本活動教你如何使用 ⭐線上免費工具 getBitmap V0.1⭐!
會使用一個 ESP32 + SSD1306 0.96" OLED 來做示範,
如果你手上也有的話, 也請先把線材 SDA, SCL, VCC, GND 接好,
大家一起跟著我, 一步一步的來把圖放到顯示器上.
大家好, 歡迎收看本週的Weekend project with Stonez56。
本周要進行的是 App Inventor 第10集 - 自己來寫 App - 骰子遊戲
這個影片適合稍進階同學來觀看&學習, 想要越級挑戰的朋也也歡迎拿來這個單元來學習 App Inventor 2!
這是一個學習任意組件的好範例, Android, iPad 都可以使用！
本次教學你可以學到:
* 本集會使用到:
* 感測器 (Sensor)
* 變數應用 (Variables)
* 清單的應用 (List)
* 圖片的應用 (Image)
* 為APP加上音音效 (Audio)
* 亂數的應用 (Randomized)
* 用任意組件 (Any component)
* 程序的應用 (Procedure)
參考資料:
App inventor 語法 & 使用方式: http://ai2.appinventor.mit.edu/reference/blocks/
音效來源: https://pixabay.com/
圖片製作: https://figma.com
如果你時間不夠, 也可以從以下的時間軸挑選想看的部份即可!
00:00 開始
00:24 骰子 App 示範
01:20 App 畫面的配置 / 素材上傳
04:39 App 程式設計
05:18 如何使用變數/變數種子
06:31 設定音效
11:54 如何使用任意元件
15:22 使用任意組件來移除重複的運算
16:26 把骰子元件放入清單中
23:11 使用任意組件 vs 未使用任意組件
* App Inventor #11自己來寫 App - 骰子遊戲 (Dice Game)
https://youtu.be/2d6Si6u8FVE
* App Inventor #10 集 自己來寫 APP YouBike 2.0 (下).
https://youtu.be/Cli-_lUPjgU
* App Inventor #9 集 - 自己來寫 APP YouBike 2.0 (上)
https://youtu.be/D78-eDRFiXM
*App Inventor #8 AI2 Companion 一直斷線怎麼辦? AI2 小技巧 (How to keep AI2 always connected for Android) https://youtu.be/_HeM9GyVmIE
* App Inventor #7 ESP32 語音辨識控制 IOT 專案, 使用 IoT Essential Library Example (CC available) https://youtu.be/senjdb-cREY
* App Inventor #6 使用’ 繪圖動畫' 製作使用者介面 (App Inventor 2 UI design with Draw and Animation) https://youtu.be/RfYi8h9y6kE
* App Inventor #5 - “無線搖控 ESP32-CAM APP 下集 (Write ESP32-CAM remote APP 2/2) https://youtu.be/J8b3zWX1FXM
* App Inventor #4 無線搖控 ESP32-CAM APP 上集 (Write ESP32-CAM remote APP 1/2)
https://youtu.be/x545mFSZWgg
* App Inventor #3 “自己來寫APP 快篩何處買?” (How to process .csv files in App Inventor)
https://youtu.be/u5J4FJQ5UQQ
* App Inventor #2 “自己來寫mqtt APP Android & iOS都能用” (Create MQTT Apps with App Inventor 2)
https://youtu.be/kIONEfLO4sI
* MIT App Inventor 2 #1 - 語音辨識 (Voice Recognition)
https://youtu.be/msV4V6af6tA
大家好, 歡迎收看本週的Weekend project with Stonez56。
本周要進行的是Arduino 第38集 - UBike 2.0 餘車通知器.
大多數坐捷運上下班的朋友, 一定有這樣的經驗:下班時,匆匆忙忙趕到捷運站,卻發現捷運站的Ubike已經都沒有了, 只好在那邊癡癡的等候.
如果下班之前, 看一下YouBike 2.0, 餘車通知器, 確定站點還有較多的Ubike, 這時候再過去牽車, 是不是很安心呢? 我們來看看怎麼做吧!
如果你時間不夠, 也可以從以下的時間軸挑選想看的部份即可!
00:00 開始
00:43 UBike 2.0 餘車通知器使用方法
03:22 Google Sheet 設定
14:44 Google Sheet 發佈API設定
17:19 Google Script doPost(e) 程式解釋
20:27 Google Script doGet(e) 程式解釋
21:46 ESP32 程式解釋
26:51 ESP32 refreshYouBike2data (更新SHEET資料)
28:52 ESP32 goGetData 由Sheet取得資料
30:03 showUTF8String 顯示餘車資料
* App Inventor #11自己來寫 App - 骰子遊戲 (Dice Game)
https://youtu.be/2d6Si6u8FVE
* App Inventor #10 集 自己來寫 APP YouBike 2.0 (下).
