diff --git a/wled00/data/settings_leds.htm b/wled00/data/settings_leds.htm
index 3e34dd07..c5eac450 100644
--- a/wled00/data/settings_leds.htm
+++ b/wled00/data/settings_leds.htm
@@ -350,8 +350,8 @@ ${i+1}:
     }
     function addBtn(i,p,t) {
       var c = gId("btns").innerHTML;
-      var bt = "BT" + i;
-      var be = "BE" + i;
+      var bt = "BT" + String.fromCharCode((i<10?48:55)+i);
+      var be = "BE" + String.fromCharCode((i<10?48:55)+i);
       c += `Button ${i} GPIO: <input type="number" min="-1" max="40" name="${bt}" onchange="UI()" class="xs" value="${p}">`;
       c += `&nbsp;<select name="${be}">`
       c += `<option value="0" ${t==0?"selected":""}>Disabled</option>`;
diff --git a/wled00/html_settings.h b/wled00/html_settings.h
index 474b08c3..7d73f256 100644
--- a/wled00/html_settings.h
+++ b/wled00/html_settings.h
@@ -77,7 +77,7 @@ onclick="B()">Back</button><button type="submit">Save & Connect</button></form>
 // Autogenerated from wled00/data/settings_leds.htm, do not edit!!
 const char PAGE_settings_leds[] PROGMEM = R"=====(<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta 
 name="viewport" content="width=500"><title>LED Settings</title><script>
-var timeout,d=document,laprev=55,maxB=1,maxM=4e3,maxPB=4096,maxL=1333,maxLbquot=0,customStarts=!1,startsDirty=[];function H(){window.open("https://kno.wled.ge/features/settings/#led-settings")}function B(){window.open("/settings","_self")}function gId(e){return d.getElementById(e)}function off(e){d.getElementsByName(e)[0].value=-1}function showToast(e,n=!1){var t=gId("toast");t.innerHTML=e,t.className=n?"error":"show",clearTimeout(timeout),t.style.animation="none",timeout=setTimeout((function(){t.className=t.className.replace("show","")}),2900)}function bLimits(e,n,t,a){maxB=e,maxM=t,maxPB=n,maxL=a}function pinsOK(){var e=d.getElementsByTagName("input");for(i=0;i<e.length;i++){var n=e[i].name.substring(0,2);if("L0"==n||"L1"==n||"L2"==n||"L3"==n){var t=e[i].name.substring(2);if(parseInt(d.getElementsByName("LT"+t)[0].value,10)>=80)continue}if(("L0"==n||"L1"==n||"L2"==n||"L3"==n||"L4"==n||"RL"==n||"BT"==n||"IR"==n)&&""!=e[i].value&&"-1"!=e[i].value){if(d.um_p&&d.um_p.some(n=>n==parseInt(e[i].value,10)))return alert(`Sorry, pins ${JSON.stringify(d.um_p)} can't be used.`),e[i].value="",e[i].focus(),!1;if(e[i].value>5&&e[i].value<12)return alert("Sorry, pins 6-11 can not be used."),e[i].value="",e[i].focus(),!1;if("IR"!=n&&"BT"!=n&&e[i].value>33)return alert("Sorry, pins >33 are input only."),e[i].value="",e[i].focus(),!1;for(j=i+1;j<e.length;j++){var a=e[j].name.substring(0,2);if("L0"==a||"L1"==a||"L2"==a||"L3"==a||"L4"==a||"RL"==a||"BT"==a||"IR"==a){if("L"===a.substring(0,1)){var s=e[j].name.substring(2);if(parseInt(d.getElementsByName("LT"+s)[0].value,10)>=80)continue}if(""!=e[j].value&&e[i].value==e[j].value)return alert(`Pin conflict between ${e[i].name}/${e[j].name}!