331 lines
23 KiB
HTML
331 lines
23 KiB
HTML
<title>House Lighting, Full Wiring (transistor build)</title>
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<style>
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:root{ --bg:#faf8f4;--ink:#1c1a17;--muted:#6b6459;--card:#fff;--line:#3a352e;
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--red:#c0392b;--grn:#2e7d32;--slate:#5b6b7a;--amber:#c98a1a;--rule:#d8d2c7; }
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@media (prefers-color-scheme:dark){:root{--bg:#17150f;--ink:#eee7d9;--muted:#a49a88;
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--card:#211e17;--line:#c9c2b4;--red:#e5675a;--grn:#6bbf70;--slate:#8fa3b5;--amber:#e0b24e;--rule:#3a352b;}}
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:root[data-theme=light]{--bg:#faf8f4;--ink:#1c1a17;--muted:#6b6459;--card:#fff;--line:#3a352e;
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--red:#c0392b;--grn:#2e7d32;--slate:#5b6b7a;--amber:#c98a1a;--rule:#d8d2c7;}
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:root[data-theme=dark]{--bg:#17150f;--ink:#eee7d9;--muted:#a49a88;--card:#211e17;--line:#c9c2b4;
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--red:#e5675a;--grn:#6bbf70;--slate:#8fa3b5;--amber:#e0b24e;--rule:#3a352b;}
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body{background:var(--bg);color:var(--ink);
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font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;margin:0;padding:24px;}
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.wrap{max-width:1000px;margin:0 auto;}
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h1{font-size:20px;margin:0 0 2px;} .sub{color:var(--muted);margin:0 0 18px;font-size:13px;}
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.card{background:var(--card);border:1px solid var(--rule);border-radius:12px;padding:16px;margin-bottom:18px;}
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.scroll{overflow-x:auto;}
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svg{display:block;margin:0 auto;max-width:100%;height:auto;min-width:820px;}
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text{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;fill:var(--ink);}
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.lbl{font-size:12.5px;} .sm{font-size:10.5px;fill:var(--muted);} .zn{font-size:13px;font-weight:bold;}
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.w5{stroke:var(--red);stroke-width:3;fill:none;}
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.wg{stroke:var(--line);stroke-width:3.4;fill:none;}
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.wire{stroke:var(--line);stroke-width:2;fill:none;}
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.wsig{stroke:var(--slate);stroke-width:2;fill:none;stroke-dasharray:5 4;}
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.node{fill:var(--line);} .chip{fill:var(--card);stroke:var(--line);stroke-width:2;}
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table{border-collapse:collapse;width:100%;font-size:13px;margin-top:4px;}
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th,td{border:1px solid var(--rule);padding:6px 9px;text-align:left;} th{background:rgba(128,128,128,.08);}
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code{font-family:ui-monospace,Menlo,monospace;background:rgba(128,128,128,.12);padding:1px 5px;border-radius:4px;font-size:.9em;}
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.key{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:10px;}
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.key span{display:inline-flex;align-items:center;gap:6px;} .sw{width:20px;height:0;border-top:3px solid;}
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ul{margin:6px 0 0;padding-left:18px;font-size:13.5px;} li{margin:2px 0;}
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</style>
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<div class="wrap">
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<h1>House Lighting, full wiring (transistor build)</h1>
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<p class="sub">4 zones · PN2222 low-side switch per zone · Arduino Uno R3 · 5V USB · <code>townhouse_lights.ino</code></p>
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<div class="card scroll">
