheet), in through-hole or 1206 SMD.
    • Input and output capacitors for above regulator - sizes from 1206 to 6032 will fit on the extra large pads
    • 1x14 pin 0.1" pin header for GPIO connections

Revision History

  • Rev. C
    • Improve silk
    • V-groove panelization
  • Rev. B
    • Fix silk
    • Tweak bottom layout
    • ENIG surface treatment
    • Pads for larger caps on regulator
    • Supply cap next to the RN2483 can now be through-hole
  • Rev. A
    • Improve silk
    • Add mounting holes
    • Break out RST
    • Longer pads for easier soldering
    • TX and RX positions swapped to match Espruino
    • pads on bottom for regulator + caps

Customer Photos