`),e[j].value="",e[j].focus(),!1}}}}return!0}function trySubmit(e){if(d.Sf.data.value="",e.preventDefault(),!pinsOK())return e.stopPropagation(),!1;if(bquot>100){var n="Too many LEDs for me to handle!";maxM<1e4&&(n+="\n\rConsider using an ESP32."),alert(n)}d.Sf.checkValidity()&&d.Sf.submit()}function S(){GetV(),checkSi(),setABL()}function enABL(){var e=gId("able").checked;d.Sf.LA.value=e?laprev:0,gId("abl").style.display=e?"inline":"none",gId("psu2").style.display=e?"inline":"none",d.Sf.LA.value>0&&setABL()}function enLA(){var e=d.Sf.LAsel.value;d.Sf.LA.value=e,gId("LAdis").style.display=50==e?"inline":"none",UI()}function setABL(){switch(gId("able").checked=!0,d.Sf.LAsel.value=50,parseInt(d.Sf.LA.value)){case 0:gId("able").checked=!1,enABL();break;case 30:d.Sf.LAsel.value=30;break;case 35:d.Sf.LAsel.value=35;break;case 55:d.Sf.LAsel.value=55;break;case 255:d.Sf.LAsel.value=255;break;default:gId("LAdis").style.display="inline"}gId("m1").innerHTML=maxM,d.getElementsByName("Sf")[0].addEventListener("submit",trySubmit),UI()}function getMem(e,n,t){return e<32?maxM<1e4&&3==t?e>29?20*n:15*n:maxM>=1e4?e>29?8*n:6*n:e>29?4*n:3*n:e>31&&e<48?5:44==e||45==e?4*n:3*n}function UI(e=!1){var n=!1,t=0;gId("ampwarning").style.display=d.Sf.MA.value>7200?"inline":"none",255==d.Sf.LA.value?laprev=12:d.Sf.LA.value>0&&(laprev=d.Sf.LA.value);var a=d.getElementsByTagName("select");for(i=0;i<a.length;i++)if("LT"==a[i].name.substring(0,2)){var s=a[i].name.substring(2),l=parseInt(a[i].value,10);gId("p0d"+s).innerHTML=l>=80&&l<96?"IP address:":l>49?"Data GPIO:":l>41?"GPIOs:":"GPIO:",gId("p1d"+s).innerHTML=l>49&&l<64?"Clk GPIO:":"";var o=d.getElementsByName("L1"+s)[0];for(t+=getMem(l,d.getElementsByName("LC"+s)[0].value,d.getElementsByName("L0"+s)[0].value),f=1;f<5;f++){(o=d.getElementsByName("L"+f+s)[0])&&(l>=80&&l<96&&f<4||l>49&&1==f||l>41&&l<50&&f+40<l?(o.style.display="inline",o.required=!0):(o.style.display="none",o.required=!1,o.value=""))}e&&(gId("rf"+s).checked=gId("rf"+s).checked||31==l,l>31&&l<48&&(d.getElementsByName("LC"+s)[0].value=1)),gId("rf"+s).onclick=31==l?function(){return!1}:function(){},n|=30==l||31==l||l>40&&l<46&&43!=l,gId("co"+s).style.display=l>=80&&l<96||41==l||42==l?"none":"inline",gId("dig"+s+"c").style.display=l>40&&l<48?"none":"inline",gId("dig"+s+"r").style.display=l>=80&&l<96?"none":"inline",gId("dig"+s+"s").style.display=l>=80&&l<96||l>40&&l<48?"none":"inline",gId("dig"+s+"f").style.display=l>=16&&l<32||l>=50&&l<64?"inline":"none",gId("dig"+s+"a").style.display=n?"inline":"none",gId("rev"+s).innerHTML=l>40&&l<48?"Inverted output":"Reversed (rotated 180°)",gId("psd"+s).innerHTML=l>40&&l<48?"Index:":"Start:"}var r=d.querySelectorAll(".wc"),u=r.length;for(i=0;i<u;i++)r[i].style.display=n?"inline":"none";var p=d.getElementsByTagName("input"),m=0,v=0,c=0;for(i=0;i<p.length;i++){var g=p[i].name.substring(0,2);s=p[i].name.substring(2);if("LC"!=g){if("L0"==g||"L1"==g)d.getElementsByName("LC"+s)[0].max=maxPB;if("L0"==g||"L1"==g||"L2"==g||"L3"==g){if((l=parseInt(d.getElementsByName("LT"+s)[0].value))>=80){p[i].max=255,p[i].min=0,p[i].style.color="#fff";continue}p[i].max=33,p[i].min=-1}if(("L0"==g||"L1"==g||"L2"==g||"L3"==g||"L4"==g||"RL"==g||"BT"==g||"IR"==g)&&""!=p[i].value&&"-1"!=p[i].value){var f=[];if(d.um_p&&Array.isArray(d.um_p))for(k=0;k<d.um_p.length;k++)f.push(d.um_p[k]);for(j=0;j<p.length;j++)if(i!=j){var y=p[j].name.substring(0,2);if("L0"==y||"L1"==y||"L2"==y||"L3"==y||"L4"==y||"RL"==y||"BT"==y||"IR"==y){if("L"===y.substring(0,1)){var L=p[j].name.substring(2);if(parseInt(d.getElementsByName("LT"+L)[0].value,10)>=80)continue}""!=p[j].value&&"-1"!