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<svg viewBox="0 0 1000 640" role="img" aria-label="Full system wiring diagram">
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<!-- ===== RAILS ===== -->
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<line class="w5" x1="60" y1="70" x2="980" y2="70"/>
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<text class="lbl" x="300" y="62" fill="var(--red)">+5V rail</text>
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<line class="wg" x1="60" y1="590" x2="980" y2="590"/>
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<text class="lbl" x="300" y="608">GND rail</text>
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<!-- ===== POWER INPUT (top-left) ===== -->
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<rect class="chip" x="40" y="120" width="96" height="30" rx="4"/>
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<text class="sm" x="48" y="139">USB bank 5V</text>
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<rect class="chip" x="40" y="162" width="96" height="26" rx="4"/>
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<text class="sm" x="46" y="179">USB (bench)</text>
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<!-- master switch on bank +line -->
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<line class="w5" x1="136" y1="132" x2="160" y2="132"/>
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<circle class="node" cx="160" cy="132" r="3"/><line class="w5" x1="163" y1="130" x2="182" y2="120"/>
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<circle class="node" cx="185" cy="132" r="3"/><text class="sm" x="150" y="115">master sw</text>
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<line class="w5" x1="185" y1="132" x2="208" y2="132"/>
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<!-- diode OR -->
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<polygon points="208,124 224,132 208,140" fill="none" stroke="var(--red)" stroke-width="2"/>
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<line x1="224" y1="124" x2="224" y2="140" stroke="var(--red)" stroke-width="2"/>
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<line class="w5" x1="224" y1="132" x2="250" y2="132"/>
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<line class="w5" x1="136" y1="175" x2="208" y2="175"/>
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<polygon points="208,167 224,175 208,183" fill="none" stroke="var(--red)" stroke-width="2"/>
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<line class="w5" x1="224" y1="175" x2="250" y2="175"/>
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<line class="w5" x1="250" y1="132" x2="250" y2="175"/>
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<circle class="node" cx="250" cy="132" r="3"/>
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<line class="w5" x1="250" y1="132" x2="250" y2="70"/>
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<text class="sm" x="196" y="200">MBR030 diode-OR → rail</text>
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<!-- GND from bank -->
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<line class="wg" x1="88" y1="150" x2="88" y2="590"/>
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<circle class="node" cx="88" cy="590" r="3"/>
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<line class="wg" x1="88" y1="188" x2="88" y2="200"/>
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<!-- ===== ARDUINO ===== -->
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<rect class="chip" x="40" y="250" width="120" height="230" rx="8"/>
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<text class="lbl" x="70" y="242">Arduino Uno</text>
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<!-- 5V/GND to rails -->
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<text class="sm" x="50" y="285">5V</text>
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<line class="w5" x1="160" y1="280" x2="180" y2="280"/><line class="w5" x1="180" y1="280" x2="180" y2="70"/>
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<circle class="node" cx="180" cy="70" r="3"/>
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<text class="sm" x="46" y="474">GND</text>
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<line class="wg" x1="100" y1="480" x2="100" y2="590"/>
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<circle class="node" cx="100" cy="480" r="3"/><circle class="node" cx="100" cy="590" r="3"/>
