diff --git a/src/abfall.cpp b/src/abfall.cpp
index ccfdb3f..0f133b9 100644
--- a/src/abfall.cpp
+++ b/src/abfall.cpp
@@ -9,8 +9,13 @@
 #include "hardware/pio.h"
 #include "hardware/rtc.h"
 #include "hardware/structs/scb.h"
+// #include "hardware/xosc.h"
+// #nclude "hardware/rosc.h"
+// #include "hardware/clocks.h"
+// #include "hardware/pll.h"
 
 #include "pico/cyw43_arch.h"
+#include "pico/sleep.h"
 #include "pico/stdlib.h"
 #include "pico/util/datetime.h"
 
@@ -33,8 +38,6 @@ int main() {
 #endif
     printf("Firmware version: %s\n", PROJECT_VERSION);
 
-    WS2812 led(WS2812_PIN);
-
     wifi_enable(); // Enable Wifi in order to set time and retrieve data
 
     NtpClient::setDateTime();
@@ -75,6 +78,10 @@ int main() {
     uint scb_orig = scb_hw->scr;
     uint clock0_orig = clocks_hw->sleep_en0;
     uint clock1_orig = clocks_hw->sleep_en1;
+    uart_default_tx_wait_blocking();
+    sleep_run_from_xosc();
+
+    WS2812 led(WS2812_PIN);
 
     while (true) {
         auto timestamp = time_us_64() + 60'000'000ull;
@@ -138,6 +145,7 @@ int main() {
             }
 
             led.blinkReady();
+            sleep_ms(800);
 
             datetime_t dtUntil = dt;
             add_one_hour(dtUntil); // next hour