=p[j].value&&f.push(parseInt(p[j].value,10))}}f.some(e=>e==parseInt(p[i].value,10))?p[i].style.color="red":p[i].style.color=parseInt(p[i].value,10)>33?"orange":"#fff"}}else{var I=parseInt(p[i].value,10);customStarts&&startsDirty[s]||(gId("ls"+s).value=m),gId("ls"+s).disabled=!customStarts,I&&((a=parseInt(gId("ls"+s).value))+I>m&&(m=a+I),I>c&&(c=I),(l=parseInt(d.getElementsByName("LT"+s)[0].value))<80&&(v+=I))}}gId("lc").textContent=m,gId("pc").textContent=m==v?"":"("+v+" physical)",gId("m0").innerHTML=t,bquot=t/maxM*100,gId("dbar").style.background=`linear-gradient(90deg, ${bquot>60?bquot>90?"red":"orange":"#ccc"} 0 ${bquot}%%, #444 ${bquot}%% 100%%)`,gId("ledwarning").style.display=c>Math.min(maxPB,800)||bquot>80?"inline":"none",gId("ledwarning").style.color=c>Math.max(maxPB,800)||bquot>100?"red":"orange",gId("wreason").innerHTML=bquot>80?"80% of max. LED memory"+(bquot>100?` (<b>ERROR: Using over ${maxM}B!</b>)`:""):"800 LEDs per output";var h=Math.ceil((100+v*laprev)/500)/2;h=h>5?Math.ceil(h):h;a="";var b=30==d.Sf.LAsel.value,B=255==d.Sf.LAsel.value;h<1.02&&!b&&!B?a="ESP 5V pin with 1A USB supply":(a+=b?"12V ":B?"WS2815 12V ":"5V ",a+=h,a+="A supply connected to LEDs");var S=Math.ceil((100+v*laprev)/1500)/2,E="(for most effects, ~";E+=S=S>5?Math.ceil(S):S,E+="A is enough)<br>",gId("psu").innerHTML=a,gId("psu2").innerHTML=B?"":E,gId("json").style.display=8==d.Sf.IT.value?"":"none"}function lastEnd(e){if(e<1)return 0;v=parseInt(d.getElementsByName("LS"+(e-1))[0].value)+parseInt(d.getElementsByName("LC"+(e-1))[0].value);var n=parseInt(d.getElementsByName("LT"+(e-1))[0].value);return n>31&&n<48&&(v=1),isNaN(v)?0:v}function addLEDs(e,n=!0){var t=d.getElementsByClassName("iST"),a=t.length;if(!(1==e&&a>=maxB||-1==e&&0==a)){var i=gId("mLC");if(1==e){var s=`<div class="iST">\n<hr style="width:260px">\n${a+1}:\n<select name="LT${a}" onchange="UI(true)">\n<option value="22" selected>WS281x</option>\n<option value="30">SK6812 RGBW</option>\n<option value="31">TM1814</option>\n<option value="24">400kHz</option>\n<option value="50">WS2801</option>\n<option value="51">APA102</option>\n<option value="52">LPD8806</option>\n<option value="53">P9813</option>\n<option value="41">PWM White</option>\n<option value="42">PWM WWCW</option>\n<option value="43">PWM RGB</option>\n<option value="44">PWM RGBW</option>\n<option value="45">PWM RGBWC</option>\n<option value="80">DDP RGB (network)</option>\n\x3c!--option value="81">E1.31 RGB (network)</option--\x3e\n\x3c!--option value="82">ArtNet RGB (network)</option--\x3e\n</select>&nbsp;\n<div id="co${a}" style="display:inline">Color Order:\n<select name="CO${a}">\n<option value="0">GRB</option>\n<option value="1">RGB</option>\n<option value="2">BRG</option>\n<option value="3">RBG</option>\n<option value="4">BGR</option>\n<option value="5">GBR</option>\n</select></div>\n<br>\n<span id="psd${a}">Start:</span> <input type="number" name="LS${a}" id="ls${a}" class="l starts" min="0" max="8191" value="${lastEnd(a)}" oninput="startsDirty[${a}]=true;UI();" required />&nbsp;\n<div id="dig${a}c" style="display:inline">Length: <input type="number" name="LC${a}" class="l" min="1" max="${maxPB}" value="1" required oninput="UI()" /></div>\n<br>\n<span id="p0d${a}">GPIO:</span> <input type="number" name="L0${a}" min="0" max="33" required class="s" onchange="UI()"/>\n<span id="p1d${a}"></span><input type="number" name="L1${a}" min="0" max="33" class="s" onchange="UI()"/>\n<span id="p2d${a}"></span><input type="number" name="L2${a}" min="0" max="33" class="s" onchange="UI()"/>\n<span