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<!-- signal pins -->
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<text class="sm" x="120" y="320">D3</text><circle class="node" cx="160" cy="315" r="3"/>
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<text class="sm" x="120" y="350">D5</text><circle class="node" cx="160" cy="345" r="3"/>
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<text class="sm" x="120" y="380">D6</text><circle class="node" cx="160" cy="375" r="3"/>
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<text class="sm" x="120" y="410">D9</text><circle class="node" cx="160" cy="405" r="3"/>
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<text class="sm" x="120" y="440">D2</text><circle class="node" cx="160" cy="435" r="3"/>
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<text class="sm" x="120" y="468">D4</text><circle class="node" cx="160" cy="463" r="3"/>
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<!-- ===== BUTTONS: D2 scene, D4 section ===== -->
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<line class="wire" x1="160" y1="435" x2="210" y2="435"/>
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<rect class="chip" x="210" y="424" width="34" height="22" rx="4"/><text class="sm" x="214" y="439">BTN</text>
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<line class="wg" x1="244" y1="435" x2="270" y2="435"/>
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<text class="sm" x="278" y="431">scene (D2)</text>
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<line class="wire" x1="160" y1="463" x2="210" y2="463"/>
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<rect class="chip" x="210" y="452" width="34" height="22" rx="4"/><text class="sm" x="214" y="467">BTN</text>
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<line class="wg" x1="244" y1="463" x2="270" y2="463"/>
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<text class="sm" x="278" y="467">section (D4)</text>
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<line class="wg" x1="270" y1="435" x2="270" y2="590"/>
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<circle class="node" cx="270" cy="463" r="3"/><circle class="node" cx="270" cy="590" r="3"/>
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<!-- ===== ZONE STAGES ===== -->
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<!-- each: 2 LED branches (rep) + count, transistor, base from pin via 1k -->
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<!-- GF cx=430 D3 y315 Q1 -->
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<g>
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<!-- branches -->
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<line class="w5" x1="414" y1="70" x2="414" y2="96"/><circle class="node" cx="414" cy="70" r="2.5"/>
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<polygon points="404,96 424,96 414,116" fill="none" stroke="var(--amber)" stroke-width="2"/>
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<line x1="404" y1="116" x2="424" y2="116" stroke="var(--amber)" stroke-width="2.3"/>
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<line class="wire" x1="414" y1="116" x2="414" y2="132"/>
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<rect class="chip" x="398" y="132" width="32" height="34" rx="3"/><text class="sm" x="401" y="153">220</text>
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<line class="wire" x1="446" y1="116" x2="446" y2="132"/>
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<rect class="chip" x="430" y="132" width="32" height="34" rx="3"/><text class="sm" x="433" y="153">220</text>
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<line class="wire" x1="446" y1="166" x2="446" y2="360"/>
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<line class="wire" x1="414" y1="360" x2="446" y2="360"/>
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<text class="zn" x="404" y="210">GF · Q1</text><text class="sm" x="404" y="226">×2 LEDs</text>
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<!-- transistor -->
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<line class="wire" x1="430" y1="360" x2="430" y2="392"/>
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<circle class="chip" cx="430" cy="422" r="28"/><text class="sm" x="418" y="426">Q1</text>