https://youtu.be/Cli-_lUPjgU
* App Inventor #9 集 - 自己來寫 APP YouBike 2.0 (上)
https://youtu.be/D78-eDRFiXM
*App Inventor #8 AI2 Companion 一直斷線怎麼辦? AI2 小技巧 (How to keep AI2 always connected for Android) https://youtu.be/_HeM9GyVmIE
* App Inventor #7 ESP32 語音辨識控制 IOT 專案, 使用 IoT Essential Library Example (CC available) https://youtu.be/senjdb-cREY
* App Inventor #6 使用’ 繪圖動畫' 製作使用者介面 (App Inventor 2 UI design with Draw and Animation) https://youtu.be/RfYi8h9y6kE
* App Inventor #5 - “無線搖控 ESP32-CAM APP 下集 (Write ESP32-CAM remote APP 2/2) https://youtu.be/J8b3zWX1FXM
* App Inventor #4 無線搖控 ESP32-CAM APP 上集 (Write ESP32-CAM remote APP 1/2)
https://youtu.be/x545mFSZWgg
* App Inventor #3 “自己來寫APP 快篩何處買?” (How to process .csv files in App Inventor)
https://youtu.be/u5J4FJQ5UQQ
* App Inventor #2 “自己來寫mqtt APP Android & iOS都能用” (Create MQTT Apps with App Inventor 2) https://youtu.be/kIONEfLO4sI
* MIT App Inventor 2 #1 - 語音辨識 (Voice Recognition)
https://youtu.be/msV4V6af6tA
大家好, 歡迎收看本週的Weekend project with Stonez56。
本周要進行的是 App Inventor 第10集 - 自己來寫 YouBike 2.0 APP (下集), 這個影片適合初學者來觀看學習, 想拿來這個單元來學習 App Inventor 2 也是很 Ok 的!
上集影片請點此: https://youtu.be/D78-eDRFiXM
對了,如果你沒有看過上一集, 請記得到右上角這邊, 按一下先觀看上集再來看下集. 那相信看過上一集的朋友都在等待這一集呢! 這個是一個專門為初學者來開發的一個系列, 所以會講的比較詳細, 相信各位只要仔細收看內容並進行實作, 一定會收獲滿滿滿。好, 那我們就開始吧今天的練習吧~
* 資料由政府資料開放平臺即時更新
* 美化使用者介面 (加入 Splash)
* 加入 App 開機畫面
* 移動 maker 更加順暢
* 打開 App 自動讀入 Json
* 取得手機所在位置定位
* 顯示附近 YouBike 車輛數目 (比對 YouBike 2.0 App 數量)
* 位置權限要授權給 MIT App Companion
* 若是下載為 APK, 位置權限要授權給 APK
* GPS 精準要打開
如果時間不夠的朋友, 也可以從以下的時間軸挑選想看的部份即可!
影片時間軸：
00:00 Start
00:37 本集可以學到什麼?
02:14 YouBike 2.0 App 示範
03:28 美化 YouBike 2.0 App
04:30 App 起始畫面 (Splash)
14:25 直讀政府公開YouBike資料
22:34 設定位置感測器(GPS)
35:17 顯示所有站點及每一站點車輛數
47:54 在我位置做標記
上集影片請點此: https://youtu.be/D78-eDRFiXM
App Inventor 相關教學影片:
* MIT App Inventor 2 #1 - 語音辨識 (Voice Recognition)
https://youtu.be/msV4V6af6tA
* App Inventor #2 “自己來寫mqtt APP Android & iOS都能用” (Create MQTT Apps with App Inventor 2)
https://youtu.be/kIONEfLO4sI
* App Inventor #3 “自己來寫APP 快篩何處買?” (How to process .csv files in App Inventor)
https://youtu.be/u5J4FJQ5UQQ
* App Inventor #4 無線搖控 ESP32-CAM APP 上集 (Write ESP32-CAM remote APP 1/2)
https://youtu.be/x545mFSZWgg
* App Inventor #5 - “無線搖控 ESP32-CAM APP 下集 (Write ESP32-CAM remote APP 2/2) https://youtu.be/J8b3zWX1FXM
* App Inventor #6 使用’ 繪圖動畫' 製作使用者介面 (App Inventor 2 UI design with Draw and Animation)
https://youtu.be/RfYi8h9y6kE
* App Inventor #7 ESP32 語音辨識控制 IOT 專案, 使用 IoT Essential Library Example (CC available) https://youtu.be/senjdb-cREY
*App Inventor #8 AI2 Companion 一直斷線怎麼辦? AI2 小技巧 (How to keep AI2 always connected for Android)
https://youtu.be/_HeM9GyVmIE
大家好, 歡迎收看本週的Weekend project with Stonez56。
本周要進行的是 App Inventor 第8集 - AI2 Companion 一直斷線怎麼辦?
在使用 App Inventor 時, 我比較喜歡是在手機上安裝 AI2 Companion 來測試 App 以確保App
的畫面設計與預期的相符合, 但是你是不是常常發生ai2 companion常常發生斷線的問題?
斷線後, 你必須在App inventor裡, 重新產生QR Code, 掃描, 等待ai2 companion再次連線,
真的是很麻煩呢! 本集我們就來在Android手機上做一些設定讓ai2 companion永遠連線, 這樣子以後就很方便喔!
也可以從以下的時間軸挑選想看的部份即可!
00:00 開始
00:54 為什麼 AI2 會斷線?