id="p3d${a}"></span><input type="number" name="L3${a}" min="0" max="33" class="s" onchange="UI()"/>\n<span id="p4d${a}"></span><input type="number" name="L4${a}" min="0" max="33" class="s" onchange="UI()"/>\n<div id="dig${a}r" style="display:inline"><br><span id="rev${a}">Reversed</span>: <input type="checkbox" name="CV${a}"></div>\n<div id="dig${a}s" style="display:inline"><br>Skip 1<sup>st</sup> LED: <input id="sl${a}" type="checkbox" name="SL${a}"></div>\n<div id="dig${a}f" style="display:inline"><br>Off Refresh: <input id="rf${a}" type="checkbox" name="RF${a}">&nbsp;</div>\n<div id="dig${a}a" style="display:inline"><br>Auto-calculate white channel from RGB:<br><select name="AW${a}"><option value=0>None</option><option value=1>Brighter</option><option value=2>Accurate</option><option value=3>Dual</option></select>&nbsp;</div>\n</div>`;i.insertAdjacentHTML("beforeend",s)}-1==e&&(t[--a].remove(),--a),gId("+").style.display=a<maxB-1?"inline":"none",gId("-").style.display=a>0?"inline":"none",n||UI()}}function addBtn(e,n,t){var a=gId("btns").innerHTML,i="BT"+e;a+=`Button ${e} GPIO: <input type="number" min="-1" max="40" name="${i}" onchange="UI()" class="xs" value="${n}">`,a+=`&nbsp;<select name="${"BE"+e}">`,a+=`<option value="0" ${0==t?"selected":""}>Disabled</option>`,a+=`<option value="2" ${2==t?"selected":""}>Pushbutton</option>`,a+=`<option value="3" ${3==t?"selected":""}>Push inverted</option>`,a+=`<option value="4" ${4==t?"selected":""}>Switch</option>`,a+=`<option value="5" ${5==t?"selected":""}>PIR sensor</option>`,a+=`<option value="6" ${6==t?"selected":""}>Touch</option>`,a+=`<option value="7" ${7==t?"selected":""}>Analog</option>`,a+=`<option value="8" ${8==t?"selected":""}>Analog inverted</option>`,a+="</select>",a+=`<span style="cursor: pointer;" onclick="off('${i}')">&nbsp;&#215;</span><br>`,gId("btns").innerHTML=a}function tglSi(e){(customStarts=e)||(startsDirty=[]),UI()}function checkSi(){for(var e=!1,n=1;n<d.getElementsByClassName("iST").length;n++){parseInt(gId("ls"+(n-1)).value)+parseInt(d.getElementsByName("LC"+(n-1))[0].value)!=parseInt(gId("ls"+n).value)&&(e=!0,startsDirty[n]=!0)}0!=parseInt(gId("ls0").value)&&(e=!0,startsDirty[0]=!0),gId("si").checked=e,tglSi(e)}function uploadFile(e){var n=new XMLHttpRequest;n.addEventListener("load",(function(){showToast(this.responseText,this.status>=400)})),n.addEventListener("error",(function(e){showToast(e.stack,!0)})),n.open("POST","/upload");var t=new FormData;return t.append("data",d.Sf.data.files[0],e),n.send(t),d.Sf.data.value="",!1}function loadCfg(e){var n,t;"function"==typeof window.FileReader?(e.files?e.files[0]?(n=e.files[0],(t=new FileReader).onload=function(e){let n=e.target.result;var t=JSON.parse(n);if(t.hw){if(t.hw.led){for(var a=0;a<10;a++)addLEDs(-1);t.hw.led.ins.forEach((e,n,t)=>{addLEDs(1);for(var a=0;a<e.pin.length;a++)d.getElementsByName(`L${a}${n}`)[0].value=e.pin[a];d.getElementsByName("LT"+n)[0].value=e.type,d.getElementsByName("LS"+n)[0].value=e.start,d.getElementsByName("LC"+n)[0].value=e.len,d.getElementsByName("CO"+n)[0].value=e.order,d.getElementsByName("SL"+n)[0].checked=e.skip,d.getElementsByName("RF"+n)[0].checked=e.ref,d.getElementsByName("CV"+n)[0].checked=e.rev})}if(t.hw.btn){var i=t.hw.btn;Array.isArray(i.ins)&&(gId("btns").innerHTML=""),i.ins.forEach((e,n,t)=>{addBtn(n,e.pin[0],e.type)}),d.getElementsByName("TT")[0].value=i.tt}t.hw.ir&&(d.getElementsByName("IR")[0].value=t.hw.ir.pin,d.getElementsByName("IT")[0].value=t.hw.ir.type),t.hw.relay&&(d.getElementsByName("RL")[0].value=t.hw.relay.pin,d.getElementsByName("RM")[0].checked=t.hw.relay.inv),UI()}},t.readAsText(n)):alert("Please select a JSON file before clicking 'Apply'"):alert("This browser doesn't seem to support the `files` property of file inputs."),e.value=""):alert("The file API isn't supported on this browser yet.")