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<line class="wg" x1="430" y1="450" x2="430" y2="590"/><circle class="node" cx="430" cy="590" r="2.5"/>
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<text class="sm" x="438" y="470">E</text><text class="sm" x="438" y="392">C</text>
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<!-- base from D3 -->
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<line class="wsig" x1="160" y1="315" x2="335" y2="315"/>
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<line class="wsig" x1="335" y1="315" x2="335" y2="422"/>
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<rect class="chip" x="360" y="412" width="34" height="20" rx="3"/><text class="sm" x="363" y="426">1kΩ</text>
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<line class="wsig" x1="335" y1="422" x2="360" y2="422"/>
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<line class="wsig" x1="394" y1="422" x2="402" y2="422"/>
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</g>
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<!-- UP cx=600 D5 y345 Q2 -->
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<g>
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<line class="w5" x1="584" y1="70" x2="584" y2="96"/><circle class="node" cx="584" cy="70" r="2.5"/>
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<polygon points="574,96 594,96 584,116" fill="none" stroke="var(--amber)" stroke-width="2"/>
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<line x1="574" y1="116" x2="594" y2="116" stroke="var(--amber)" stroke-width="2.3"/>
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<line class="wire" x1="584" y1="116" x2="584" y2="132"/>
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<rect class="chip" x="568" y="132" width="32" height="34" rx="3"/><text class="sm" x="571" y="153">220</text>
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<line class="wire" x1="584" y1="166" x2="584" y2="360"/>
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<line class="w5" x1="616" y1="70" x2="616" y2="96"/><circle class="node" cx="616" cy="70" r="2.5"/>
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<polygon points="606,96 626,96 616,116" fill="none" stroke="var(--amber)" stroke-width="2"/>
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<line x1="606" y1="116" x2="626" y2="116" stroke="var(--amber)" stroke-width="2.3"/>
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<rect class="chip" x="600" y="132" width="32" height="34" rx="3"/><text class="sm" x="603" y="153">220</text>
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<line class="wire" x1="616" y1="166" x2="616" y2="360"/>
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<line class="wire" x1="584" y1="360" x2="616" y2="360"/>
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<text class="zn" x="574" y="210">UP · Q2</text><text class="sm" x="574" y="226">×3 LEDs</text>
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<line class="wire" x1="600" y1="360" x2="600" y2="392"/>
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<circle class="chip" cx="600" cy="422" r="28"/><text class="sm" x="588" y="426">Q2</text>
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<line class="wg" x1="600" y1="450" x2="600" y2="590"/><circle class="node" cx="600" cy="590" r="2.5"/>
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<line class="wsig" x1="160" y1="345" x2="505" y2="345"/>
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<line class="wsig" x1="505" y1="345" x2="505" y2="422"/>
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<rect class="chip" x="530" y="412" width="34" height="20" rx="3"/><text class="sm" x="533" y="426">1kΩ</text>
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||
<line class="wsig" x1="505" y1="422" x2="530" y2="422"/>
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<line class="wsig" x1="564" y1="422" x2="572" y2="422"/>
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</g>
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<!-- EXT cx=770 D6 y375 Q3 (5 LEDs, draw 2 + note) -->
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<g>
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<line class="w5" x1="754" y1="70" x2="754" y2="96"/><circle class="node" cx="754" cy="70" r="2.5"/>