01:31 Android 手機設定打開發人員選項
02:12 在版本號碼上點7次
03:04 打開螢幕不休眠選項
大家好, 歡迎收看本週的Weekend project with Stonez56。
本周要進行的是 App Inventor 第7集 - 語音控制ESP32 - IOT 專案必備程式庫範例
本週要來示範如何設計App inventor 2 語音控制 APP, 只要加上我之前介紹的IoT專用必備程式庫, (請參考下方的#27連結), 為了讓初學者更好上手, 本次採用沒有放入MQTT的程式庫, 讓範例更簡單一點. 我們先來看一下實際的操作影片. https://www.youtube.com/watch?v=senjdb-cREY&t=40s
整個範例做完,你就可以以語音來控制遠端的 ESP32 了. 本次範例, 除了可以控制ESP32上的LED開 & 關, 也可以控制伺服馬達的開 & 關, 這集也加上了多語功能的控制, 中文和英文都可以喔. 範例中也設定了法文, 西班牙文, 和日文,有興趣的朋友可以自行加上這些語言的控制程式碼.
#27 AsyncWifimanager ElegantOTA ESP32 (WiFi 密碼管理+ WiFi 韌體更新)
https://stonez56.blogspot.com/2021/07/asyncwifimanager-elegantota-esp32-wifi.html
請先到上方的連結, copy 所有的程式嗎, 再複製到 Arduino 編輯程式中存檔.
也要記得把 esp32_servo.h 檔案給儲存下來.
好, 那我們就開始吧今天的練習吧~
#include "esp32_servo.h" //------->
#define myLED 2 //------->
#include <AsyncElegantOTA.h>
const char *FOTA_USERNAME = "un";
const char *FOTA_PASSWORD = "pw";
/****************************************************************************************************************************
Async_AutoConnect_ESP32_minimal.ino
For ESP8266 / ESP32 boards
Built by Khoi Hoang https://github.com/khoih-prog/ESPAsync_WiFiManager
Licensed under MIT license
*****************************************************************************************************************************/
#if !(defined(ESP32))
#error This code is intended to run on the ESP32 platform! Please check your Tools->Board setting.
#endif
#include <ESPAsync_WiFiManager.h> //https://github.com/khoih-prog/ESPAsync_WiFiManager
AsyncWebServer webServer(80);
#define DEVICE_NAME "VoiceCommandESP32" //------->
DNSServer dnsServer;
void setup()
{
pinMode(myLED, OUTPUT); //------->
servo_setup(); //------->
// put your setup code here, to run once:
Serial.begin(115200);
while (!Serial)
;
delay(200);
Serial.println("\nStarting Async_AutoConnect_ESP32_minimal on " + String(ARDUINO_BOARD));
Serial.println(ESP_ASYNC_WIFIMANAGER_VERSION);
ESPAsync_WiFiManager ESPAsync_wifiManager(&webServer, &dnsServer, DEVICE_NAME); //------->
//ESPAsync_wifiManager.resetSettings(); //reset saved settings
//ESPAsync_wifiManager.setAPStaticIPConfig(IPAddress(192, 168, 132, 1), IPAddress(192, 168, 132, 1), IPAddress(255, 255, 255, 0));
ESPAsync_wifiManager.autoConnect();
if (WiFi.status() == WL_CONNECTED)
{
Serial.print(DEVICE_NAME); //------->
Serial.print(F(" Connected. Local IP: "));
Serial.println(WiFi.localIP());
}
else
{
Serial.println(ESPAsync_wifiManager.getStatus(WiFi.status()));
}
webServer.on("/", HTTP_GET, [](AsyncWebServerRequest *request)
{ request->send(200, "text/plain", "Hi! I am ESP32S. access to URL /update to update firmware"); }); //------->
webServer.onNotFound([](AsyncWebServerRequest *request)
{ request->send(404, "text/plain", "Page not found!"); }); //------->
// move the motors //-------> NEW ADDITION Codes
webServer.on("/go", HTTP_GET, [](AsyncWebServerRequest *request)
{
String motor = "";
String rotation = "";
// Get input value from URL/go?motor=msg1&rotation=msg2
if(request->hasParam("motor") && request->hasParam("rotation")){
if(request->hasParam("motor")){
AsyncWebParameter* p = request->getParam("motor");
Serial.print(p->name().c_str());
Serial.println(p->value().c_str());
motor = p->value();
}
if(request->hasParam("rotation")){
AsyncWebParameter* p = request->getParam("rotation");
Serial.print(p->name().c_str());
Serial.println(p->value().c_str());
rotation = p->value();
}
if(rotation == "0"){
digitalWrite(myLED, LOW);
}else if(rotation == "1"){
digitalWrite(myLED, HIGH);
}else{
servo_spin(rotation.toInt());
}
request->send(200, "text/plain", "Command executed!");
}else{
request->send(200, "text/plain", "Error command!");
Serial.println("Error commands!");
}
});
//AsyncElegantOTA.begin(&webServer); // Start ElegantOTA WITHOUT username & password
AsyncElegantOTA.begin(&webServer, FOTA_USERNAME, FOTA_PASSWORD); // Start ElegantOTA with username & password
webServer.begin();
Serial.println("HTTP server started");
}
void loop() {
}
