We had a few Halloween decorations with push button switches that we networked via an Arduino Uno. Three of the relays from the relay shield were used to activate a Grim Reaper and two sets of skulls. The push button from each decoration was cut and discarded. One of the wires coming from a decoration was connected to the common and the other to the normally open contact of a relay.
The Arduino sketch delivers a web based interface and parses incoming requests to evaluate which relay should be activated. The sketch is provided below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | #include <SPI.h>#include <EthernetV2_0.h>byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };IPAddress ip(192, 168, 0, 125);EthernetServer server(80);#define W5200_CS 10#define SDCARD_CS 4void setup() { Serial.begin(9600); pinMode(5, OUTPUT); pinMode(6, OUTPUT); pinMode(7, OUTPUT); digitalWrite(5, HIGH); digitalWrite(6, HIGH); digitalWrite(7, HIGH); delay(500); digitalWrite(5, LOW); digitalWrite(6, LOW); digitalWrite(7, LOW); pinMode(SDCARD_CS, OUTPUT); digitalWrite(SDCARD_CS, HIGH); Ethernet.begin(mac, ip); server.begin();}void loop() { EthernetClient client = server.available(); if (client) { boolean currentLineIsBlank = true; String req = ""; while (client.available()) { char c = client.read(); req += c; if (c == '\n') break; } if (client.connected()) { client.println("HTTP/1.1 200 OK"); client.println("Content-Type: text/html"); client.println("Connnection: close"); client.println(); client.println("<!DOCTYPE HTML>"); client.println("<html><head><meta name='viewport' content='width=device-width, initial-scale=1'><title>arduino</title><script src='https://code.jquery.com/jquery-2.1.4.min.js'></script></head><body><div id='container'>"); client.println("<style>"); client.println("#container { width:256px; }"); client.println(".button:hover { box-shadow:0 0 8px 0 rgba(0,0,0,0.5) inset; }"); client.println(".button { font-family:Arial; font-weight:bold; padding:8px 16px; margin:4px; border-radius:4px; border:1px solid #bbb; cursor:pointer; color:#fff; background: #579; }"); client.println("</style>"); client.println("<script>function send(val) { jQuery.get('/index.php', { pin:val}); }</script>"); client.println("<div class='button' onmousedown='stop(event);' onclick='stop(event);send(\"all\");'>All Decorations</div>"); client.println("<div class='button' onmousedown='stop(event);' onclick='stop(event);send(\"5\");'>Grim Reaper</div>"); client.println("<div class='button' onmousedown='stop(event);' onclick='stop(event);send(\"67\");'>Skulls</div>");// client.println("<div class='button' onmousedown='stop(event);' onclick='stop(event);send(\"7\");'>Skulls 2</div>"); client.println("</div></body></html>"); } delay(1); client.stop(); if (req.indexOf("pin=all") > -1) { digitalWrite(5, HIGH); digitalWrite(6, HIGH); digitalWrite(7, HIGH); delay(50); digitalWrite(5, LOW); digitalWrite(6, LOW); digitalWrite(7, LOW); } else if (req.indexOf("pin=5") > -1) { digitalWrite(5, HIGH); delay(50); digitalWrite(5, LOW); } else if (req.indexOf("pin=67") > -1) { digitalWrite(6, HIGH); digitalWrite(7, HIGH); delay(50); digitalWrite(6, LOW); digitalWrite(7, LOW); //} else if (req.indexOf("pin=7") > -1) { // digitalWrite(7, HIGH); // delay(50);// digitalWrite(7, LOW); } }} |