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<polygon points="744,96 764,96 754,116" fill="none" stroke="var(--amber)" stroke-width="2"/>
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<line x1="744" y1="116" x2="764" y2="116" stroke="var(--amber)" stroke-width="2.3"/>
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<line class="wire" x1="754" y1="116" x2="754" y2="132"/>
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<rect class="chip" x="738" y="132" width="32" height="34" rx="3"/><text class="sm" x="741" y="153">220</text>
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||
<line class="wire" x1="754" y1="166" x2="754" y2="360"/>
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<line class="w5" x1="786" y1="70" x2="786" y2="96"/><circle class="node" cx="786" cy="70" r="2.5"/>
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<polygon points="776,96 796,96 786,116" fill="none" stroke="var(--amber)" stroke-width="2"/>
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<line x1="776" y1="116" x2="796" y2="116" stroke="var(--amber)" stroke-width="2.3"/>
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<line class="wire" x1="786" y1="116" x2="786" y2="132"/>
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<rect class="chip" x="770" y="132" width="32" height="34" rx="3"/><text class="sm" x="773" y="153">220</text>
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<line class="wire" x1="786" y1="166" x2="786" y2="360"/>
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||
<line class="wire" x1="754" y1="360" x2="786" y2="360"/>
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<text class="zn" x="744" y="210">EXT · Q3</text><text class="sm" x="744" y="226">×5 LEDs</text>
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||
<line class="wire" x1="770" y1="360" x2="770" y2="392"/>
|
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<circle class="chip" cx="770" cy="422" r="28"/><text class="sm" x="758" y="426">Q3</text>
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||
<line class="wg" x1="770" y1="450" x2="770" y2="590"/><circle class="node" cx="770" cy="590" r="2.5"/>
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||
<line class="wsig" x1="160" y1="375" x2="675" y2="375"/>
|
||
<line class="wsig" x1="675" y1="375" x2="675" y2="422"/>
|
||
<rect class="chip" x="700" y="412" width="34" height="20" rx="3"/><text class="sm" x="703" y="426">1kΩ</text>
|
||
<line class="wsig" x1="675" y1="422" x2="700" y2="422"/>
|
||
<line class="wsig" x1="734" y1="422" x2="742" y2="422"/>
|
||
</g>
|
||
<!-- FIRE cx=930 D9 y405 Q4 (1 LED) -->
|
||
<g>
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|
||
<line class="wire" x1="930" y1="166" x2="930" y2="360"/>
|
||
<text class="zn" x="906" y="210">FIRE · Q4</text><text class="sm" x="912" y="226">×1 LED</text>
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||
<text class="sm" x="906" y="242" fill="var(--red)">RED · flicker</text>
|
||
<line class="wire" x1="930" y1="360" x2="930" y2="392"/>
|
||
<circle class="chip" cx="930" cy="422" r="28"/><text class="sm" x="918" y="426">Q4</text>
|
||
<line class="wg" x1="930" y1="450" x2="930" y2="590"/><circle class="node" cx="930" cy="590" r="2.5"/>
|
||
<line class="wsig" x1="160" y1="405" x2="845" y2="405"/>
|
||
<line class="wsig" x1="845" y1="405" x2="845" y2="422"/>
|
||
<rect class="chip" x="860" y="412" width="34" height="20" rx="3"/><text class="sm" x="863" y="426">1kΩ</text>
|
||
<line class="wsig" x1="845" y1="422" x2="860" y2="422"/>
|
||
<line class="wsig" x1="894" y1="422" x2="902" y2="422"/>
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||
</g>
|
||
</svg>
|
||
<div class="key">
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||
<span><span class="sw" style="border-color:var(--red)"></span>+5V</span>
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||
<span><span class="sw" style="border-color:var(--line)"></span>wire / GND</span>
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||
<span><span class="sw" style="border-color:var(--slate);border-top-style:dashed"></span>signal (PWM → base)</span>
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||
<span><span class="sw" style="border-color:var(--amber)"></span>LED (warm white)</span>
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||
<span><span class="sw" style="border-color:var(--red)"></span>FIRE = red LED</span>
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||