// ESP32Servo by John K. Bennett,autoConnectKevin Harrington Version 0.11.0
// https://github.com/jkb-git/ESP32Servo/blob/master/src/ESP32_Servo.h
#include <analogWrite.h>
#include <ESP32PWM.h>
#include <ESP32Servo.h>
#include <ESP32Tone.h>
/** Define SERVO pins **/
#define SERVO_PIN2 13 //
Servo SERVO_LR; //left right
const int MAX_ANGLE = 170; //keep servo at minimum range
const int MIN_ANGLE = 10;
int SERVO_LR_POS = 90;
void servo_setup()
{
SERVO_LR.setPeriodHertz(50); // standard 50 hz servo
// http://yehnan.blogspot.com/2013/09/arduinotower-pro-sg90.html
SERVO_LR.attach(SERVO_PIN2, 500, 2400);
//init position 90 degree for LR & UD
SERVO_LR.write(SERVO_LR_POS);
}
void servo_spin(int angle){
// motor protection
if(angle > MAX_ANGLE) angle = MAX_ANGLE;
if(angle < MIN_ANGLE) angle = MIN_ANGLE;
SERVO_LR.write(angle);
}
Hi, Welcome to weekend project with Stonez56
This week's Arduino episode #37, "Essential IoT Code Base- Wifimanager FOTA + MQTT"
Here is the source code: https://stonez56.blogspot.com/2022/08/android-36-iot-wifimanager-fota-mqtt.html
Today, I will show how to combine three commonly used IoT libraries;
WiFimanager, AsyncElegantOTA, and MQTT To become a common IoT code base. So, for our future projects, ESP8266 or ESP32, would have these basic functions.
Let's first look at these three libraries:
This episode will only introduce how to integrate MQTT into Wifimanager + AsyncElegantFOTA.
To learn how to start Wifimanager + AsyncElegantOTA, Please watch Android #27 Wifimanager + OTA for ESP32/ESP8266 (ESPAsyncWifimanager / ESPAsyncElegantOTA)) https://youtu.be/UlRLTvl4DRc
==References==
Arduino Library URL:
==Sample code URL==
ESPAsync_WiFiManager minimal: https://github.com/khoih-prog/ESPAsync_WiFiManager/blob/master/examples/Async_AutoConnect_ESP32_minimal/Async_AutoConnect_ESP32_minimal.ino
ESP32 Async OTA : https://github.com/ayushsharma82/AsyncElegantOTA/blob/master/examples/ESP32_Async_Demo/ESP32_Async_Demo.ino
If you don't have enough time, you can also select the part you want to watch from the timeline below!
Video Timeline: 00:00 Start 01:39 Demonstration of project results 01:57 mqttgo.io MQTT server, free, fast, & stable 05:52 Install three libraries 07:14 Added two ESP32 PINs as MQTT example 07:41 Encrypt the firmware update (ElegantOTA) page 11:44 Explain how the MQTT callback function works 13:07 Control ESP32 I/O pins with MQTT 15:16 Future program can be written from here
=====中文版本======
大家好, 歡迎收看本週的Weekend project with Stonez56。
本周要進行的是 Arduino 第36集，"IoT 基本程式庫 - Wifimanager FOTA + MQTT”
今天來跟大家介紹如何把 一般的 IoT 專案常用到的三個程式庫, WiFiManager 以及WiFi 韌體更新FOTA (Firmware Over the Air), 再加上 MQTT 三個整合在一起, 變成一個常用的 Code base. 往後你的 ESP32 IoT 專案呢, 就可以俱備這些基本功能了!
本集僅會介紹如何把 MQTT 整合到 Wifimanager + AsyncElegantFOTA
若想了解如何整合 Wifimanager + AsyncElegantOTA,
請觀看 Arduino #26 AsyncWifimanager ElegantOTA ESP32 (WiFi 密碼管理+ WiFi 韌體更新) https://youtu.be/zepkinJ46Zg
Arduino Library URL:
如果時間不夠的朋友, 也可以從以下的時間軸挑選想看的部份即可!
影片時間軸：
影片時間軸： 00:00 Start 01:39 專案成果示範 01:57 mqttgo.io 快速免費的 MQTT 伺服器 05:52 安裝三支程式庫 07:14 加入兩個 ESP32 PIN做為MQTT範例 07:41 為韌體更新(ElegantOTA)頁面加密 11:44 說明MQTT callback 函數運作方式 13:07 MQTT由此控制ESP32 PIN 15:16 把你的程式可以寫在這裡
/**
* Arduino code base for IoT Projects
* By: Stonez56 aka Kevin Chen 2022-08-16
*
* This source code combined three most common Arduino libraries for IoT Projects,
* ESPAsync_Wifimanager, AsyncElegantOTA, & Pubsubclient MQTT Client.
*
* 1. ESPAsync_WiFiManager: https://github.com/khoih-prog/ESPAsync_WiFiManager
* 2. AsyncElegantOTA: https://github.com/ayushsharma82/AsyncElegantOTA
* 3. Pubsubclient MQTT Client: https://github.com/knolleary/pubsubclient
*
* YouTube video: https://youtu.be/giFHp9RSMvQ
* Source code is available my blog: https://stonez56.blogspot.com/2022/08/android-36-iot-wifimanager-fota-mqtt.html
**/
/*
* Define Relay pins as examples to send/receive MQTT messages
* **/
#define RELAY_PIN_1 12
#define RELAY_PIN_2 14
/**
* Perform OTAs for ESP8266 / ESP32 Elegantly with password protection!
