diff --git a/extra_script.py b/extra_script.py
index b185a93..ed62c64 100644
--- a/extra_script.py
+++ b/extra_script.py
@@ -10,7 +10,7 @@ from datetime import datetime
 import re
 import pprint
 from platformio.project.config import ProjectConfig
-from platformio.project.exception import InvalidProjectConfError
+
 
 Import("env")
 #print(env.Dump())
@@ -104,17 +104,7 @@ def writeFileIfChanged(fileName,data):
     return True    
 
 def mergeConfig(base,other):
-    try:
-        customconfig = env.GetProjectOption("custom_config")
-    except InvalidProjectConfError:
-        customconfig = None
     for bdir in other:
-        if customconfig and os.path.exists(os.path.join(bdir,customconfig)):
-            cname=os.path.join(bdir,customconfig)
-            print("merge custom config {}".format(cname))
-            with open(cname,'rb') as ah:
-                base += json.load(ah)
-            continue   
         cname=os.path.join(bdir,"config.json")
         if os.path.exists(cname):
             print("merge config %s"%cname)
@@ -284,9 +274,9 @@ class Grove:
     def _ss(self,z=False):
         if z:
             return self.name
-        return self.name if self.name != 'Z' else ''
+        return self.name if self.name is not 'Z' else ''
     def _suffix(self):
-        return '_'+self.name if self.name != 'Z' else ''
+        return '_'+self.name if self.name is not 'Z' else ''
     def replace(self,line):
         if line is None:
             return line
diff --git a/extra_script.py.new b/extra_script.py.new
new file mode 100644
index 0000000..b185a93
--- /dev/null
+++ b/extra_script.py.new
@@ -0,0 +1,528 @@
+print("running extra...")
+import gzip
+import shutil
+import os
+import sys
+import inspect
+import json
+import glob
+from datetime import datetime
+import re
+import pprint
+from platformio.project.config import ProjectConfig
+from platformio.project.exception import InvalidProjectConfError
+
+Import("env")
+#print(env.Dump())
+OWN_FILE="extra_script.py"
+GEN_DIR='lib/generated'
+CFG_FILE='web/config.json'
+XDR_FILE='web/xdrconfig.json'
+INDEXJS="index.js"
+INDEXCSS="index.css"
+CFG_INCLUDE='GwConfigDefinitions.h'
+CFG_INCLUDE_IMPL='GwConfigDefImpl.h'
+XDR_INCLUDE='GwXdrTypeMappings.h'
+TASK_INCLUDE='GwUserTasks.h'
+GROVE_CONFIG="GwM5GroveGen.h"
+GROVE_CONFIG_IN="lib/hardware/GwM5Grove.in"
+EMBEDDED_INCLUDE="GwEmbeddedFiles.h"
+
+def getEmbeddedFiles(env):
+    rt=[]
+    efiles=env.GetProjectOption("board_build.embed_files")
+    for f in efiles.split("\n"):
+        if f == '':
+            continue
+        rt.append(f)
+    return rt  
+
+def basePath():
+    #see: https://stackoverflow.com/questions/16771894/python-nameerror-global-name-file-is-not-defined
+    return os.path.dirname(inspect.getfile(lambda: None))
+
+def outPath():
+    return os.path.join(basePath(),GEN_DIR)
+def checkDir():
+    dn=outPath()
+    if not os.path.exists(dn):
+        os.makedirs(dn)
+    if not os.path.isdir(dn):
+        print("unable to create %s"%dn)
+        return False
+    return True    
+
+def isCurrent(infile,outfile):
+    if os.path.exists(outfile):
+        otime=os.path.getmtime(outfile)
+        itime=os.path.getmtime(infile)
+        if (otime >= itime):
+            own=os.path.join(basePath(),OWN_FILE)
+            if os.path.exists(own):
+                owntime=os.path.getmtime(own)
+                if owntime > otime:
+                    return False
+            print("%s is newer then %s, no need to recreate"%(outfile,infile))
+            return True
+    return False        
+def compressFile(inFile,outfile):
+    if isCurrent(inFile,outfile):
+        return
+    print("compressing %s"%inFile)
+    with open(inFile, 'rb') as f_in:
+        with gzip.open(outfile, 'wb') as f_out:
+            shutil.copyfileobj(f_in, f_out)
+
+def generateFile(infile,outfile,callback,inMode='rb',outMode='w'):
