diff --git a/platformio.ini b/platformio.ini
index 2a15b2fe..d89be9b2 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -842,18 +842,20 @@ build_flags =  ${esp32_4MB_V4_max_base.build_flags}
   -D WLED_RELEASE_NAME=esp32S3_8MB_max 
   -D ARDUINO_USB_MODE=1 -D ARDUINO_USB_CDC_ON_BOOT=0 -D ARDUINO_USB_MSC_ON_BOOT=0 -D ARDUINO_USB_DFU_ON_BOOT=0
   -D WLED_WATCHDOG_TIMEOUT=0 
+  ; -D U8X8_HAVE_2ND_HW_I2C ;; experimental - tells U8g2 lib that a second HW I2C unit exists
   -D WLED_DISABLE_BLYNK ;; seems that BLYNK does not work on -S3
   -D WLED_DISABLE_LOXONE ; FLASH 1272 bytes
   -D WLED_DISABLE_ALEXA ;  RAM 116 bytes; FLASH 13524 bytes
   ; -D WLED_DISABLE_MQTT ;   RAM 216 bytes; FLASH 16496 bytes
   ; -D WLED_DISABLE_HUESYNC ;RAM 122 bytes; FLASH 6308 bytes
+  ; -D WLED_DISABLE_INFRARED ;RAM 136 bytes; FLASH 24492 bytes
   -D LEDPIN=4
   -D STATUSLED=39
   -D BTNPIN=48
   -D RLYPIN=21
   -D IRPIN=15
-  -D HW_PIN_SDA=42
-  -D HW_PIN_SCL=41
+  -D HW_PIN_SDA=42 ;; ESP32-S3 default: SDA = 8
+  -D HW_PIN_SCL=41 ;; ESP32-S3 default: SCL = 9
   -D AUDIOPIN=-1
   -D SR_DMTYPE=1
   -D I2S_SDPIN=16
@@ -865,11 +867,15 @@ build_flags =  ${esp32_4MB_V4_max_base.build_flags}
   ; -D WLED_DEBUG
   ; -D SR_DEBUG
   ; -D MIC_LOGGER
-lib_deps = ${esp32s3.lib_deps} ${common_mm.lib_deps_min} ${common_mm.lib_deps_max}
+lib_deps = ${esp32s3.lib_deps} ${common_mm.lib_deps_min}
+  paulstoffregen/OneWire@ ^2.3.7 ; used for USERMOD_DALLASTEMPERATURE -> need newer release with bugfixes for -S3; still requires TEMPERATURE_PIN < 46
+  olikraus/U8g2@ ^2.34.5 ; used for USERMOD_FOUR_LINE_DISPLAY -> need newer version with bugfixes for arduino-esp32 v2.0.4 (Wire inititialization) 
+  ElectronicCats/MPU6050 @ 0.6.0 ; used for USERMOD_MPU6050_IMU
+;lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compilation
 board_build.partitions = tools/WLED_ESP32_8MB.csv
 board_build.flash_mode = qio
-; RAM:   [==        ]  24.7% (used 80984 bytes from 327680 bytes)
-; Flash: [=======   ]  69.0% (used 1447873 bytes from 2097152 bytes)
+; RAM:   [==        ]  24.7% (used 80856 bytes from 327680 bytes)
+; Flash: [=======   ]  66.9% (used 1403489 bytes from 2097152 bytes)
 
 # ------------------------------------------------------------------------------
 # custom board configurations