diff --git a/oracle/main.c b/oracle/main.c
index 0152c44..cadc5e7 100644
--- a/oracle/main.c
+++ b/oracle/main.c
@@ -22,7 +22,7 @@ void res_get_handler(void* request, void* response, uint8_t* buffer, uint16_t pr
 void res_periodic_handler();
 
 /* declare resource and set handlers */
-PERIODIC_RESOURCE(myresource, "title=\"An observable resource\";rt=\"some descriptive text\";obs", res_get_handler, NULL, NULL, NULL, 10 * CLOCK_SECOND, res_periodic_handler);
+PERIODIC_RESOURCE(myresource, "title=\"An observable resource\";rt=\"some descriptive text\";obs", res_get_handler, NULL, NULL, NULL, 60 * CLOCK_SECOND, res_periodic_handler);
 
 void res_periodic_handler() {
     /* sample some sensor */
diff --git a/oracle/project-conf.h b/oracle/project-conf.h
index 4a0dbb2..e4a0f78 100644
--- a/oracle/project-conf.h
+++ b/oracle/project-conf.h
@@ -1,16 +1,35 @@
-/* reduce RAM consumption */
-
 #ifndef PROJECT_CONF_H_
 #define PROJECT_CONF_H_
-#undef REST_MAX_CHUNK_SIZE // Set the max response payload before fragmentation
+
+/* Set the max response payload before fragmentation */
+#undef REST_MAX_CHUNK_SIZE
 #define REST_MAX_CHUNK_SIZE 64
-#undef COAP_MAX_OPEN_TRANSACTIONS // Set the max number of concurrent transactions
-#define COAP_MAX_OPEN_TRANSACTIONS 4
-#undef NBR_TABLE_CONF_MAX_NEIGHBORS // Set the max number of entries in neighbors table
+
+/* Set the max number of concurrent transactions */
+#undef COAP_MAX_OPEN_TRANSACTIONS
+#define COAP_MAX_OPEN_TRANSACTIONS 2
+
+/* Set the max number of entries in neighbors table */
+#undef NBR_TABLE_CONF_MAX_NEIGHBORS
 #define NBR_TABLE_CONF_MAX_NEIGHBORS 10
-#undef UIP_CONF_MAX_ROUTES // Set the max number of routes handled by the node
-#define UIP_CONF_MAX_ROUTES 10
-#undef UIP_CONF_BUFFER_SIZE // Set the amount of memory reserved to the uIP packet buffer
-#define UIP_CONF_BUFFER_SIZE 280
+
+/*Set the max number of routes handled by the node */
+#undef UIP_CONF_MAX_ROUTES
+#define UIP_CONF_MAX_ROUTES 32
+
+/* Set the amount of memory reserved to the uIP packet buffer */
+#undef UIP_CONF_BUFFER_SIZE
+#define UIP_CONF_BUFFER_SIZE 192
+
+/* RPL specific tuning parameters */
+#undef RPL_CONF_DIO_REDUNDANCY
+#define RPL_CONF_DIO_REDUNDANCY 10
+
+#undef RPL_CONF_INTERVAL_MIN
+#define RPL_CONF_INTERVAL_MIN 3
+
+#undef RPL_CONF_DIO_INTERVAL_DOUBLINGS
+#define RPL_CONF_DIO_INTERVAL_DOUBLINGS 8
+
 #endif