}function GetV() {var d=document;
+var timeout,d=document,laprev=55,maxB=1,maxM=4e3,maxPB=4096,maxL=1333,maxLbquot=0,customStarts=!1,startsDirty=[];function H(){window.open("https://kno.wled.ge/features/settings/#led-settings")}function B(){window.open("/settings","_self")}function gId(e){return d.getElementById(e)}function off(e){d.getElementsByName(e)[0].value=-1}function showToast(e,n=!1){var t=gId("toast");t.innerHTML=e,t.className=n?"error":"show",clearTimeout(timeout),t.style.animation="none",timeout=setTimeout((function(){t.className=t.className.replace("show","")}),2900)}function bLimits(e,n,t,a){maxB=e,maxM=t,maxPB=n,maxL=a}function pinsOK(){var e=d.getElementsByTagName("input");for(i=0;i<e.length;i++){var n=e[i].name.substring(0,2);if("L0"==n||"L1"==n||"L2"==n||"L3"==n){var t=e[i].name.substring(2);if(parseInt(d.getElementsByName("LT"+t)[0].value,10)>=80)continue}if(("L0"==n||"L1"==n||"L2"==n||"L3"==n||"L4"==n||"RL"==n||"BT"==n||"IR"==n)&&""!=e[i].value&&"-1"!=e[i].value){if(d.um_p&&d.um_p.some(n=>n==parseInt(e[i].value,10)))return alert(`Sorry, pins ${JSON.stringify(d.um_p)} can't be used.`),e[i].value="",e[i].focus(),!1;if(e[i].value>5&&e[i].value<12)return alert("Sorry, pins 6-11 can not be used."),e[i].value="",e[i].focus(),!1;if("IR"!=n&&"BT"!=n&&e[i].value>33)return alert("Sorry, pins >33 are input only."),e[i].value="",e[i].focus(),!1;for(j=i+1;j<e.length;j++){var a=e[j].name.substring(0,2);if("L0"==a||"L1"==a||"L2"==a||"L3"==a||"L4"==a||"RL"==a||"BT"==a||"IR"==a){if("L"===a.substring(0,1)){var s=e[j].name.substring(2);if(parseInt(d.getElementsByName("LT"+s)[0].value,10)>=80)continue}if(""!=e[j].value&&e[i].value==e[j].value)return alert(`Pin conflict between ${e[i].name}/${e[j].name}!`),e[j].value="",e[j].focus(),!1}}}}return!0}function trySubmit(e){if(d.Sf.data.value="",e.preventDefault(),!pinsOK())return e.stopPropagation(),!1;if(bquot>100){var n="Too many LEDs for me to handle!";maxM<1e4&&(n+="\n\rConsider using an ESP32."),alert(n)}d.Sf.checkValidity()&&d.Sf.submit()}function S(){GetV(),checkSi(),setABL()}function enABL(){var e=gId("able").checked;d.Sf.LA.value=e?laprev:0,gId("abl").style.display=e?"inline":"none",gId("psu2").style.display=e?"inline":"none",d.Sf.LA.value>0&&setABL()}function enLA(){var e=d.Sf.LAsel.value;d.Sf.LA.value=e,gId("LAdis").style.display=50==e?"inline":"none",UI()}function setABL(){switch(gId("able").checked=!0,d.Sf.LAsel.value=50,parseInt(d.Sf.LA.value)){case 0:gId("able").checked=!1,enABL();break;case 30:d.Sf.LAsel.value=30;break;case 35:d.Sf.LAsel.value=35;break;case 55:d.Sf.LAsel.value=55;break;case 255:d.Sf.LAsel.value=255;break;default:gId("LAdis").style.display="inline"}gId("m1").innerHTML=maxM,d.getElementsByName("Sf")[0].addEventListener("submit",trySubmit),UI()}function getMem(e,n,t){return e<32?maxM<1e4&&3==t?e>29?20*n:15*n:maxM>=1e4?e>29?8*n:6*n:e>29?4*n:3*n:e>31&&e<48?5:44==e||45==e?4*n:3*n}function