diff --git a/app/lua/linit.c b/app/lua/linit.c
index 05d568409f..3547fe0fe8 100644
--- a/app/lua/linit.c
+++ b/app/lua/linit.c
@@ -59,22 +59,63 @@ extern LROT_TABLE(math);
   LROT_FUNCENTRY( debug, luaopen_debug )
 
 #if defined(LUA_CROSS_COMPILER)
-extern LROT_TABLE(base_func);
+
+#define LUAC_MODULE(map) \
+  LUALIB_API LROT_TABLE(map);
+
+#define LUAC_MODULE_INIT(map, initfunc) \
+  LUAC_MODULE(map);\
+  LUALIB_API int initfunc(lua_State *L);
+
+#ifndef __MINGW32__
+LUAC_MODULE(thislib) // module struct
+LUAC_MODULE(bit)
+LUAC_MODULE(color_utils)
+LUAC_MODULE_INIT(sjson, luaopen_sjson)
+LUAC_MODULE(pipe)
+#ifndef _MSC_VER 
+LUAC_MODULE_INIT(pixbuf, luaopen_pixbuf)
+#endif
+#endif
+
+LUAC_MODULE(base_func);
 LROT_BEGIN(rotables_meta, NULL, LROT_MASK_INDEX)
   LROT_TABENTRY( __index, base_func)
 LROT_END(rotables_meta, NULL, LROT_MASK_INDEX)
 
-extern LROT_TABLE(oslib);
-extern LROT_TABLE(iolib);
+LUAC_MODULE(oslib);
+LUAC_MODULE(iolib);
 LROT_BEGIN(rotables, LROT_TABLEREF(rotables_meta), 0)
   LROT_ROM_ENTRIES
   LROT_TABENTRY( os, oslib )
   LROT_TABENTRY( io, iolib )
+#ifndef __MINGW32__
+  // modules
+  LROT_TABENTRY( struct, thislib )
+  LROT_TABENTRY(bit, bit)
+  LROT_TABENTRY(color_utils, color_utils)
+  LROT_TABENTRY(sjson, sjson)
+  LROT_TABENTRY(pipe, pipe)
+#ifndef _MSC_VER 
+  LROT_TABENTRY(pixbuf, pixbuf)
+#endif
+#endif
 LROT_END(rotables, LROT_TABLEREF(rotables_meta), 0)
 
 LROT_BEGIN(lua_libs, NULL, 0)
   LROT_LIB_ENTRIES
   LROT_FUNCENTRY( io, luaopen_io )
+#ifndef __MINGW32__
+  // modules
+  LROT_FUNCENTRY(struct, NULL)
+  LROT_FUNCENTRY(bit, NULL)
+  LROT_FUNCENTRY(color_utils, NULL)
+  LROT_FUNCENTRY(sjson, luaopen_sjson)
+  LROT_FUNCENTRY(pipe, NULL)
+#ifndef _MSC_VER 
+  LROT_FUNCENTRY(pixbuf, luaopen_pixbuf)
+#endif
+#endif
 LROT_END(lua_libs, NULL, 0)
 
 #else
diff --git a/app/lua/luac_cross/Makefile b/app/lua/luac_cross/Makefile
index e617da739f..19021ac947 100644
--- a/app/lua/luac_cross/Makefile
+++ b/app/lua/luac_cross/Makefile
@@ -8,7 +8,7 @@
 
 summary ?= @true
 
-CCFLAGS:= -I. -I.. -I../../include -I../../uzlib
+CCFLAGS:= -I. -I.. -I../../include -I../../uzlib -I../..
 LDFLAGS:= -L$(SDK_DIR)/lib -L$(SDK_DIR)/ld -lm -ldl -Wl,-Map=mapfile
 