+    if isCurrent(infile,outfile):
+        return
+    print("creating %s"%outfile)
+    oh=None
+    with open(infile,inMode) as ch:
+        with open(outfile,outMode) as oh:
+            try:
+                callback(ch,oh,inFile=infile)
+                oh.close()
+            except Exception as e:
+                try:
+                    oh.close()
+                except:
+                    pass
+                os.unlink(outfile)
+                raise
+
+def writeFileIfChanged(fileName,data):
+    if os.path.exists(fileName):
+        with open(fileName,"r") as ih:
+            old=ih.read()
+            ih.close()
+            if old == data:
+                return False
+    print("#generating %s"%fileName)
+    with open(fileName,"w") as oh:
+        oh.write(data)
+    return True    
+
+def mergeConfig(base,other):
+    try:
+        customconfig = env.GetProjectOption("custom_config")
+    except InvalidProjectConfError:
+        customconfig = None
+    for bdir in other:
+        if customconfig and os.path.exists(os.path.join(bdir,customconfig)):
+            cname=os.path.join(bdir,customconfig)
+            print("merge custom config {}".format(cname))
+            with open(cname,'rb') as ah:
+                base += json.load(ah)
+            continue   
+        cname=os.path.join(bdir,"config.json")
+        if os.path.exists(cname):
+            print("merge config %s"%cname)
+            with open(cname,'rb') as ah:
+                merge=json.load(ah)
+                base=base+merge
+    return base
+
+def replaceTexts(data,replacements):
+    if replacements is None:
+        return data
+    if isinstance(data,str):
+        for k,v in replacements.items():
+            data=data.replace("$"+k,str(v))
+        return data
+    if isinstance(data,list):
+        rt=[]
+        for e in data:
+            rt.append(replaceTexts(e,replacements))
+        return rt
+    if isinstance(data,dict):   
+        rt={} 
+        for k,v in data.items():
+            rt[replaceTexts(k,replacements)]=replaceTexts(v,replacements)
+        return rt
+    return data
+def expandConfig(config):
+    rt=[]
+    for item in config:
+        type=item.get('type')
+        if type != 'array':
+            rt.append(item)
+            continue
+        replacements=item.get('replace')
+        children=item.get('children')
+        name=item.get('name')
+        if name is None:
+            name="#unknown#"
+        if not isinstance(replacements,list):
+            raise Exception("missing replacements at array %s"%name)
+        for replace in replacements:
+            if children is not None:
+                for c in children:
+                    rt.append(replaceTexts(c,replace))
+    return rt
+
+def generateMergedConfig(inFile,outFile,addDirs=[]):
+    if not os.path.exists(inFile):
+        raise Exception("unable to read cfg file %s"%inFile)
+    data=""
+    with open(inFile,'rb') as ch:    
+        config=json.load(ch)
+        config=mergeConfig(config,addDirs)
+        config=expandConfig(config)
+        data=json.dumps(config,indent=2)
+        writeFileIfChanged(outFile,data)
+
+def generateCfg(inFile,outFile,impl):
+    if not os.path.exists(inFile):
+        raise Exception("unable to read cfg file %s"%inFile)
+    data=""
+    with open(inFile,'rb') as ch:    
+        config=json.load(ch)     
+        data+="//generated from %s\n"%inFile
+        l=len(config)
+        idx=0
+        if not impl:
+            data+='#include "GwConfigItem.h"\n'
+            data+='class GwConfigDefinitions{\n'
+            data+='  public:\n'
+            data+='  int getNumConfig() const{return %d;}\n'%(l)
+            for item in config:
+                n=item.get('name')
+                if n is None:
+                    continue
+                if len(n) > 15:
