and would like to start with just connecting them and sending "hello from r3" and vice versa. I'm stuck on how to physically connect RYLR998 and RYLR993_lite
to either UNOs (wiring).
I found some tutorials/diagrams online that include wiring LEDs, sensors, Potentiometer Control etc. but I just need to be able to communicate from laptop A to laptop B using Arduino IDE.
Good to know. I'm glad I didn't try to connect them. Something would burn between the two
Can you please elaborate on this? Are there versions of R3 and R4 that have 3.3V instead of 5V?
I'm in the U.S., and both support 915MHz.
Here's the link to the full datasheet of each one:
R3 seems to be more popular, and R4 has more storage memory. That was the only reason. I'm still within the return window and can exchange it for either one.
Are there versions of R3 and R4 that have 3.3V instead of 5V?
No, but there exist several other Arduinos that run on 3.3V. 5V is rapidly being phased out, and will soon be obsolete. Almost all of the latest microprocessor and sensor modules are 3.3V or even 1.8V.
both support 915MHz
But use different data transmission protocols, and are intended for completely different types of applications.
Adafruit has a good selection of Arduino compatible microprocessor boards with radios built in, and great "getting started" tutorials.
Study the documentation!!!!!! Doesn't work that way. You need to set up the internal program parameters using the "AT" commands, first, and then you can try transmitting.
These UART interfaced LoRa modules initially seem attractive apparently 'easy' interface and some need only two GPIOs pins.
However, the serial UART protocol used is normally unique to the individual manuafacturer and there are quite a few of these UART LoRa modules out there. You might well struggle to find working examples for projects.
If you want a LoRa module that will have heaps and heaps of published tutorials and programmed applications plus a good selection of Arduino libraries, stick to the SPI based LoRa modules such as those included on the Arduino boards mentioned.
If however you are specifically interested in using LoRaWAN, then this type of module can make setup quite a bit easier.
It helped me understand better then how I envisioned the entire LoRa communication.
I’ll have to decide to return purchased items and, as suggested, incorporate a microcontroller and a LoRa module.
Can you help me understand if @horace suggested devices that incorporate a microcontroller and a LoRa module are any of UART or SPI?
As you can see, I’m new to this and want to learn, but at the same time don't want to chase my own tail because info what is "better" way to start with LoRa is impossible to find online.
check the LoRa module - if it is SX127* or RFM95 etc it is SPI
of the modules I listed in post 7 only the The Things UNO is not SPI - it uses a Microchip RN2483 which uses serial UART protocol and has the LoRaWAN stack on board - the only time I used it was in the river project (see post 7) where LoRaWAN was a requirement - it can be used for LoRa peer-to-peer but not a easy as the SPI modules (see comments by @srnet on LoRa UART modules in post 8)
LoRa module, antenna socket, display, GPS and lithium battery so its easily portable and useful for range testing etc. You can even get 3D printed plastic cases for it.
Not a lot of use for a remote sensor though, deep sleep current is a tad to high.