* https://github.com/ayushsharma82/AsyncElegantOTA
* **/
#include <AsyncElegantOTA.h>
const char *FOTA_USERNAME = "un";
const char *FOTA_PASSWORD = "pw";
/**
* Add MQTT client here` PubSubClient V2.8 by Nick O'Leary
* https://github.com/knolleary/pubsubclient
*/
#include <WiFiClient.h>
#include <PubSubClient.h>
#define MSG_BUFFER_SIZE (1024)
char msg[MSG_BUFFER_SIZE];
/** Taiwan No. 1 Free MQTT Server!! **/
const char *mqtt_server = "mqttgo.io";
const int mqtt_port = 1883;
/****************************************************************************************************************************
Async_AutoConnect_ESP32_minimal.ino
For ESP8266 / ESP32 boards
Built by Khoi Hoang https://github.com/khoih-prog/ESPAsync_WiFiManager
Licensed under MIT license
*****************************************************************************************************************************/
#if !(defined(ESP32))
#error This code is intended to run on the ESP32 platform! Please check your Tools->Board setting.
#endif
#include <ESPAsync_WiFiManager.h>
AsyncWebServer webServer(80);
//Start DNS server
DNSServer dnsServer;
//MQTT - Start WiFi client and connect to MQTT server
WiFiClient espClient;
PubSubClient mqtt_client(espClient);
//Define device name
String DEVICE_NAME = "Dual_Relay_Switch";
String home_page_message = "";
void setup()
{
Serial.begin(115200);
pinMode(RELAY_PIN_1, OUTPUT);
pinMode(RELAY_PIN_2, OUTPUT);
while (!Serial)
;
delay(200);
Serial.print("\nAsyncWifimanager started on " + String(ARDUINO_BOARD) + "\n");
//Initialize ESPAsyncWifimanager instance and assign Wi-Fi Client name "AsyncAutoConnect"!
//This name and IP address can be checked from the router
ESPAsync_WiFiManager ESPAsync_wifiManager(&webServer, &dnsServer, "Dual_Relay_Switch");
//####### RESET SAVED WIFI SETTINGS #############
//ESPAsync_wifiManager.resetSettings();
//ESPAsync_wifiManager.setAPStaticIPConfig(IPAddress(192, 168, 132, 1), IPAddress(192, 168, 132, 1), IPAddress(255, 255, 255, 0));
//ESPAsync_wifiManager.autoConnect("Stonez_ESP32S", "AP-NAME", "AP-PASSWORD");
ESPAsync_wifiManager.autoConnect("Dual_Switch_ESP32S");
if (WiFi.status() == WL_CONNECTED)
{
Serial.print(DEVICE_NAME);
Serial.print(" is on Local IP: ");
Serial.println(WiFi.localIP());
}
else
{
Serial.println(ESPAsync_wifiManager.getStatus(WiFi.status()));
}
//Setup home page access content when visite
home_page_message = "<!DOCTYPE html><html><head><title>" + DEVICE_NAME
+ "</title></head><body><p><h2> Hi! This is " + DEVICE_NAME + "</h2>"
+ "To update firmware, <a href='/update'>Click here!!</a><br/><span>Username & Password required!</span></p><body></html>";
webServer.on("/", HTTP_GET, [](AsyncWebServerRequest *request)
{ request->send(200, "text/html", home_page_message); });
//AsyncElegantOTA.begin(&webServer); // Start ElegantOTA WITHOUT username & password
AsyncElegantOTA.begin(&webServer, FOTA_USERNAME, FOTA_PASSWORD); // Start ElegantOTA with username & password
webServer.begin();
Serial.println("AsyncElegantOTA server started @URL/update");
//MQTT starts here!
mqtt_client.setServer(mqtt_server, mqtt_port);
mqtt_client.setCallback(callback);
}
/**
//When MQTT lost connection, this function will be called to reconnect MQTT//
* Modified to accept multiple MQTT topics
* https://www.baldengineer.com/multiple-mqtt-topics-pubsubclient.html
*/
void callback(char *topic, byte *payload, unsigned int length)
{
//Print message received
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < length; i++)
{
Serial.print((char)payload[i]);
}
Serial.println();
//Process multiple topics here//
payload[length] = '\0';
String message = (char*)payload;
if (strcmp(topic, "studio/humd_switch") == 0)
{
if(message == "true"){
digitalWrite(RELAY_PIN_1, HIGH);
Serial.println("humd_switch true");
}
if(message == "false"){
digitalWrite(RELAY_PIN_1, LOW);
Serial.println("humd_switch false");
}
}
if (strcmp(topic, "studio/humd_switch2") == 0)
{
if(message == "true"){
digitalWrite(RELAY_PIN_2, HIGH);
Serial.println("humd_switch2 true");
}
if(message == "false"){
digitalWrite(RELAY_PIN_2, LOW);
Serial.println("humd_switch2 false");
}
}
}
//============= MQTT ===================
//When MQTT lost connection, this function will be called to reconnect MQTT//
void reconnect(){
//Loop while MQTT connected
while (!mqtt_client.connected())
{
Serial.print("Attempting MQTT connection... ");
// Create a random client ID
String clientId = "Stonez_ESP32Client-";
clientId += String(random(0xffff), HEX);
// Attempt to connect
if (mqtt_client.connect(clientId.c_str()))
{
Serial.print("connected to ");
Serial.print(mqtt_server);
// Once connected, publish an announcement...