+                    raise Exception("%s: config names must be max 15 caracters"%n)
+                data+='  static constexpr const char* %s="%s";\n'%(n,n)
+            data+="};\n"
+        else:
+            data+='void GwConfigHandler::populateConfigs(GwConfigInterface **config){\n'
+            for item in config:
+                name=item.get('name')
+                if name is None:
+                    continue
+                data+='  configs[%d]='%(idx)
+                idx+=1
+                secret="false";
+                if item.get('type') == 'password':
+                    secret="true"
+                data+="     new GwConfigInterface(%s,\"%s\",%s);\n"%(name,item.get('default'),secret)
+            data+='}\n'  
+    writeFileIfChanged(outFile,data)    
+                    
+def labelFilter(label):
+    return re.sub("[^a-zA-Z0-9]","",re.sub("\([0-9]*\)","",label))    
+def generateXdrMappings(fp,oh,inFile=''):
+    jdoc=json.load(fp)
+    oh.write("static GwXDRTypeMapping* typeMappings[]={\n")
+    first=True
+    for cat in jdoc:
+        item=jdoc[cat]
+        cid=item.get('id')
+        if cid is None:
+            continue
+        tc=item.get('type')
+        if tc is not None:
+            if first:
+                first=False
+            else:
+                oh.write(",\n")
+            oh.write("   new GwXDRTypeMapping(%d,0,%d) /*%s*/"%(cid,tc,cat))
+        fields=item.get('fields')
+        if fields is None:
+            continue
+        idx=0
+        for fe in fields:
+            if not isinstance(fe,dict):
+                continue
+            tc=fe.get('t')
+            id=fe.get('v')
+            if id is None:
+                id=idx
+            idx+=1
+            l=fe.get('l') or ''
+            if tc is None or id is None:
+                continue
+            if first:
+                first=False
+            else:
+                oh.write(",\n")
+            oh.write("   new GwXDRTypeMapping(%d,%d,%d) /*%s:%s*/"%(cid,id,tc,cat,l))
+    oh.write("\n")
+    oh.write("};\n")
+    for cat in jdoc:
+        item=jdoc[cat]
+        cid=item.get('id')
+        if cid is None:
+            continue
+        selectors=item.get('selector')
+        if selectors is not None:
+            for selector in selectors:
+                label=selector.get('l')
+                value=selector.get('v')
+                if label is not None and value is not None:
+                    label=labelFilter(label)
+                    define=("GWXDRSEL_%s_%s"%(cat,label)).upper()
+                    oh.write("    #define %s %s\n"%(define,value))
+        fields=item.get('fields')
+        if fields is not None:
+            idx=0
+            for field in fields:
+                v=field.get('v')
+                if v is None:
+                    v=idx
+                else:
+                    v=int(v)
+                label=field.get('l')
+                if v is not None and label is not None:
+                    define=("GWXDRFIELD_%s_%s"%(cat,labelFilter(label))).upper();
+                    oh.write("    #define %s %s\n"%(define,str(v)))
+                idx+=1
+
+class Grove:
+    def __init__(self,name) -> None:
+        self.name=name
+    def _ss(self,z=False):
+        if z:
+            return self.name
+        return self.name if self.name != 'Z' else ''
+    def _suffix(self):
+        return '_'+self.name if self.name != 'Z' else ''
+    def replace(self,line):
+        if line is None:
+            return line
+        return line.replace('$G$',self._ss()).replace('$Z$',self._ss(True)).replace('$GS$',self._suffix())
+def generateGroveDefs(inh,outh,inFile=''):
+    GROVES=[Grove('Z'),Grove('A'),Grove('B'),Grove('C')]
+    definition=[]
+    started=False
+    def writeConfig():
+        for grove in GROVES:        
+            for cl in definition:
+                outh.write(grove.replace(cl))
+