 CCFLAGS += -Wall
@@ -59,12 +59,15 @@ LUASRC  := lapi.c      lauxlib.c   lbaselib.c  lcode.c     ldblib.c    ldebug.c
            lstate.c    lstring.c   lstrlib.c   ltable.c    ltablib.c \
            ltm.c       lundump.c   lvm.c       lzio.c      lnodemcu.c
 UZSRC   := uzlib_deflate.c crc32.c
+SJSONSRC:= jsonsl.c
+MODSRC  := struct.c bit.c color_utils.c sjson.c pipe.c pixbuf.c
+#bloom.c crypto.c encoder.c (file.c)
 
 #
 # This relies on the files being unique on the vpath
 #
-SRC      := $(LUACSRC) $(LUASRC) $(UZSRC)
-vpath %.c .:..:../../libc:../../uzlib
+SRC      := $(LUACSRC) $(LUASRC) $(UZSRC) $(MODSRC) $(SJSONSRC)
+vpath %.c .:..:../../libc:../../uzlib:../../modules:../../sjson
 
 ODIR   := .output/$(TARGET)/$(FLAVOR)/obj
 
diff --git a/app/lua/luac_cross/luac.c b/app/lua/luac_cross/luac.c
index 45f302caeb..baaa8b2649 100644
--- a/app/lua/luac_cross/luac.c
+++ b/app/lua/luac_cross/luac.c
@@ -291,8 +291,7 @@ static int pmain(lua_State* L)
  {
   luaL_openlibs(L);
   if (luaL_loadfile(L,execute)!=0) fatal(lua_tostring(L,-1));
-  lua_pushstring(L, execute);
-  if (lua_pcall(L, 1, 1, 0)) fatal(lua_tostring(L,-1));
+  if (lua_pcall(L, 0, 1, 0)) fatal(lua_tostring(L,-1));
   if (!lua_isfunction(L, -1))
   {
    lua_pop(L,1);
diff --git a/app/lua53/host/Makefile b/app/lua53/host/Makefile
index b83ef275c3..5b3ffc0624 100644
--- a/app/lua53/host/Makefile
+++ b/app/lua53/host/Makefile
@@ -6,7 +6,7 @@
 #
 .NOTPARALLEL:
 
-CCFLAGS:= -I. -I.. -I../../include -I../../uzlib
+CCFLAGS:= -I. -I.. -I../../include -I../../uzlib -I../..
 LDFLAGS:= -L$(SDK_DIR)/lib -L$(SDK_DIR)/ld -lm -ldl -Wl,-Map=mapfile
 
 CCFLAGS += -Wall
@@ -55,6 +55,9 @@ LUASRC  := lapi.c      lauxlib.c   lbaselib.c  lcode.c     lcorolib.c  lctype.c
            ltable.c    ltablib.c   ltm.c       lundump.c   lutf8lib.c  lvm.c \
            lzio.c
 UZSRC   := uzlib_deflate.c crc32.c
+SJSONSRC:= jsonsl.c
+MODSRC  := struct.c bit.c color_utils.c sjson.c pipe.c pixbuf.c
+#bloom.c crypto.c encoder.c (file.c)
 
 TEST ?=
 ifeq ("$(TEST)","1")
@@ -65,8 +68,8 @@ endif  # $(TEST)==1
 #
 # This relies on the files being unique on the vpath
 #
-SRC      := $(LUACSRC) $(LUASRC) $(UZSRC)
-vpath %.c .:..:../../libc:../../uzlib
+SRC      := $(LUACSRC) $(LUASRC) $(UZSRC) $(MODSRC) $(SJSONSRC)
+vpath %.c .:..:../../libc:../../uzlib:../../modules:../../sjson
 
 ODIR   := .output/$(TARGET)/$(FLAVOR)/obj
 
diff --git a/app/lua53/linit.c b/app/lua53/linit.c
index 1538ce6ef2..2776df54a7 100644
--- a/app/lua53/linit.c
+++ b/app/lua53/linit.c
@@ -72,9 +72,22 @@ extern LROT_TABLE(utf8);
 #if defined(LUA_CROSS_COMPILER)
 
