diff --git a/platformio.ini b/platformio.ini
index 6696f87..6471c7b 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -29,7 +29,6 @@ board_build.f_cpu = 240000000
 board_build.filesystem = littlefs
 lib_deps = 
 	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
-	bblanchon/ArduinoJson@^7.2.0
 	ESP Async WebServer
 build_flags = 
 	-DHELTEC_POWER_BUTTON
@@ -65,7 +64,6 @@ board_build.f_cpu = 240000000
 board_build.filesystem = littlefs
 lib_deps = 
 	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
-	bblanchon/ArduinoJson@^7.2.0
 	ESP Async WebServer
 build_flags = 
 	-DHELTEC_POWER_BUTTON
@@ -84,7 +82,6 @@ board_build.f_cpu = 240000000
 board_build.filesystem = littlefs
 lib_deps = 
 	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
-	bblanchon/ArduinoJson@^7.2.0
 	RadioLib
 	U8g2
 	XPowersLib
@@ -114,7 +111,6 @@ lib_deps =
 	RadioLib
 	U8g2
 	XPowersLib
-	bblanchon/ArduinoJson@^7.2.0
 	ESP Async WebServer
 build_flags = 
 	-DLILYGO
@@ -142,7 +138,6 @@ board_build.f_cpu = 240000000
 board_build.filesystem = littlefs
 lib_deps = 
 	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
-	bblanchon/ArduinoJson@^7.2.0
 	RadioLib
 	U8g2
 	XPowersLib
@@ -169,7 +164,6 @@ monitor_speed = 115200
 board_build.filesystem = littlefs
 lib_deps = 
 	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
-	bblanchon/ArduinoJson@^7.2.0
 	RadioLib
 	U8g2
 	XPowersLib
@@ -271,5 +265,63 @@ lib_deps =
 	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
 	adafruit/Adafruit ST7735 and ST7789 Library@^1.10.4
 
+[env:seek-on-mavic-sx1280]
+platform = espressif32
+board = t3_s3_v1_x
+framework = arduino
+upload_speed = 921600
+monitor_speed = 115200
+board_build.f_cpu = 240000000
+board_build.filesystem = littlefs
+lib_deps = 
+	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
+	RadioLib
+	U8g2
+	XPowersLib
+	ESP Async WebServer
+build_flags = 
+	-DLILYGO
+	-DT3_S3_V1_2_SX1280_PA
+	-DARDUINO_LILYGO_T3S3_SX1280_PA
+	-DESP32
+	-DUSING_SX1280PA
+    -DFREQ_BEGIN=2410
+	-DFREQ_END=2452
+	-DARDUINO_ARCH_ESP32
+	-DARDUINO_USB_CDC_ON_BOOT=1
+	-DARDUINO_LILYGO_T3_S3_V1_X
+	-DARDUINO_USB_MODE=1
+	-DLOG_DATA_JSON=1
+
+[env:seek-on-mavic-lr1121]
+platform = espressif32
+board = t3_s3_v1_x
+framework = arduino
+upload_speed = 921600
+monitor_speed = 115200
+board_build.f_cpu = 240000000
+board_build.filesystem = littlefs
+lib_deps = 
+	ropg/Heltec_ESP32_LoRa_v3@^0.9.1
+	RadioLib
+	U8g2
+	XPowersLib
+	ESP Async WebServer
+build_flags = 
+	-DLILYGO
+	-DT3_S3_V1_2_LR1121
+	-DT3_V1_3_SX1262
+	-DARDUINO_LILYGO_T3S3_LR1121
+	-DESP32
+    -DSAMPLES_RSSI=5
+	-DUSING_LR1121
+    -DFREQ_BEGIN=2410
+	-DFREQ_END=2452
+	-DARDUINO_ARCH_ESP32
+	-DARDUINO_USB_CDC_ON_BOOT=1
+	-DARDUINO_LILYGO_T3_S3_V1_X
+	-DARDUINO_USB_MODE=1
+	-DLOG_DATA_JSON=1
+
 [env:native]
 platform = native
diff --git a/src/main.cpp b/src/main.cpp
index 771d45d..39e80bf 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -25,9 +25,6 @@
 
 #include "FS.h"
 #include <Arduino.h>
-#ifdef LOG_DATA_JSON
-#include <ArduinoJson.h>
-#endif
 #include <AsyncTCP.h>
 #include <ESPAsyncWebServer.h>
 #include <File.h>
@@ -233,10 +230,13 @@ uint64_t scan_time = 0;
 uint64_t scan_start_time = 0;
 #endif
 
-// Define which UART port to use (0, 1, or 2)
+// log data via serial console, JSON format:
+// Optionally it can be enabled via this flag, although its recommended to use
+// platformio config flag -DLOG_DATA_JSON
+// #define LOG_DATA_JSON true
+
 #define SERIAL_PORT 1
 
-// Define which pins to use
 #define TX_PIN 12
 #define RX_PIN 16 // not used
 
@@ -778,8 +778,6 @@ void dumpToCommsTask(void *parameter)
 #ifdef LOG_DATA_JSON
 void logToSerialTask(void *parameter)
 {
-    JsonDocument doc;
-    char jsonOutput[200];
     uint64_t last_epoch = frequency_scan_result.last_epoch;
     frequency_scan_result.rssi = -999;
 
@@ -797,12 +795,11 @@ void logToSerialTask(void *parameter)
                 continue;
             }
 
-            doc["low_range_freq"] = frequency_scan_result.begin;
-            doc["high_range_freq"] = frequency_scan_result.end;
-            doc["value"] = String(highest_value_scanned);
-
-            serializeJson(doc, jsonOutput);
-            SerialPort.println(jsonOutput);
+            SerialPort.printf("{\"low_range_freq\": %" PRIu64
+                              ", \"high_range_freq\": %" PRIu64 ", "
+                              "\"value\": \"%" PRIi16 "\"}\n",
+                              frequency_scan_result.begin, frequency_scan_result.end,
+                              highest_value_scanned);
         }
     }
 }
@@ -980,10 +977,7 @@ void setup(void)
 #ifdef LILYGO
     setupBoards(); // true for disable U8g2 display library
     delay(500);
-    Serial.println("Setup LiLybeginSDCardGO board is done");
-#else
-    // Serial0.begin(115200); // Initialize UART0
-    // Serial0.println("Hello, Serial0 (UART0)!");
+    Serial.println("Setup LiLyGO board is done");
 #endif
 
     // LED brightness