+    for line in inh:
+        if re.match(" *#GROVE",line):
+            started=True
+            if len(definition) > 0:
+                writeConfig()
+            definition=[]
+            continue
+        if started:
+            definition.append(line)
+    if len(definition) > 0:
+        writeConfig()
+
+
+
+userTaskDirs=[]
+
+def getUserTaskDirs():
+    rt=[]
+    taskdirs=glob.glob(os.path.join( basePath(),'lib','*task*'))
+    for task in taskdirs:
+        rt.append(task)
+    return rt
+
+def checkAndAdd(file,names,ilist):
+    if not file.endswith('.h'):
+        return
+    match=False
+    for cmp in names:
+        #print("##check %s<->%s"%(f.lower(),cmp))
+        if file.lower() == cmp:
+            match=True
+    if not match:
+        return
+    ilist.append(file) 
+def genereateUserTasks(outfile):
+    includes=[]
+    for task in userTaskDirs:
+        #print("##taskdir=%s"%task)
+        base=os.path.basename(task)
+        includeNames=[base.lower()+".h",'gw'+base.lower()+'.h']
+        for f in os.listdir(task):
+            checkAndAdd(f,includeNames,includes)
+    includeData=""
+    for i in includes:
+        print("#task include %s"%i)
+        includeData+="#include <%s>\n"%i
+    writeFileIfChanged(outfile,includeData)            
+
+def generateEmbedded(elist,outFile):
+    content=""
+    for entry in elist:
+        content+="EMBED_GZ_FILE(\"%s\",%s,\"%s\");\n"%entry
+    writeFileIfChanged(outFile,content)    
+
+def getContentType(fn):
+    if (fn.endswith('.gz')):
+        fn=fn[0:-3]
+    if (fn.endswith('html')):
+        return "text/html"
+    if (fn.endswith('json')):
+        return "application/json"
+    if (fn.endswith('js')):
+        return "text/javascript"
+    if (fn.endswith('css')):    
+        return "text/css"
+    return "application/octet-stream"
+
+
+def getLibs():
+    base=os.path.join(basePath(),"lib")
+    rt=[]
+    for sd in os.listdir(base):
+        if sd == '..':
+            continue
+        if sd == '.':
+            continue
+        fn=os.path.join(base,sd)
+        if os.path.isdir(fn):
+            rt.append(sd)
+    EXTRAS=['generated']
+    for e in EXTRAS:
+        if not e in rt:
+            rt.append(e)
+    return rt
+
+
+
+def joinFiles(target,pattern,dirlist):
+    flist=[]
+    for dir in dirlist:
+            fn=os.path.join(dir,pattern)
+            if os.path.exists(fn):
+                flist.append(fn)
+    current=False
+    if os.path.exists(target):
+        current=True
+        for f in flist:
+            if not isCurrent(f,target):
+                current=False
+                break
+    if current:
+        print("%s is up to date"%target)
+        return
+    print("creating %s"%target)
+    with gzip.open(target,"wb") as oh:
+        for fn in flist:
+            print("adding %s to %s"%(fn,target))
+            with open(fn,"rb") as rh:
+                shutil.copyfileobj(rh,oh)
+    
+
+OWNLIBS=getLibs()+["FS","WiFi"]
+GLOBAL_INCLUDES=[]
+
+def handleDeps(env):
+    #overwrite the GetProjectConfig
+    #to inject all our libs
+    oldGetProjectConfig=env.GetProjectConfig    
+    def GetProjectConfigX(env):        
+        rt=oldGetProjectConfig()
+        cenv="env:"+env['PIOENV']
+        libs=[]
+        for section,options in rt.as_tuple():
+            if section == cenv:
+                for key,values in options:
+                    if key == 'lib_deps':
+                        libs=values
+    
+        mustUpdate=False
+        for lib in OWNLIBS:
+            if not lib in libs:
+                libs.append(lib)
+                mustUpdate=True
+        if mustUpdate:
+            update=[(cenv,[('lib_deps',libs)])]
+            rt.update(update)
+        return rt
+    env.AddMethod(GetProjectConfigX,"GetProjectConfig")
+    #store the list of all includes after we resolved
+    #the dependencies for our main project
