tinygo.org/x/drivers@v0.27.1-0.20240509133757-7dbca2a54349/sx127x/README.md (about)

     1  # SX127x LoRa Radio
     2  
     3  This processor comes in several different packages.
     4  
     5  ## Adafruit LoRa Radio Featherwing
     6  
     7  https://www.adafruit.com/product/3231
     8  
     9  This is the LoRa 9x @ 900 MHz radio version, which can be used for either 868MHz or 915MHz transmission/reception - the exact radio frequency is determined when you load the software since it can be tuned around dynamically. They can easily go 2 Km line of sight using simple wire antennas, or up to 20Km with directional antennas and settings tweaks.
    10  
    11  ### Connecting
    12  
    13  To use the LoRa Featherwing with a Pybadge/Gobadge, you need to connect some pads on the board itself. Solder some jumper wires as follows:
    14  
    15  RST  -> A
    16  CS   -> B
    17  DIO1 -> C
    18  IRQ  -> D 
    19  
    20  You also need to connect an antenna. The easiest is to cut a small piece of wire to the correct length based on the desired frequency:
    21  
    22  EU868 Mhz - 34.54 cm
    23  
    24  You can also use a fancier solution such as a uFL SMA connector with matching antenna.