{"id":3183,"date":"2020-12-29T19:18:09","date_gmt":"2020-12-29T17:18:09","guid":{"rendered":"https:\/\/www.robinglauser.ch\/blog\/?p=3183"},"modified":"2020-12-29T19:19:59","modified_gmt":"2020-12-29T17:19:59","slug":"building-a-joke-machine-with-an-esp8266","status":"publish","type":"post","link":"https:\/\/www.robinglauser.ch\/blog\/2020\/12\/29\/building-a-joke-machine-with-an-esp8266\/","title":{"rendered":"Building a joke machine with an ESP8266"},"content":{"rendered":"\n

I had a few ESP8266’s lying around and some OLED Displays and wanted to do a project with them. So, I decided to put a joke API (http:\/\/official-joke-api.appspot.com) I discovered earlier to use. <\/p>\n\n\n\n

Wire up your display to the ESP8266 according to the following schematics:<\/p>\n\n\n\n

\"ESP8266<\/a>
https:\/\/randomnerdtutorials.com\/esp8266-0-96-inch-oled-display-with-arduino-ide\/<\/a><\/figcaption><\/figure>\n\n\n\n

Then add the following code to your ESP8266 with the Arduino Application. You need to edit in the Wireless SSID and Password on line 4 and 5. <\/p>\n\n\n

\n#include <ESP8266WiFi.h>\n#include <ESP8266HTTPClient.h>\n\nconst char* ssid = "Wifi SSID";\nconst char* password =  "Wifi Password";\n\n#include <Wire.h>\n#include <Adafruit_GFX.h>\n#include <Adafruit_SSD1306.h>\n#include <ArduinoJson.h>\n\n#define SCREEN_WIDTH 128 \/\/ OLED display width, in pixels\n#define SCREEN_HEIGHT 64 \/\/ OLED display height, in pixels\n\n\/\/ Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)\nAdafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);\n\n\nvoid setup () {\n\n  Serial.begin(115200);\n\n  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { \/\/ Address 0x3D for 128x64\n    Serial.println(F("SSD1306 allocation failed"));\n    for (;;);\n  }\n\n  display.clearDisplay();\n  display.setTextSize(1);\n  display.setTextColor(WHITE);\n  display.setCursor(0, 10);\n  \/\/ Display static text\n  display.println("Waiting for Joke");\n\n  WiFi.begin(ssid, password);\n\n  while (WiFi.status() != WL_CONNECTED) {\n\n    delay(1000);\n    Serial.println("Connecting..");\n\n  }\n\n  Serial.println('\\n');\n  Serial.print("Connected to ");\n  Serial.println(WiFi.SSID());              \/\/ Tell us what network we're connected to\n  Serial.print("IP address:\\t");\n  Serial.println(WiFi.localIP());\n\n}\n\nvoid loop() {\n  Serial.println("Loop");\n\n  if (WiFi.status() == WL_CONNECTED) { \/\/Check WiFi connection status\n\n    HTTPClient http;  \/\/Declare an object of class HTTPClient\n\n    http.begin("http:\/\/official-joke-api.appspot.com\/random_joke");  \/\/Specify request destination\n    int httpCode = http.GET();                                  \/\/Send the request\n\n    if (httpCode > 0) { \/\/Check the returning code\n\n      String payload = http.getString();   \/\/Get the request response payload\n      Serial.println(payload);\n\n      DynamicJsonDocument doc(2048);\n      deserializeJson(doc, payload);\n\n      const char* joke = doc["setup"];\n      const char* punchline = doc["punchline"];\n      Serial.println(joke);\n\n      display.clearDisplay();\n\n      display.setCursor(0, 10);\n      \/\/ Display static text\n      display.println(joke);\n      display.display();\n      delay(4000);\n      display.clearDisplay();\n\n      display.setCursor(0, 10);\n      \/\/ Display static text\n      display.println(punchline);\n      display.display();\n\n    }\n\n    http.end();   \/\/Close connection\n\n  }\n\n  delay(6000);    \/\/Send a request every 30 seconds\n}\n<\/pre><\/div>\n\n\n
Also, the following Libraries need to be installed via the Library Manager in the Arduino Software. (under Tools, Library Manager)<\/p>\n\n\n\n
ArduinoJson, Adafruit_SSD1306, Adafruit-GFX-Library<\/p>\n\n\n\n
Also, you need to add the URL “http:\/\/arduino.esp8266.com\/stable\/package_esp8266com_index.json” in the preferences and install esp8266 platform (Open Boards Manager from Tools > Board menu).<\/p>\n\n\n\n
Don’t forget to select the ESP8266 board from Tools > Board menu after the installation.<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
And voil\u00e0, your joke machine should be finished and will be showing first a setup and then a few seconds later the punchline.<\/p>\n\n\n\n
\"\"\/<\/figure>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
I had a few ESP8266’s lying around and some OLED Displays and wanted to do a project with them. So, I decided to put a joke API (http:\/\/official-joke-api.appspot.com) I discovered earlier to use. Wire up your display to the ESP8266 according to the following schematics: Then add the following code to your ESP8266 with the Arduino Application. You need to … Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":3185,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[45],"tags":[],"class_list":["post-3183","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-development"],"yoast_head":"\nBuilding a joke machine with an ESP8266 - Robin Glauser<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.robinglauser.ch\/blog\/2020\/12\/29\/building-a-joke-machine-with-an-esp8266\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Building a joke machine with an ESP8266 - Robin Glauser\" \/>\n<meta property=\"og:description\" content=\"I had a few ESP8266’s lying around and some OLED Displays and wanted to do a project with them. 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