Differences

This shows you the differences between two versions of the page.

--- exploring_lora [2018/09/29 11:43] – [3.1. Modifying the Radio Parameters] samer
+++ exploring_lora [2018/09/29 12:51] – [3.1. Modifying the Radio Parameters] samer
@@ Line 67: / Line 67: @@
 ==== -. Modifying the Radio Parameters ====
-Download the {{ :sketch-1819.zip | basic sketches}} that implement a simple LoRa communication between the two modules: a client module and a server module. Open the sketches with Arduino IDE. Make sure to choose the correct ''Board'' and ''Port'' in the ''Tools'' menu.
+Download the {{ :sketch-1819.zip | basic sketches}} that implement a simple LoRa communication between the two modules: a client module and a server module. Open the sketches with Arduino IDE. Make sure to choose the correct ''Board'' and ''Port'' in the ''Tools'' menu. In order to reduce collisions, configure the central frequency of your LoRa modules as below:
-Start by setting the central frequency of your LoRa modules according to the following table:
 ^  Group Number  ^   Frequency     ^
@@ Line 85: / Line 83: @@
 |       12       |      868.9      |
+Note that the radio parameters of your LoRa devices: Spreading Factor (SF), Bandwidth (Bw), and Coding Rate (CR) are configured in the ''setup'' function of the sketches. when needed, you can modify these configurations.
-The typical configuration for LoRa modules consists of 125 kHz sub-channels, a coding rate of 4/5, and a spreading factor equal to 7. You can also modify these radio parameters in the ''setup'' function.
 ==== -. Running Basic Sketches ====
-Download the {{ :sketch-1819.zip | basic sketches}} that implement a simple LoRa communication between the two modules. Open the sketches with Arduino IDE, compile and upload on the two arduino modules, respectively. On the serial interfaces, you should obtain similar results as in Fig. 2 and Fig. 3. The client sends periodically a short message and towards the server. The server outputs the RSSI (received power in dBm) for each received message.
+Now you can compile and upload the client and server sketches on the two arduino modules, respectively. On the serial interfaces, you should obtain similar results as in Fig. 2 and Fig. 3. The client sends periodically a short message towards the server. The server outputs the RSSI (received power in dBm) for each received message.
 [{{ :client-iotlab1.png?direct&600 ||Figure 2. Client serial monitor}}]