ESP32 LED Control

ESP32 NeoPixel Control

Click a color:

\n Red\n Green\n Blue\n White\n Off\n

You can also call /set?r=R&g=G&b=B manually.

\n\n\n )\";\n\n server.send(200, \"text/html\", html);\n}\n\nvoid handleSet() {\n // get r, g, b from URL query, default 0\n int r = server.hasArg(\"r\") ? server.arg(\"r\").toInt() : 0;\n int g = server.hasArg(\"g\") ? server.arg(\"g\").toInt() : 0;\n int b = server.hasArg(\"b\") ? server.arg(\"b\").toInt() : 0;\n\n // clamp 0–255\n if (r < 0) r = 0; if (r > 255) r = 255;\n if (g < 0) g = 0; if (g > 255) g = 255;\n if (b < 0) b = 0; if (b > 255) b = 255;\n\n setColor((uint8_t)r, (uint8_t)g, (uint8_t)b);\n\n String resp = \"Set color to R=\" + String(r) +\n \" G=\" + String(g) +\n \" B=\" + String(b) + \"\\n\";\n resp += \"Back to control page\";\n server.send(200, \"text/html\", resp);\n}\n\nvoid handleNotFound() {\n server.send(404, \"text/plain\", \"Not found\");\n}\n\nvoid setup() {\n Serial.begin(115200);\n delay(1000);\n\n // NeoPixel init\n pixels.begin();\n pixels.setBrightness(BRIGHTNESS);\n setColor(0, 0, 0); // start off\n\n // WiFi AP mode\n WiFi.mode(WIFI_AP);\n bool ap_ok = WiFi.softAP(ap_ssid, ap_password);\n if (ap_ok) {\n Serial.println(\"AP started\");\n Serial.print(\"SSID: \");\n Serial.println(ap_ssid);\n Serial.print(\"Password: \");\n Serial.println(ap_password);\n Serial.print(\"IP: \");\n Serial.println(WiFi.softAPIP()); // usually 192.168.4.1\n } else {\n Serial.println(\"AP start FAILED\");\n }\n\n // HTTP routes\n server.on(\"/\", handleRoot);\n server.on(\"/set\", handleSet);\n server.onNotFound(handleNotFound);\n\n server.begin();\n Serial.println(\"HTTP server started\");\n}\n\nvoid loop() {\n server.handleClient();\n}\n```\n\n---\n\n## 3. How to use it\n\n1. **Upload** this sketch (like before).\n2. Open **Serial Monitor** at **115200** to confirm:\n - “AP started”\n - IP address (usually `192.168.4.1`)\n3. On your **phone or laptop**:\n - Connect to WiFi **`ESP32-LED`**, password `12345678`\n - Open browser → `http://192.168.4.1/`\n4. Click the color buttons → NeoPixel changes color.\n5. To set arbitrary colors, use URL like: \n `http://192.168.4.1/set?r=0&g=255&b=50`\n\n---\n\nIf you’d rather have it join your **home WiFi** (instead of creating its own AP) so you can talk to it from your laptop on the same network, I can give a second version that takes your SSID/password and prints its IP.","role","assistant","name",{},"dd",{"_147":148,"_149":150},"disablePrefetch","shouldPrefetchAccount","shouldPrefetchUser","shouldPrefetchSystemHints","promoteCss","disableSSR","stripModulepreloadImports","statsigGateEvaluationsPromise",["P",146],"traceId","11861448990533508937","traceTime",1777339218002]

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PWM control with ESP32-S3