Hardware

Semtech

That’s an easy one to come by. The Semtech SX1272MB2xAS LoRa Mbed shield is arduino compatible shield and Nucleo boards have the corresponding connector. Technical brief:

  • SX1272 Low Power Long Range Transceiver

  • 868MHz to 915MHz

  • 14dBm output

  • LoRa modulation as well as FSK/OOK

STMicroelectronics

As mentioned the STM32WB55 serie is the target here and the P-Nucleo-WB55RG is a nice board to play with. Technical brief:

  • STM32 family with M4+M0 cores (dual core)

  • 2.4GHz capable with 802.15.4, BLE4/5, ZigBee, OpenThread protocol stack firmware

  • On-board ST-LINK

  • USB connectors, 3 LEDs, buttons

  • Battery socket

The combo

Once hooked up (it’s a no brainer) here is the resulting object.

_images/STM32WB55-SX1272-1.jpg _images/STM32WB55-SX1272-2.jpg

Never forget to plug the antenna prior to powering up the boards. You may damage the RF amplifier output (although it’s a rather low power one). Of course, buying two of each is a bit necessary for Ping Pong.