mqtt_client.publish("outTopic", "Hello world");
// ... and resubscribe
mqtt_client.subscribe("studio/humd_switch");
mqtt_client.subscribe("studio/humd_switch2");
}
else
{
Serial.print("failed, rc=");
Serial.print(mqtt_client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void loop() {
//============= MQTT ===================
//if can't connect to MQTT server, then re-connect
if (!mqtt_client.connected())
{ reconnect(); }
//constantly check MQTT to see for messages sending/receiving
mqtt_client.loop();
/**
* Write your own code here....
*
*/
}
/****************************************************************************************************************************
Async_AutoConnect_ESP32_minimal.ino
For ESP8266 / ESP32 boards
Built by Khoi Hoang https://github.com/khoih-prog/ESPAsync_WiFiManager
Licensed under MIT license
*****************************************************************************************************************************/
#if !(defined(ESP32) )
#error This code is intended to run on the ESP32 platform! Please check your Tools->Board setting.
#endif
#include <ESPAsync_WiFiManager.h> //https://github.com/khoih-prog/ESPAsync_WiFiManager
AsyncWebServer webServer(80);
DNSServer dnsServer;
void setup()
{
// put your setup code here, to run once:
Serial.begin(115200); while (!Serial); delay(200);
Serial.print("\nStarting Async_AutoConnect_ESP32_minimal on " + String(ARDUINO_BOARD)); Serial.println(ESP_ASYNC_WIFIMANAGER_VERSION);
ESPAsync_WiFiManager ESPAsync_wifiManager(&webServer, &dnsServer, "AutoConnectAP");
//ESPAsync_wifiManager.resetSettings(); //reset saved settings
ESPAsync_wifiManager.setAPStaticIPConfig(IPAddress(192,168,132,1), IPAddress(192,168,132,1), IPAddress(255,255,255,0));
ESPAsync_wifiManager.autoConnect("AutoConnectAP");
if (WiFi.status() == WL_CONNECTED) { Serial.print(F("Connected. Local IP: ")); Serial.println(WiFi.localIP()); }
else { Serial.println(ESPAsync_wifiManager.getStatus(WiFi.status())); }
}
void loop() { }
/****************************************************************************************************************************
Async_AutoConnect_ESP8266_minimal.ino
For ESP8266 / ESP32 boards
Built by Khoi Hoang https://github.com/khoih-prog/ESPAsync_WiFiManager
Licensed under MIT license
*****************************************************************************************************************************/
#if !( defined(ESP8266) )
#error This code is intended to run on ESP8266 platform! Please check your Tools->Board setting.
#endif
#include <ESPAsync_WiFiManager.h> //https://github.com/khoih-prog/ESPAsync_WiFiManager
AsyncWebServer webServer(80);
DNSServer dnsServer;
void setup()
{
// put your setup code here, to run once:
Serial.begin(115200); while (!Serial); delay(200);
Serial.print("\nStarting Async_AutoConnect_ESP8266_minimal on " + String(ARDUINO_BOARD)); Serial.println(ESP_ASYNC_WIFIMANAGER_VERSION);
ESPAsync_WiFiManager ESPAsync_wifiManager(&webServer, &dnsServer, "AutoConnectAP");
//ESPAsync_wifiManager.resetSettings(); //reset saved settings
//ESPAsync_wifiManager.setAPStaticIPConfig(IPAddress(192,168,186,1), IPAddress(192,168,186,1), IPAddress(255,255,255,0));
ESPAsync_wifiManager.autoConnect("AutoConnectAP");
if (WiFi.status() == WL_CONNECTED) { Serial.print(F("Connected. Local IP: ")); Serial.println(WiFi.localIP()); }
else { Serial.println(ESPAsync_wifiManager.getStatus(WiFi.status())); }
}
void loop() { }
Android #34 用一塊ESP32來學IOT - Android手機也能通 Learn IOT with an ESP32 / remote control w/ MQTTDash
** ENGLISH closed captions is now available for this video ** Learn IOT with an ESP32 / remote control w/ MQTTDash APPVideo timeline:
00:58 Download MQTTDash App 01:29 Create an MQTT connection 03:20 Dashboard Design 04:17 Review subscriptions on MQTTLens 05:15 Enter subscription topics in MQTTDash 10:30 See the Demo on the phone 12:39 Modify ESP32 code accordingly 大家好, 歡迎收看本週的Weekend project with Stonez56。 本周是Android 第34集，"用一塊ESP32來學IOT - Android 手機也能通”。這個是一個專門為初學者來開發的一個系列。 繼上集之後, 有網友反應無法在手機上用 MQTTlens. 所以我們今天要把只能在電腦上使用的 MQTTLens 改成 MQTTDash 這支Android APP. 這樣子, 只要帶著手機, 我們就可真正隨時隨地的遠端控制IOT設備了~ 那我們就一起來學習吧。 Android MQTTDash App: https://play.google.com/store/apps/details?id=net.routix.mqttdash&hl=zh_TW&gl=US&showAllReviews=true 尚未看過這系列的朋友, 建議從這裡依序學習: * 用一塊ESP32來學 IOT https://youtu.be/rjPU4YZG338 * 溫溼度篇 https://youtu.be/x3k_dZXua1I * Android App 也能通 https://youtu.be/0IjQOxD2j48 如果時間不夠的朋友, 也可以從以下的時間軸挑選想看的部份即可! 影片時間軸： 00:00 開始 00:58 下載 MQTTDash APP 01:29 建立 EMQX MQTT 連線 03:20 儀表板設計 04:17 查看之前 MQTTLens 上的訂閱/發佈主題 05:15 在 MQTTDash 中加入訂閱/發佈主題 10:30 看實際手機+ESP32 展示 12:39 如何修改 ESP32 相應代碼
/*
Basic ESP8266 MQTT example
This sketch demonstrates the capabilities of the pubsub library in combination
with the ESP8266 board/library.