+    #we will use them for all compilations afterwards
+    oldLibBuilder=env.ConfigureProjectLibBuilder
+    def ConfigureProjectLibBuilderX(env):
+        global GLOBAL_INCLUDES
+        project=oldLibBuilder()
+        #print("##ConfigureProjectLibBuilderX")
+        #pprint.pprint(project)
+        if project.depbuilders:
+            #print("##depbuilders %s"%",".join(map(lambda x: x.path,project.depbuilders)))
+            for db in project.depbuilders:
+                idirs=db.get_include_dirs()
+                for id in idirs:
+                    if not id in GLOBAL_INCLUDES:
+                        GLOBAL_INCLUDES.append(id)
+        return project
+    env.AddMethod(ConfigureProjectLibBuilderX,"ConfigureProjectLibBuilder")
+    def injectIncludes(env,node):
+        return env.Object(
+            node,
+            CPPPATH=env["CPPPATH"]+GLOBAL_INCLUDES
+        )
+    env.AddBuildMiddleware(injectIncludes)
+
+
+def prebuild(env):
+    global userTaskDirs
+    print("#prebuild running")
+    if not checkDir():
+        sys.exit(1)
+    ldf_mode=env.GetProjectOption("lib_ldf_mode")
+    if ldf_mode == 'off':
+        print("##ldf off - own dependency handling")
+        handleDeps(env)
+    userTaskDirs=getUserTaskDirs()
+    mergedConfig=os.path.join(outPath(),os.path.basename(CFG_FILE))
+    generateMergedConfig(os.path.join(basePath(),CFG_FILE),mergedConfig,userTaskDirs)
+    compressFile(mergedConfig,mergedConfig+".gz")
+    generateCfg(mergedConfig,os.path.join(outPath(),CFG_INCLUDE),False)
+    generateCfg(mergedConfig,os.path.join(outPath(),CFG_INCLUDE_IMPL),True)
+    joinFiles(os.path.join(outPath(),INDEXJS+".gz"),INDEXJS,["web"]+userTaskDirs)
+    joinFiles(os.path.join(outPath(),INDEXCSS+".gz"),INDEXCSS,["web"]+userTaskDirs)
+    embedded=getEmbeddedFiles(env)
+    filedefs=[]
+    for ef in embedded:
+        print("#checking embedded file %s"%ef)
+        (dn,fn)=os.path.split(ef)
+        pureName=fn
+        if pureName.endswith('.gz'):
+            pureName=pureName[0:-3]
+        ct=getContentType(pureName)
+        usname=ef.replace('/','_').replace('.','_')
+        filedefs.append((pureName,usname,ct))
+        inFile=os.path.join(basePath(),"web",pureName)
+        if os.path.exists(inFile):
+            compressFile(inFile,ef)
+        else:
+            print("#WARNING: infile %s for %s not found"%(inFile,ef))
+    generateEmbedded(filedefs,os.path.join(outPath(),EMBEDDED_INCLUDE))
+    genereateUserTasks(os.path.join(outPath(), TASK_INCLUDE))
+    generateFile(os.path.join(basePath(),XDR_FILE),os.path.join(outPath(),XDR_INCLUDE),generateXdrMappings)
+    generateFile(os.path.join(basePath(),GROVE_CONFIG_IN),os.path.join(outPath(),GROVE_CONFIG),generateGroveDefs,inMode='r')
+    version="dev"+datetime.now().strftime("%Y%m%d")
+    env.Append(CPPDEFINES=[('GWDEVVERSION',version)])
+
+def cleangenerated(source, target, env):
+    od=outPath()
+    if os.path.isdir(od):
+        print("#cleaning up %s"%od)
+        for f in os.listdir(od):
+            if f == "." or f == "..":
+                continue
+            fn=os.path.join(od,f)
+            os.unlink(f)
+
+
+print("#prescript...")
+prebuild(env)
+board="PLATFORM_BOARD_%s"%env["BOARD"].replace("-","_").upper()
+print("Board=#%s#"%board)
+print("BuildFlags=%s"%(" ".join(env["BUILD_FLAGS"])))
+env.Append(
+    LINKFLAGS=[ "-u", "custom_app_desc" ],
+    CPPDEFINES=[(board,"1")]
+)
+#script does not run on clean yet - maybe in the future
+env.AddPostAction("clean",cleangenerated)
diff --git a/lib/obp60task/run_obp40_s3 b/lib/obp60task/run_obp40_s3
index f3b9f65..6623c20 100644
--- a/lib/obp60task/run_obp40_s3
+++ b/lib/obp60task/run_obp40_s3
@@ -7,4 +7,4 @@
 
 # Compile the firmware
 echo "Compiling Firmware"
-platformio run -e obp60_s3
\ No newline at end of file
+platformio run -e obp40_s3
\ No newline at end of file