 /* _G __index -> rotables __index -> base_func */
-extern LROT_TABLE(rotables_meta);
-extern LROT_TABLE(base_func);
-
+#define LUAC_MODULE(map) \
+  LUALIB_API LROT_TABLE(map);
+
+#define LUAC_MODULE_INIT(map, initfunc) \
+  LUAC_MODULE(map);\
+  LUALIB_API int initfunc(lua_State *L);
+
+LUAC_MODULE(thislib) // module struct
+LUAC_MODULE(bit)
+LUAC_MODULE(color_utils)
+LUAC_MODULE_INIT(sjson, luaopen_sjson)
+LUAC_MODULE(pipe)
+LUAC_MODULE_INIT(pixbuf, luaopen_pixbuf)
+
+LUAC_MODULE(rotables_meta);
+LUAC_MODULE(base_func);
 LROT_BEGIN(rotables_meta, NULL, LROT_MASK_INDEX)
   LROT_TABENTRY( __index, base_func)
 LROT_END(rotables_meta, NULL, LROT_MASK_INDEX)
@@ -82,12 +95,26 @@ LROT_END(rotables_meta, NULL, LROT_MASK_INDEX)
 LROT_BEGIN(rotables, LROT_TABLEREF(rotables_meta), 0)
   LROT_TABENTRY( _G, base_func)
   LROT_ROM_ENTRIES
+  // modules
+  LROT_TABENTRY( struct, thislib )
+  LROT_TABENTRY(bit, bit)
+  LROT_TABENTRY(color_utils, color_utils)
+  LROT_TABENTRY(sjson, sjson)
+  LROT_TABENTRY(pipe, pipe)
+  LROT_TABENTRY(pixbuf, pixbuf)
 LROT_END(rotables, LROT_TABLEREF(rotables_meta), 0)
 
 LROT_BEGIN(lua_libs, NULL, 0)
   LROT_LIB_ENTRIES
   LROT_FUNCENTRY( io, luaopen_io )
   LROT_FUNCENTRY( os, luaopen_os )
+  // modules
+  LROT_FUNCENTRY(struct, NULL)
+  LROT_FUNCENTRY(bit, NULL)
+  LROT_FUNCENTRY(color_utils, NULL)
+  LROT_FUNCENTRY(sjson, luaopen_sjson)
+  LROT_FUNCENTRY(pipe, NULL)
+  LROT_FUNCENTRY(pixbuf, luaopen_pixbuf)
 LROT_END(lua_libs, NULL, 0)
 
 #else /* LUA_USE_ESP */
diff --git a/app/modules/color_utils.c b/app/modules/color_utils.c
index fd63da82ee..be405ef4d5 100644
--- a/app/modules/color_utils.c
+++ b/app/modules/color_utils.c
@@ -1,12 +1,9 @@
 #include "module.h"
 #include "lauxlib.h"
 #include "lmem.h"
-#include "platform.h"
 #include <stdlib.h>
 #include <math.h>
 #include <string.h>
-#include "user_interface.h"
-#include "osapi.h"
 
 #include "color_utils.h"
 
diff --git a/app/modules/color_utils.h b/app/modules/color_utils.h
index 42a911b1f8..2d81d36293 100644
--- a/app/modules/color_utils.h
+++ b/app/modules/color_utils.h
@@ -1,15 +1,7 @@
 #ifndef APP_MODULES_COLOR_UTILS_H_
 #define APP_MODULES_COLOR_UTILS_H_
 
-#include "module.h"
-#include "lauxlib.h"
-#include "lmem.h"
-#include "platform.h"
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-#include "user_interface.h"
-#include "osapi.h"
+#include "lnodemcu.h"
 