<span>· crossing lines with no dot = not connected</span>
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||
</div>
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||
</div>
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||
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||
<div class="card scroll">
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||
<strong>Running the wire, shared buses, not home-runs</strong>
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||
<p class="sm" style="margin:6px 0 12px">One <code>+5V</code> wire snakes past every fixture (shared by all zones).
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||
Each zone has one <code>return</code> wire back to its transistor. Every LED just bridges the two nearest buses.</p>
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||
<svg viewBox="0 0 900 330" role="img" aria-label="Bus wiring: shared +5V, per-zone returns">
|
||
<!-- +5V bus -->
|
||
<line class="w5" x1="40" y1="50" x2="860" y2="50"/>
|
||
<text class="lbl" x="40" y="42" fill="var(--red)">+5V bus, shared by ALL fixtures</text>
|
||
<!-- GF return bus (green) -->
|
||
<line x1="40" y1="210" x2="660" y2="210" stroke="var(--grn)" stroke-width="3" fill="none"/>
|
||
<text class="sm" x="666" y="214" fill="var(--grn)">GF return → Q1</text>
|
||
<!-- EXT return bus (slate) -->
|
||
<line x1="40" y1="270" x2="800" y2="270" stroke="var(--slate)" stroke-width="3" fill="none"/>
|
||
<text class="sm" x="666" y="288" fill="var(--slate)">EXT return → Q3</text>
|
||
<!-- board hint -->
|
||
<text class="sm" x="40" y="305">(returns run back to the driver board)</text>
|
||
|
||
<!-- fixture template: EXT at 150,450,750 ; GF at 300,600 -->
|
||
<!-- EXT fixture 150 -->
|
||
<g>
|
||
<circle class="node" cx="150" cy="50" r="3.2" fill="var(--red)"/>
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<line class="wire" x1="150" y1="50" x2="150" y2="76"/>
|
||
<polygon points="140,76 160,76 150,96" fill="none" stroke="var(--amber)" stroke-width="2"/>
|
||
<line x1="140" y1="96" x2="160" y2="96" stroke="var(--amber)" stroke-width="2.3"/>
|
||
<line class="wire" x1="150" y1="96" x2="150" y2="112"/>
|
||
<rect class="chip" x="134" y="112" width="32" height="30" rx="3"/><text class="sm" x="137" y="131">220</text>
|
||
<line class="wire" x1="150" y1="142" x2="150" y2="270"/>
|
||
<circle class="node" cx="150" cy="270" r="3.2" fill="var(--slate)"/>
|
||
<text class="sm" x="128" y="164">porch A</text>
|
||
</g>
|
||
<!-- GF fixture 300 -->
|
||
<g>
|
||
<circle class="node" cx="300" cy="50" r="3.2" fill="var(--red)"/>
|
||
<line class="wire" x1="300" y1="50" x2="300" y2="76"/>
|
||
<polygon points="290,76 310,76 300,96" fill="none" stroke="var(--amber)" stroke-width="2"/>
|
||
<line x1="290" y1="96" x2="310" y2="96" stroke="var(--amber)" stroke-width="2.3"/>
|
||
<line class="wire" x1="300" y1="96" x2="300" y2="112"/>
|
||
<rect class="chip" x="284" y="112" width="32" height="30" rx="3"/><text class="sm" x="287" y="131">220</text>
|
||
<line class="wire" x1="300" y1="142" x2="300" y2="210"/>
|
||
<circle class="node" cx="300" cy="210" r="3.2" fill="var(--grn)"/>
|
||
<text class="sm" x="280" y="164">GF living</text>
|
||
</g>
|
||
<!-- EXT fixture 450 (crosses GF bus, no dot) -->
|
||
<g>
|
||
<circle class="node" cx="450" cy="50" r="3.2" fill="var(--red)"/>
|
||
<line class="wire" x1="450" y1="50" x2="450" y2="76"/>
|
||
<polygon points="440,76 460,76 450,96" fill="none" stroke="var(--amber)" stroke-width="2"/>
|
||
<line x1="440" y1="96" x2="460" y2="96" stroke="var(--amber)" stroke-width="2.3"/>
|
||
<line class="wire" x1="450" y1="96" x2="450" y2="112"/>
|
||
<rect class="chip" x="434" y="112" width="32" height="30" rx="3"/><text class="sm" x="437" y="131">220</text>
|
||
<line class="wire" x1="450" y1="142" x2="450" y2="270"/>
|
||
<circle class="node" cx="450" cy="270" r="3.2" fill="var(--slate)"/>
|
||
<text class="sm" x="428" y="164">entry</text>
|
||
<text class="sm" x="458" y="205" fill="var(--muted)">← no dot: crosses</text>
|
||
<text class="sm" x="458" y="218" fill="var(--muted)">GF bus, not joined</text>
|
||
</g>
|
||
<!-- GF fixture 600 -->
|
||
<g>
|
||
<circle class="node" cx="600" cy="50" r="3.2" fill="var(--red)"/>
|
||
<line class="wire" x1="600" y1="50" x2="600" y2="76"/>
|
||
<polygon points="590,76 610,76 600,96" fill="none" stroke="var(--amber)" stroke-width="2"/>
|
||