UI(e=!1){var n=!1,t=0;gId("ampwarning").style.display=d.Sf.MA.value>7200?"inline":"none",255==d.Sf.LA.value?laprev=12:d.Sf.LA.value>0&&(laprev=d.Sf.LA.value);var a=d.getElementsByTagName("select");for(i=0;i<a.length;i++)if("LT"==a[i].name.substring(0,2)){var s=a[i].name.substring(2),l=parseInt(a[i].value,10);gId("p0d"+s).innerHTML=l>=80&&l<96?"IP address:":l>49?"Data GPIO:":l>41?"GPIOs:":"GPIO:",gId("p1d"+s).innerHTML=l>49&&l<64?"Clk GPIO:":"";var o=d.getElementsByName("L1"+s)[0];for(t+=getMem(l,d.getElementsByName("LC"+s)[0].value,d.getElementsByName("L0"+s)[0].value),f=1;f<5;f++){(o=d.getElementsByName("L"+f+s)[0])&&(l>=80&&l<96&&f<4||l>49&&1==f||l>41&&l<50&&f+40<l?(o.style.display="inline",o.required=!0):(o.style.display="none",o.required=!1,o.value=""))}e&&(gId("rf"+s).checked=gId("rf"+s).checked||31==l,l>31&&l<48&&(d.getElementsByName("LC"+s)[0].value=1)),gId("rf"+s).onclick=31==l?function(){return!1}:function(){},n|=30==l||31==l||l>40&&l<46&&43!=l,gId("co"+s).style.display=l>=80&&l<96||41==l||42==l?"none":"inline",gId("dig"+s+"c").style.display=l>40&&l<48?"none":"inline",gId("dig"+s+"r").style.display=l>=80&&l<96?"none":"inline",gId("dig"+s+"s").style.display=l>=80&&l<96||l>40&&l<48?"none":"inline",gId("dig"+s+"f").style.display=l>=16&&l<32||l>=50&&l<64?"inline":"none",gId("dig"+s+"a").style.display=n?"inline":"none",gId("rev"+s).innerHTML=l>40&&l<48?"Inverted output":"Reversed (rotated 180°)",gId("psd"+s).innerHTML=l>40&&l<48?"Index:":"Start:"}var r=d.querySelectorAll(".wc"),u=r.length;for(i=0;i<u;i++)r[i].style.display=n?"inline":"none";var p=d.getElementsByTagName("input"),m=0,v=0,c=0;for(i=0;i<p.length;i++){var g=p[i].name.substring(0,2);s=p[i].name.substring(2);if("LC"!=g){if("L0"==g||"L1"==g)d.getElementsByName("LC"+s)[0].max=maxPB;if("L0"==g||"L1"==g||"L2"==g||"L3"==g){if((l=parseInt(d.getElementsByName("LT"+s)[0].value))>=80){p[i].max=255,p[i].min=0,p[i].style.color="#fff";continue}p[i].max=33,p[i].min=-1}if(("L0"==g||"L1"==g||"L2"==g||"L3"==g||"L4"==g||"RL"==g||"BT"==g||"IR"==g)&&""!=p[i].value&&"-1"!=p[i].value){var f=[];if(d.um_p&&Array.isArray(d.um_p))for(k=0;k<d.um_p.length;k++)f.push(d.um_p[k]);for(j=0;j<p.length;j++)if(i!=j){var y=p[j].name.substring(0,2);if("L0"==y||"L1"==y||"L2"==y||"L3"==y||"L4"==y||"RL"==y||"BT"==y||"IR"==y){if("L"===y.substring(0,1)){var 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LED memory"+(bquot>100?` (<b>ERROR: Using over ${maxM}B!</b>)`:""):"800 LEDs per output";var h=Math.ceil((100+v*laprev)/500)/2;h=h>5?Math.ceil(h):h;a="";var b=30==d.Sf.LAsel.value,B=255==d.Sf.LAsel.value;h<1.02&&!b&&!B?a="ESP 5V pin with 1A USB supply":(a+=b?"12V ":B?"WS2815 12V ":"5V ",a+=h,a+="A supply connected to LEDs");var S=Math.ceil((100+v*laprev)/1500)/2,E="(for most effects, ~";E+=S=S>5?Math.ceil(S):S,E+="A is enough)<br>",gId("psu").innerHTML=a,gId("psu2").innerHTML=B?"":E,gId("json").style.display=8==d.Sf.IT.value?"":"none"}function lastEnd(e){if(e<1)return 0;v=parseInt(d.getElementsByName("LS"+(e-1))[0].value)+parseInt(d.getElementsByName("LC"+(e-1))[0].value);var n=parseInt(d.getElementsByName("LT"+(e-1))[0].value);return n>31&&n<48&&(v=1),isNaN(v)?0:v}function addLEDs(e,n=!0){var t=d.getElementsByClassName("iST"),a=t.length;if(!