REYAXRYLR896 Lora Module SX1276 UART 868MHz 915MHz Antenna at Command FCC NCC

Works great for low data rates with very good range. Make sure you do not exceed 3.6 VDC on the transmit pin and the supply voltage pin or you will damage the unit.

very good devices.

I bought two, and also two DSD TECH SH-U09C USB to TTL Serial Adapters from Amazon.The adapters come with double female jumpers you need for connecting to the radio module.After configuring a network ID and address on each unit, I was able to successfully send data from one unit on a Raspberry PI (linux) to another unit plugged into a Mac using Python.i noticed that I needed to add a small time delay when transmitting.For an hour of work, I was quite happy with the results. All the "AT"commands are documented in the Reyax web site.I used python for sending / receiving the serial data.Receive code on Mac:import serialser = serial.Serial("/dev/cu.usbserial-B001AS3K", 115200)while True:bs = ser.readline()print(bs)Transmit code on Linux:import serialimport timeser = serial.Serial("/dev/ttyUSB0", 115200)index = 0while index < 10:index = index +1ser.write(bytearray("AT+SEND=1,5,HELLO\r\n",'ascii'))time.sleep(1)Don't forget to set the Network ID (must be same on each unit) and unique addresses.

Code info could be better. Be sure to cross the TX (Pico) to RX (module), else you will get messages echoed and not know what is happening. Also set UART baud to 9600 (the module defaults the radio to 11500 and does not need to be changed). These are two different bauds, if you don't have the right bauds here you won't see any RX.On the Raspberry Pi Pico, running micropython, two modules work with clear communication. My Raspberry Pi 3B works, but keeps crashing due to bad data (this is probably a pyserial issue).I have yet to test the communication range.

I ordered two of these. When they arrived, only one of them had the header pins installed. The second one, sealed in its ESD bag, had no headers- not even a loose ones for me to solder on myself. I sent back the defective unit, with a note about the missing header pins. When the replacement arrived it was also missing the headers.I don't have any single-row right angle header strips, so now can't use this as-is, or even try to repair it myself. And obviously, I shouldn't have to do it myself. Be aware when ordering this, you'll probably need to order some right-angle headers and solder them in yourself.

Great quality. Bought two, they worked so I got two more. Their documentation is perfect, short and and to the point.They should be able to talk to each other out of the box, but basically just give them an address:AT+ADDRESS=1234make sure they are on the same network:AT+NETWORKID=2and they should be able to communicate:AT+SEND=0,5,HelloArduino's transmit is 5v and the RYLR896's receive is 3.3v, so you'll need to level it down to control it with an Arduino. I'd recommend getting two USB to TTL converters to learn how to interface with them.Overall, amazing product, highly recommended.

These are my go-to antennas! I am using 6 of these together to communicate. They work great through thick walls and in 100+ degree conditions. Takes a little getting used to the AT commands.

Very easy to setup. I am using it with a Raspberry PI Pico. No issues! The range is great. Very reliable! I plan to utilize in my future wireless projects.