 /**
 * Convert hsv to grb
diff --git a/app/modules/pipe.c b/app/modules/pipe.c
index c46770af42..aebfd80b44 100644
--- a/app/modules/pipe.c
+++ b/app/modules/pipe.c
@@ -51,7 +51,6 @@
 #include "module.h"
 #include "lauxlib.h"
 #include <string.h>
-#include "platform.h"
 
 #define INVALID_LEN ((unsigned)-1)
 
@@ -226,11 +225,11 @@ int pipe_create(lua_State *L) {
   if (!lua_isnil(L, 1)) {
     luaL_checktype(L, 1, LUA_TFUNCTION);   /* non-nil arg1 must be a function */
     if (lua_isnil(L, 2)) {
-      prio = PLATFORM_TASK_PRIORITY_MEDIUM;
+      prio = LUA_TASK_MEDIUM;
     } else {
       prio = (int) lua_tointeger(L, 2);
-      luaL_argcheck(L, prio >= PLATFORM_TASK_PRIORITY_LOW &&
-                       prio <= PLATFORM_TASK_PRIORITY_HIGH, 2,
+      luaL_argcheck(L, prio >= LUA_TASK_LOW &&
+                       prio <= LUA_TASK_HIGH, 2,
                        "invalid priority");
     }
   }
diff --git a/lua_modules/liquidcrystal/lc-gpio4bit.lua b/lua_modules/liquidcrystal/lc-gpio4bit.lua
index 9870bfa0ab..4a682dbc62 100644
--- a/lua_modules/liquidcrystal/lc-gpio4bit.lua
+++ b/lua_modules/liquidcrystal/lc-gpio4bit.lua
@@ -1,4 +1,4 @@
-local gpio, bit = gpio, bit --luacheck: read globals gpio bit
+local gpio, bit = gpio, bit
 
 return function(bus_args)
    local rs = bus_args.rs or 0
diff --git a/lua_modules/liquidcrystal/lc-gpio8bit.lua b/lua_modules/liquidcrystal/lc-gpio8bit.lua
index cd38a7e050..43b7ffd37c 100644
--- a/lua_modules/liquidcrystal/lc-gpio8bit.lua
+++ b/lua_modules/liquidcrystal/lc-gpio8bit.lua
@@ -1,4 +1,4 @@
-local gpio, bit = gpio, bit --luacheck: read globals gpio bit
+local gpio, bit = gpio, bit
 
 return function(bus_args)
    local rs = bus_args.rs or 0
diff --git a/lua_modules/liquidcrystal/lc-i2c4bit.lua b/lua_modules/liquidcrystal/lc-i2c4bit.lua
index 0d286a02ae..5527c00c51 100644
--- a/lua_modules/liquidcrystal/lc-i2c4bit.lua
+++ b/lua_modules/liquidcrystal/lc-i2c4bit.lua
@@ -1,4 +1,4 @@
-local i2c, bit = i2c, bit --luacheck: read globals i2c bit
+local i2c, bit = i2c, bit
 