(1==e&&a>=maxB||-1==e&&0==a)){var i=gId("mLC");if(1==e){var s=`<div class="iST">\n<hr style="width:260px">\n${a+1}:\n<select name="LT${a}" onchange="UI(true)">\n<option value="22" selected>WS281x</option>\n<option value="30">SK6812 RGBW</option>\n<option value="31">TM1814</option>\n<option value="24">400kHz</option>\n<option value="50">WS2801</option>\n<option value="51">APA102</option>\n<option value="52">LPD8806</option>\n<option value="53">P9813</option>\n<option value="41">PWM White</option>\n<option value="42">PWM WWCW</option>\n<option value="43">PWM RGB</option>\n<option value="44">PWM RGBW</option>\n<option value="45">PWM RGBWC</option>\n<option value="80">DDP RGB (network)</option>\n\x3c!--option value="81">E1.31 RGB (network)</option--\x3e\n\x3c!--option value="82">ArtNet RGB (network)</option--\x3e\n</select>&nbsp;\n<div id="co${a}" style="display:inline">Color Order:\n<select name="CO${a}">\n<option value="0">GRB</option>\n<option value="1">RGB</option>\n<option value="2">BRG</option>\n<option value="3">RBG</option>\n<option value="4">BGR</option>\n<option value="5">GBR</option>\n</select></div>\n<br>\n<span id="psd${a}">Start:</span> <input type="number" name="LS${a}" id="ls${a}" class="l starts" min="0" max="8191" value="${lastEnd(a)}" oninput="startsDirty[${a}]=true;UI();" required />&nbsp;\n<div id="dig${a}c" style="display:inline">Length: <input type="number" name="LC${a}" class="l" min="1" max="${maxPB}" value="1" required oninput="UI()" /></div>\n<br>\n<span id="p0d${a}">GPIO:</span> <input type="number" name="L0${a}" min="0" max="33" required class="s" onchange="UI()"/>\n<span id="p1d${a}"></span><input type="number" name="L1${a}" min="0" max="33" class="s" onchange="UI()"/>\n<span id="p2d${a}"></span><input type="number" name="L2${a}" min="0" max="33" class="s" onchange="UI()"/>\n<span id="p3d${a}"></span><input type="number" name="L3${a}" min="0" max="33" class="s" onchange="UI()"/>\n<span id="p4d${a}"></span><input type="number" name="L4${a}" min="0" max="33" class="s" onchange="UI()"/>\n<div id="dig${a}r" style="display:inline"><br><span id="rev${a}">Reversed</span>: <input type="checkbox" name="CV${a}"></div>\n<div id="dig${a}s" style="display:inline"><br>Skip 1<sup>st</sup> LED: <input id="sl${a}" type="checkbox" name="SL${a}"></div>\n<div id="dig${a}f" style="display:inline"><br>Off Refresh: <input id="rf${a}" type="checkbox" name="RF${a}">&nbsp;</div>\n<div id="dig${a}a" style="display:inline"><br>Auto-calculate white channel from RGB:<br><select name="AW${a}"><option value=0>None</option><option value=1>Brighter</option><option value=2>Accurate</option><option value=3>Dual</option></select>&nbsp;</div>\n</div>`;i.insertAdjacentHTML("beforeend",s)}-1==e&&(t[--a].remove(),--a),gId("+").style.display=a<maxB-1?"inline":"none",gId("-").style.display=a>0?"inline":"none",n||UI()}}function addBtn(e,n,t){var a=gId("btns").innerHTML,i="BT"+String.fromCharCode((e<10?48:55)+e);a+=`Button ${e} GPIO: <input type="number" min="-1" max="40" name="${i}" onchange="UI()" class="xs" value="${n}">`,a+=`&nbsp;<select name="${"BE"+String.fromCharCode((e<10?48:55)+e)}">`,a+=`<option value="0" ${0==t?"selected":""}>Disabled</option>`,a+=`<option value="2" ${2==t?"selected":""}>Pushbutton</option>`,a+=`<option value="3" ${3==t?"selected":""}>Push inverted</option>`,a+=`<option value="4" ${4==t?"selected":""}>Switch</option>`,a+=`<option value="5" ${5==t?"selected":""}>PIR