<line x1="590" y1="96" x2="610" y2="96" stroke="var(--amber)" stroke-width="2.3"/>
|
||
<line class="wire" x1="600" y1="96" x2="600" y2="112"/>
|
||
<rect class="chip" x="584" y="112" width="32" height="30" rx="3"/><text class="sm" x="587" y="131">220</text>
|
||
<line class="wire" x1="600" y1="142" x2="600" y2="210"/>
|
||
<circle class="node" cx="600" cy="210" r="3.2" fill="var(--grn)"/>
|
||
<text class="sm" x="580" y="164">GF kitchen</text>
|
||
</g>
|
||
<!-- EXT fixture 750 -->
|
||
<g>
|
||
<circle class="node" cx="750" cy="50" r="3.2" fill="var(--red)"/>
|
||
<line class="wire" x1="750" y1="50" x2="750" y2="76"/>
|
||
<polygon points="740,76 760,76 750,96" fill="none" stroke="var(--amber)" stroke-width="2"/>
|
||
<line x1="740" y1="96" x2="760" y2="96" stroke="var(--amber)" stroke-width="2.3"/>
|
||
<line class="wire" x1="750" y1="96" x2="750" y2="112"/>
|
||
<rect class="chip" x="734" y="112" width="32" height="30" rx="3"/><text class="sm" x="737" y="131">220</text>
|
||
<line class="wire" x1="750" y1="142" x2="750" y2="270"/>
|
||
<circle class="node" cx="750" cy="270" r="3.2" fill="var(--slate)"/>
|
||
<text class="sm" x="726" y="164">porch B</text>
|
||
</g>
|
||
</svg>
|
||
<div class="key">
|
||
<span><span class="sw" style="border-color:var(--red)"></span>+5V bus (shared)</span>
|
||
<span><span class="sw" style="border-color:var(--grn)"></span>GF return</span>
|
||
<span><span class="sw" style="border-color:var(--slate)"></span>EXT return</span>
|
||
<span>· solid dot = tap/join · line crossing with no dot = not connected</span>
|
||
</div>
|
||
<ul>
|
||
<li><strong>Daisy-chain, don't home-run:</strong> tap the passing +5V and zone-return buses at each fixture, don't run separate pairs all the way back to the board.</li>
|
||
<li><strong>One +5V for the whole house</strong> + <strong>one return per zone</strong> (4 zones → 4 returns; 6 → 6). That's the total wire count out of the board.</li>
|
||
<li><strong>Different zones near each other</strong> share the +5V bus but must keep <em>separate</em> return wires, never let two zone returns touch, or they switch together.</li>
|
||
<li>Put each <strong>220Ω at the LED</strong> (heat-shrink it) so the buses stay clean two-conductor runs. Color-code: red = +5V, a distinct color per return.</li>
|
||
</ul>
|
||
</div>
|
||
|
||
<div class="card">
|
||
<table>
|
||
<tr><th>Zone</th><th>Pin → 1kΩ → base</th><th>Transistor</th><th>LEDs (each +5V→LED→220Ω→collector)</th></tr>
|
||
<tr><td>GF_INT</td><td><code>D3</code></td><td>Q1 (PN2222)</td><td>2, living + kitchen ceilings</td></tr>
|
||
<tr><td>UP_INT</td><td><code>D5</code></td><td>Q2</td><td>3, 2 bedroom ceilings, attic</td></tr>
|
||
<tr><td>EXT</td><td><code>D6</code></td><td>Q3</td><td>5, porch A/B, entry, deck, balcony</td></tr>
|
||
<tr><td>FIRE</td><td><code>D9</code></td><td>Q4</td><td>1, hearth · <b style="color:var(--red)">RED LED</b> (flickers)</td></tr>
|
||
<tr><td>scene button</td><td><code>D2</code> → button → GND</td><td>, </td><td>cycles scenes / wakes</td></tr>
|
||
<tr><td>section button</td><td><code>D4</code> → button → GND</td><td>, </td><td>spotlight one zone: GF→UP→EXT→FIRE→off</td></tr>
|
||
</table>
|
||
</div>
|
||
|
||
<div class="card">
|
||
<strong>Build & wiring rules</strong>
|
||
<ul>
|
||
<li>Every zone's transistor: <code>E</code>→GND rail, <code>C</code>→that zone's LED bundle, base←pin through 1kΩ. Legs (flat face toward you): <code>E · B · C</code>.</li>
|
||
<li>Every LED: long leg (+) → <code>+5V</code>, short leg (−) → its own 220Ω → the zone's collector. One resistor per LED.</li>
|
||
<li>Add more LEDs to a zone by hanging more of these branches in parallel on the same collector.</li>
|
||
<li><strong>FIRE zone uses a RED LED</strong>; all other zones warm-white/white. (Color is hardware only, the sketch just sets brightness.)</li>
|
||
<li><strong>Two buttons</strong>, each to GND (internal pull-ups, no resistor): <code>D2</code> = scene cycle, <code>D4</code> = section spotlight (one zone at a time). Either wakes from idle.</li>
|
||
<li><strong>Power:</strong> USB bank → master switch → diode-OR → +5V rail. Bench-test on computer USB alone. Only ONE 5V source live at a time (the diode-OR makes that safe if both are ever connected).</li>
|
||
<li>Common ground everywhere: bank −, Arduino GND, all emitters share the one GND rail.</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|