 return function(bus_args)
    local busid = bus_args.id or 0
diff --git a/lua_modules/liquidcrystal/liquidcrystal.lua b/lua_modules/liquidcrystal/liquidcrystal.lua
index ce13834b85..d711e57a28 100644
--- a/lua_modules/liquidcrystal/liquidcrystal.lua
+++ b/lua_modules/liquidcrystal/liquidcrystal.lua
@@ -1,4 +1,4 @@
-local bit = bit --luacheck: read globals bit
+local bit = bit
 -- metatable
 local LiquidCrystal = {}
 LiquidCrystal.__index = LiquidCrystal
diff --git a/msvc/luac-cross/luac-cross.vcxproj b/msvc/luac-cross/luac-cross.vcxproj
index 546a800ed2..1bad4dcc7f 100644
--- a/msvc/luac-cross/luac-cross.vcxproj
+++ b/msvc/luac-cross/luac-cross.vcxproj
@@ -104,7 +104,7 @@
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
-      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib;$(ProjectDir)\..\..\app</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -123,7 +123,7 @@
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
-      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib;$(ProjectDir)\..\..\app</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -144,7 +144,7 @@
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
-      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib;$(ProjectDir)\..\..\app</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -167,7 +167,7 @@
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
-      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ProjectDir)\..\..\app\lua;$(ProjectDir)\..\..\app\libc;$(ProjectDir)\..\..\app\include;$(ProjectDir)\..\..\app\uzlib;$(ProjectDir)\..\..\app</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -212,6 +212,12 @@
     <ClCompile Include="..\..\app\lua\lundump.c" />
     <ClCompile Include="..\..\app\lua\lvm.c" />
     <ClCompile Include="..\..\app\lua\lzio.c" />
+    <ClCompile Include="..\..\app\modules\bit.c" />
+    <ClCompile Include="..\..\app\modules\color_utils.c" />
+    <ClCompile Include="..\..\app\modules\sjson.c" />
+    <ClCompile Include="..\..\app\modules\pipe.c" />
+    <ClCompile Include="..\..\app\modules\struct.c" />
+    <ClCompile Include="..\..\app\sjson\jsonsl.c" />
     <ClCompile Include="..\..\app\uzlib\crc32.c" />
     <ClCompile Include="..\..\app\uzlib\uzlib_deflate.c" />
   </ItemGroup>
@@ -246,6 +252,9 @@
     <ClInclude Include="..\..\app\lua\lundump.h" />
     <ClInclude Include="..\..\app\lua\lvm.h" />
     <ClInclude Include="..\..\app\lua\lzio.h" />
+    <ClInclude Include="..\..\app\sjson\jsonsl.h" />
+    <ClInclude Include="..\..\app\sjson\json_config.h" />
+    <ClInclude Include="..\..\app\sjson\memcompat.h" />
     <ClInclude Include="..\..\app\uzlib\uzlib.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/msvc/luac-cross/luac-cross.vcxproj.filters b/msvc/luac-cross/luac-cross.vcxproj.filters
index 2b3aebb8e3..5cdef7c103 100644
--- a/msvc/luac-cross/luac-cross.vcxproj.filters
+++ b/msvc/luac-cross/luac-cross.vcxproj.filters
@@ -1,10 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <Filter Include="Source Files">
-      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
-      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
-    </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
       <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
@@ -28,6 +24,12 @@
     <Filter Include="app\include">
       <UniqueIdentifier>{439d70e8-0091-42d2-919f-7e710de3867c}</UniqueIdentifier>
     </Filter>
+    <Filter Include="app\modules">
+      <UniqueIdentifier>{3b52796e-cc0c-458d-bb40-d416bb18d49d}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="app\sjson">
+      <UniqueIdentifier>{fcd87750-9084-4308-bb91-bd4d44d29a90}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\app\uzlib\crc32.c">
@@ -132,6 +134,24 @@
     <ClCompile Include="..\..\app\lua\lzio.c">
       <Filter>app\lua</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\app\modules\struct.c">
+      <Filter>app\modules</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\app\modules\bit.c">
+      <Filter>app\modules</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\app\modules\color_utils.c">
+      <Filter>app\modules</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\app\modules\sjson.c">
+      <Filter>app\modules</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\app\modules\pipe.c">
+      <Filter>app\modules</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\app\sjson\jsonsl.c">
+      <Filter>app\sjson</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\app\lua\lnodemcu.c">
       <Filter>app\lua</Filter>
     </ClCompile>
@@ -230,5 +250,14 @@
     <ClInclude Include="..\..\app\include\user_modules.h">
       <Filter>app\include</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\app\sjson\json_config.h">
+      <Filter>app\sjson</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\app\sjson\jsonsl.h">
+      <Filter>app\sjson</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\app\sjson\memcompat.h">
+      <Filter>app\sjson</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>