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--- exploring_lora [2019/10/06 13:04] – [4.2. Coverage] samer
+++ exploring_lora [2019/10/10 11:03] – [4.2. [Classroom activity] Collisions and Packet Delivery Ratio] samer
@@ Line 73: / Line 73: @@
 ==== -. Modifying the Radio Parameters ====
-Download the {{ :sketch-1819.zip | basic sketches}} that implement a simple LoRa communication between two devices: a client and a server. 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 two devices: a client and a server. Open the sketches with Arduino IDE (it is preferable to run Arduino IDE as administrator). Make sure to choose the correct ''Board'' and ''Port'' in the ''Tools'' menu.
 Take a look at the source code in ''rf95_client.ino'' and ''rf95_server.ino''. Particularly, the following extract from the ''setup'' function configures the radio parameters of your LoRa devices:
@@ Line 160: / Line 160: @@
   * Only one server is required in the classroom. This server should compute the ratio of successfully delivered packets or PDR.
   * All groups are required to use the same frequency, spreading factor, and coding rate.
-  * The average packet arrival rate is equal for all clients. The delay between two packets is drawn uniformly in a predefined interval.
+  * The average packet arrival rate is equal for all clients.
 <WRAP center round help 100%>