It connects to an MQTT server then:
- publishes "hello world" to the topic "outTopic" every two seconds
- subscribes to the topic "inTopic", printing out any messages
it receives. NB - it assumes the received payloads are strings not binary
- If the first character of the topic "inTopic" is an 1, switch ON the ESP Led,
else switch it off
It will reconnect to the server if the connection is lost using a blocking
reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to
achieve the same result without blocking the main loop.
To install the ESP8266 board, (using Arduino 1.6.4+):
- Add the following 3rd party board manager under "File -> Preferences -> Additional Boards Manager URLs":
http://arduino.esp8266.com/stable/package_esp8266com_index.json
- Open the "Tools -> Board -> Board Manager" and click install for the ESP8266"
- Select your ESP8266 in "Tools -> Board"
*/
#include <WiFi.h>
#include <PubSubClient.h>
#include <EasyButton.h>
#define LED 2 //built-in LED on ESP32
#include "DHT.h"
#define DHTPIN 23 // Digital pin connected to the DHT sensor
#define DHTTYPE DHT11 // DHT11
DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor.
// Set up the temp / humidity update cycle
const int updateCycle = 5000;
// Update these with values suitable for your network.
const char *ssid = "Wi-Fi SSID";
const char *password = "Wi-Fi Password";
// Define your client ID on EMQX
String mqtt_ClientID = "stonez56_IOT_Station_";
// Define your topics to subscribe / publish
const char* sub_topic = "stonez56/esp32s";
const char* pub_led_topic = "stonez56/esp32s_led_state";
const char* pub_init_topic = "stonez56/esp32s_is_back";
const char* pub_temp_topic = "stonez56/esp32s_temp";
const char* pub_humd_topic = "stonez56/esp32s_humd";
// EMQX broker parameters
const char *mqtt_server = "broker.emqx.io";
const char *mqtt_userName = "emqx";
const char *mqtt_password = "public";
WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;
#define MSG_BUFFER_SIZE (50)
char msg[MSG_BUFFER_SIZE];
char msg1[MSG_BUFFER_SIZE];
int value = 0;
void setup_wifi()
{
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
randomSeed(micros());
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void callback(char *topic, byte *payload, unsigned int length)
{
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < length; i++)
{
Serial.print((char)payload[i]);
}
Serial.println();
payload[length] = '\0';
String message = (char *)payload;
if (strcmp(topic, sub_topic) == 0)
{
if (message == "off")
{
digitalWrite(LED, LOW); //Turn off
client.publish(pub_led_topic, "off");
}
if (message == "on")
{
digitalWrite(LED, HIGH); //Turn on
client.publish(pub_led_topic, "on");
}
}
/* Switch on the LED if an 1 was received as first character
// if ((char)payload[0] == '1')
// {
// digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that LOW is the voltage level
// // but actually the LED is on; this is because
// // it is active low on the ESP-01)
// }
// else
// {
// digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off by making the voltage HIGH
// } */
}
void reconnect()
{
// Loop until we're reconnected
while (!client.connected())
{
Serial.println("Attempting EMQX MQTT connection...");
// Create a random client ID
mqtt_ClientID += String(random(0xffff), HEX);
// Attempt to connect
if (client.connect((mqtt_ClientID, mqtt_userName, mqtt_password)))
{
Serial.print(" connected with Client ID: ");
Serial.println(mqtt_ClientID);
// Once connected, publish an announcement...
client.publish(pub_init_topic, "Hi, I'm online!");
// ... and resubscribe
client.subscribe(sub_topic);
}
else
{
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void setup()
{
//Start DH11 sensor
dht.begin();
pinMode(LED, OUTPUT); // Initialize the _LED pin as an output
digitalWrite(LED, LOW); //default ESP32 LOW is turn off
Serial.begin(115200);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
}
void loop()
{
if (!client.connected())
{
reconnect();
}
client.loop();
unsigned long now = millis();
if (now - lastMsg > updateCycle)
{
lastMsg = now;
float humidity = dht.readHumidity();
float temperature = dht.readTemperature();
// Check if any reads failed and exit early (to try again).
