diff --git a/.gitignore b/.gitignore
index 540f918..cc4236f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -59,3 +59,15 @@ bin/
 obj/
 
 *.code-workspace
+
+# Doxygen
+docs/html/
+
+# Temporary
+tmp/
+
+# Secrets
+.env*
+*.pem
+*.key
+*.cert
diff --git a/README.md b/README.md
index 73453bb..d20e779 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,12 @@
 
 ### SKU:U113
 
-RF433R is an RF wireless radio frequency receiver, using SYN531R radio frequency receiver, working frequency is 433.92MHz (using ASK modulation) commonly used by wireless controllers, built-in PCB antenna, stable receiving signal distance up to 10M, typical receiving sensitivity It is -109dBm. The exquisite and compact housing design can be embedded in a variety of radio frequency remote control applications. It is suitable for security alarm, wireless automatic meter reading, home and industrial automation, remote remote control, wireless data transmission and other system fields.
+RF433R is an RF wireless radio frequency receiver, using SYN531R radio frequency receiver, working frequency is 433.92MHz (using ASK modulation) commonly used by wireless controllers, built-in PCB antenna, stable receiving signal distance up to 10M, typical receiving sensitivity It is -109dBm. The exquisite and compact housing design can be embedded in a variety of radio frequency remote control applications. It is suitable for security alarm, wireless automatic meter reading, home and industrial automation, remote control, wireless data transmission and other system fields.
 
 
 ### SKU:U114
 
-RF433T is a radio frequency (RF) transmitter, using SYN115 radio frequency transmitter IC, working frequency is 433.92MHz (using ASK modulation) commonly used by wireless controllers, built-in PCB antenna, stable signal transmission distance up to 10M, The output power reaches 10dBm. The exquisite and compact housing design can be embedded in a variety of radio frequency remote control applications. It is suitable for security alarm, wireless automatic meter reading, home and industrial automation, remote remote control, wireless data transmission and other system fields.
+RF433T is a radio frequency (RF) transmitter, using SYN115 radio frequency transmitter IC, working frequency is 433.92MHz (using ASK modulation) commonly used by wireless controllers, built-in PCB antenna, stable signal transmission distance up to 10M, The output power reaches 10dBm. The exquisite and compact housing design can be embedded in a variety of radio frequency remote control applications. It is suitable for security alarm, wireless automatic meter reading, home and industrial automation, remote control, wireless data transmission and other system fields.
 
 
 ##  CAUTION
diff --git a/library.json b/library.json
index 87d5f46..577c965 100644
--- a/library.json
+++ b/library.json
@@ -1,10 +1,10 @@
 {
     "name": "M5Unit-RF433",
     "description": "Library for M5Stack UNIT RF433 using M5UnitUnified",
-    "keywords": "M5Stack, M5UnitUnified, RF433, SYN115, SYN531R, 433MHz, ASK, wireless",
+    "keywords": "m5stack, m5unitunified, rf433, syn115, syn531r, 433mhz, ask, wireless",
     "authors": {
         "name": "M5Stack",
-        "url": "http://www.m5stack.com"
+        "url": "https://www.m5stack.com"
     },
     "repository": {
         "type": "git",
diff --git a/platformio.ini b/platformio.ini
index 3e7e0a5..e119f45 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -154,18 +154,6 @@ lib_deps = ${env.lib_deps}
 platform = espressif32 @ 6.12.0
 framework = arduino
 
-[arduino_6_8_1]
-platform = espressif32 @ 6.8.1
-framework = arduino
-
-[arduino_6_6_0]
-platform = espressif32 @ 6.6.0
-framework = arduino
-
-[arduino_6_0_1]
-platform = espressif32 @ 6.0.1
-framework = arduino
-
 [nanoc6_latest]
 platform = espressif32 @ 6.12.0
 platform_packages =
@@ -617,12 +605,14 @@ build_src_filter = +<*> -<.git/> -<.svn/> +<../examples/UnitUnified/UnitRF433R/P
 extends=Core, option_release, arduino_latest
 build_src_filter = +<*> -<.git/> -<.svn/> +<../examples/UnitUnified/Transceiver>
 
+[env:Transceiver_Core2_Arduino_latest]
+extends=Core2, option_release, arduino_latest
+build_src_filter = +<*> -<.git/> -<.svn/> +<../examples/UnitUnified/Transceiver>
+
+
 ; [env:Transceiver_Tab5_Arduino_latest]
 ; extends=Tab5, option_release, pioarduino_latest
 ; build_src_filter = +<*> -<.git/> -<.svn/> +<../examples/UnitUnified/Transceiver>
 ; build_flags = ${Tab5.build_flags}
 ;   ${option_release.build_flags}
 
-; [env:Transceiver_NessoN1_Arduino_latest]
-; extends=NessoN1, option_release, pioarduino_latest
-; build_src_filter = +<*> -<.git/> -<.svn/> +<../examples/UnitUnified/Transceiver>