diff --git a/CmakeLists.txt b/CmakeLists.txt
index 78bf9c8..d522ed3 100644
--- a/CmakeLists.txt
+++ b/CmakeLists.txt
@@ -33,7 +33,7 @@ pico_set_program_version(node1 "0.1")
 pico_set_program_name(node1 "node_one")
 
 # pull in common dependencies
-target_link_libraries(node1 pico_stdlib hardware_i2c pico_cyw43_arch_lwip_threadsafe_background)
+target_link_libraries(node1 pico_stdlib hardware_i2c  pico_cyw43_arch_lwip_poll)
 
 target_include_directories(node1 PRIVATE
     ${CMAKE_CURRENT_LIST_DIR}
diff --git a/node1.c b/node1.c
index 2d794f9..5b1f0f7 100644
--- a/node1.c
+++ b/node1.c
@@ -135,22 +135,23 @@ static bool cb_30(__unused struct repeating_timer *t) {
     // current_pms5003_reading = pms5003_finish_reading(&pms_config);
   // }
 
-  // readings_index++;
+  readings_index++;
   if (wifi_connected) {
       char msg[256];
       snprintf(msg, sizeof(msg),
-               "M001,%.2f,%.2f%.2f\n",
+               "M001,%.2f,%.2f,%2f\n",
                current_bem280_reading.temperature,
                current_bem280_reading.pressure,
                current_bem280_reading.humidity);
       printf("Sending data to backend server...\n");
-      bool success = tcp_client_send_message(&tcp_config, msg);
-      if (success) {
-          printf("✓ Data sent successfully\n");
-          comms_led_blink();
-      } else {
-          printf("✗ Failed to send data\n");
-      }
+      printf("MSG: %s", msg);
+      // bool success = tcp_client_send_message(&tcp_config, msg);
+      // if (success) {
+      //     printf("✓ Data sent successfully\n");
+      //     comms_led_blink();
+      // } else {
+      //     printf("✗ Failed to send data\n");
+      // }
   } else {
       printf("WiFi not connected, skipping send\n");
   }
@@ -170,14 +171,14 @@ int main() {
   printf("Initializing WiFi...\n");
   if (!wifi_init()) {
       printf("WiFi initialization failed!\n");
-      // Continue anyway for sensor readings
+      panic("WiFi initialization failed!");
   } else {
       wifi_connected = true;
-
       // Initialize TCP client
       if (!tcp_client_init(&tcp_config, BACKEND_SERVER_IP,
                           BACKEND_SERVER_PORT, 10000)) {
           printf("TCP client initialization failed\n");
+          panic("TCP client initialization failed!");
           wifi_connected = false;
       } else {
           printf("TCP client ready: %s:%d\n", BACKEND_SERVER_IP, BACKEND_SERVER_PORT);
@@ -195,8 +196,10 @@ int main() {
   struct repeating_timer timer_24h;
   add_repeating_timer_ms(86400000, cb_24h, NULL, &timer_24h);
   while (true) {
+    cyw43_arch_poll();
+    cyw43_arch_wait_for_work_until(make_timeout_time_ms(1000));
     comms_led_update();
-    tight_loop_contents();
     watchdog_update();
+    tight_loop_contents();
   }
 }