if (isnan(humidity) || isnan(temperature))
{
Serial.println(F("Failed to read from DHT sensor!"));
return;
}else{ // publish the message
snprintf(msg, MSG_BUFFER_SIZE, "%.1lf°", temperature);
snprintf(msg1, MSG_BUFFER_SIZE,"%.0lf%%", humidity);
Serial.print("Publish message: ");
Serial.println(msg);
client.publish(pub_temp_topic, msg);
client.publish(pub_humd_topic, msg1);
}
}
}
;
大家好, 今天和大家來分享, Arduino #32 用一塊ESP32來學 IOT (#32 Learn IOT with MQTT + ESP32) 這個影片很適合初學者來觀看學習. 影片內容主要是告訴大家, 只要手上有一塊 ESP32 和一台電腦, 就可以開始學習 IOT 了 ! 看過這個影片, 你會了解學習 IOT 一點都不難喔! 甚至可以延伸作法, 利用 MQTTlens 透過雲端EMQX來做遠端的控制!
/*
Basic ESP8266 MQTT example
This sketch demonstrates the capabilities of the pubsub library in combination
with the ESP8266 board/library.
It connects to an MQTT server then:
- publishes "hello world" to the topic "outTopic" every two seconds
- subscribes to the topic "inTopic", printing out any messages
it receives. NB - it assumes the received payloads are strings not binary
- If the first character of the topic "inTopic" is an 1, switch ON the ESP Led,
else switch it off
It will reconnect to the server if the connection is lost using a blocking
reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to
achieve the same result without blocking the main loop.
To install the ESP8266 board, (using Arduino 1.6.4+):
- Add the following 3rd party board manager under "File -> Preferences -> Additional Boards Manager URLs":
http://arduino.esp8266.com/stable/package_esp8266com_index.json
- Open the "Tools -> Board -> Board Manager" and click install for the ESP8266"
- Select your ESP8266 in "Tools -> Board"
*/
#include <WiFi.h>
#include <PubSubClient.h>
#include <EasyButton.h>
#define LED 2 //built-in LED on ESP32
// Update these with values suitable for your network.
const char *ssid = "WiFi-SSID";
const char *password = "WiFi-PASSWORD";
// Define your client ID on EMQX
String mqtt_ClientID = "stonez56_IOT_Station_";
// Define your topics to subscribe / publish
const char* sub_topic = "stonez56/esp32s";
const char* pub_led_topic = "stonez56/esp32s_led_state";
const char* pub_init_topic = "stonez56/esp32s_is_back";
// EMQX broker parameters
const char *mqtt_server = "broker.emqx.io";
const char *mqtt_userName = "emqx";
const char *mqtt_password = "public";
WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;
#define MSG_BUFFER_SIZE (50)
char msg[MSG_BUFFER_SIZE];
int value = 0;
void setup_wifi()
{
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
randomSeed(micros());
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void callback(char *topic, byte *payload, unsigned int length)
{
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < length; i++)
{
Serial.print((char)payload[i]);
}
Serial.println();
payload[length] = '\0';
String message = (char *)payload;
if (strcmp(topic, sub_topic) == 0)
{
if (message == "off")
{
digitalWrite(LED, LOW); //Turn off
client.publish(pub_led_topic, "off");
}
if (message == "on")
{
digitalWrite(LED, HIGH); //Turn on
client.publish(pub_led_topic, "on");
}
}
/* Switch on the LED if an 1 was received as first character
// if ((char)payload[0] == '1')
// {
// digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that LOW is the voltage level
// // but actually the LED is on; this is because
// // it is active low on the ESP-01)
// }
// else
// {
// digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off by making the voltage HIGH
// } */
}
void reconnect()
{
// Loop until we're reconnected
while (!client.connected())
{
Serial.println("Attempting EMQX MQTT connection...");
// Create a random client ID
mqtt_ClientID += String(random(0xffff), HEX);
// Attempt to connect
if (client.connect((mqtt_ClientID, mqtt_userName, mqtt_password)))
{
Serial.print(" connected with Client ID: ");
Serial.println(mqtt_ClientID);
// Once connected, publish an announcement...
client.publish(pub_init_topic, "Hi, I'm online!");
// ... and resubscribe
client.subscribe(sub_topic);
}
else
{
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void setup()
{
pinMode(LED, OUTPUT); // Initialize the _LED pin as an output
digitalWrite(LED, LOW); //default ESP32 LOW is turn off
Serial.begin(115200);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
}
void loop()
{
if (!client.connected())
{
reconnect();
}
client.loop();
/* unsigned long now = millis();
// if (now - lastMsg > 2000)
// {
// lastMsg = now;
// ++value;
// snprintf(msg, MSG_BUFFER_SIZE, "hello world #%ld", value);
// Serial.print("Publish message: ");
// Serial.println(msg);
// client.publish("stonez56/esp32s_button_pushed", msg);
// } */
}