sensor</option>`,a+=`<option value="6" ${6==t?"selected":""}>Touch</option>`,a+=`<option value="7" ${7==t?"selected":""}>Analog</option>`,a+=`<option value="8" ${8==t?"selected":""}>Analog inverted</option>`,a+="</select>",a+=`<span style="cursor: pointer;" onclick="off('${i}')">&nbsp;&#215;</span><br>`,gId("btns").innerHTML=a}function tglSi(e){(customStarts=e)||(startsDirty=[]),UI()}function checkSi(){for(var e=!1,n=1;n<d.getElementsByClassName("iST").length;n++){parseInt(gId("ls"+(n-1)).value)+parseInt(d.getElementsByName("LC"+(n-1))[0].value)!=parseInt(gId("ls"+n).value)&&(e=!0,startsDirty[n]=!0)}0!=parseInt(gId("ls0").value)&&(e=!0,startsDirty[0]=!0),gId("si").checked=e,tglSi(e)}function uploadFile(e){var n=new XMLHttpRequest;n.addEventListener("load",(function(){showToast(this.responseText,this.status>=400)})),n.addEventListener("error",(function(e){showToast(e.stack,!0)})),n.open("POST","/upload");var t=new FormData;return t.append("data",d.Sf.data.files[0],e),n.send(t),d.Sf.data.value="",!1}function loadCfg(e){var n,t;"function"==typeof window.FileReader?(e.files?e.files[0]?(n=e.files[0],(t=new FileReader).onload=function(e){let n=e.target.result;var t=JSON.parse(n);if(t.hw){if(t.hw.led){for(var a=0;a<10;a++)addLEDs(-1);t.hw.led.ins.forEach((e,n,t)=>{addLEDs(1);for(var a=0;a<e.pin.length;a++)d.getElementsByName(`L${a}${n}`)[0].value=e.pin[a];d.getElementsByName("LT"+n)[0].value=e.type,d.getElementsByName("LS"+n)[0].value=e.start,d.getElementsByName("LC"+n)[0].value=e.len,d.getElementsByName("CO"+n)[0].value=e.order,d.getElementsByName("SL"+n)[0].checked=e.skip,d.getElementsByName("RF"+n)[0].checked=e.ref,d.getElementsByName("CV"+n)[0].checked=e.rev})}if(t.hw.btn){var i=t.hw.btn;Array.isArray(i.ins)&&(gId("btns").innerHTML=""),i.ins.forEach((e,n,t)=>{addBtn(n,e.pin[0],e.type)}),d.getElementsByName("TT")[0].value=i.tt}t.hw.ir&&(d.getElementsByName("IR")[0].value=t.hw.ir.pin,d.getElementsByName("IT")[0].value=t.hw.ir.type),t.hw.relay&&(d.getElementsByName("RL")[0].value=t.hw.relay.pin,d.getElementsByName("RM")[0].checked=t.hw.relay.inv),UI()}},t.readAsText(n)):alert("Please select a JSON file before clicking 'Apply'"):alert("This browser doesn't seem to support the `files` property of file inputs."),e.value=""):alert("The file API isn't supported on this browser yet.")}function GetV() {var d=document;
 %CSS%%SCSS%</head><body onload="S()"><form
  id="form_s" name="Sf" method="post"><div class="toprow"><div class="helpB">
 <button type="button" onclick="H()">?</button></div><button type="button" 
diff --git a/wled00/set.cpp b/wled00/set.cpp
index be9a9b36..2dd0b000 100644
--- a/wled00/set.cpp
+++ b/wled00/set.cpp
@@ -128,8 +128,8 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
     rlyMde = (bool)request->hasArg(F("RM"));
 
     for (uint8_t i=0; i<WLED_MAX_BUTTONS; i++) {
-      char bt[4] = "BT"; bt[2] = 48+i; bt[3] = 0; // button pin
-      char be[4] = "BE"; be[2] = 48+i; be[3] = 0; // button type
+      char bt[4] = "BT"; bt[2] = (i<10?48:55)+i; bt[3] = 0; // button pin (use A,B,C,... if WLED_MAX_BUTTONS>10)
+      char be[4] = "BE"; be[2] = (i<10?48:55)+i; be[3] = 0; // button type (use A,B,C,... if WLED_MAX_BUTTONS>10)
       int hw_btn_pin = request->arg(bt).toInt();
       if (pinManager.allocatePin(hw_btn_pin,false,PinOwner::Button)) {
         btnPin[i] = hw_btn_pin;
