Introduction
The problem that most of us face when dealing with the conventional wall clock is, the time will start shifting after it runs for a certain period of time. When that happens, you will start to refer to your smartphone clock to get the exact time. So in this tutorial, I will share with you how to create a dot matrix clock and get time from the NTP server using the ESP32 board.
Video
This video will show you how to create dot matrix clock and get time and date from NTP (Network Time Protocol) server using ESP32 board.
Hardware Preparation
This is the list of items used in the video.
Sample Program
This is a sample program to get time from the NTP server and display clock at the dot matrix. Before that, you need to install 3 libraries:
- MD_MAX72XX by majicDesigns Version 3.2.1 (Library Manager)
- MD_Parola by majicDesigns Version 3.3.0 (Library Manager)
- NTPClient by Fabrice Weinberg Version 3.1.0 (ZIP file)
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| /* | |
| Project: Dot matrix clock with NTP server using ESP32 | |
| Board: ESP32 Dev Module (Node32 Lite) | |
| Connections: | |
| ESP32 | Dot Matrix | |
| RAW – VCC | |
| GND – GND | |
| 27 – DIN | |
| 26 – CS | |
| 25 – CLK | |
| External libraries: | |
| – MD_MAX72XX by majicDesigns Version 3.2.1 (Manager) | |
| – MD_Parola by majicDesigns Version 3.3.0 (Manager) | |
| – NTPClient by Fabrice Weinberg Version 3.1.0 (Zip) | |
| https://github.com/taranais/NTPClient/archive/master.zip | |
| */ | |
| #include <WiFi.h> | |
| #include <WiFiClient.h> | |
| const char ssid[] = "Your WiFi SSID"; // WiFi name | |
| const char password[] = "Your WiFi Password"; // WiFi password | |
| #include <NTPClient.h> | |
| #include <WiFiUdp.h> | |
| WiFiUDP ntpUDP; | |
| NTPClient timeClient(ntpUDP); | |
| #include <MD_Parola.h> | |
| #include <MD_MAX72xx.h> | |
| #include <SPI.h> | |
| //#define HARDWARE_TYPE MD_MAX72XX::FC16_HW | |
| #define HARDWARE_TYPE MD_MAX72XX::ICSTATION_HW | |
| #define MAX_DEVICES 4 | |
| #define CLK_PIN 25 // 18 or 25 | |
| #define DATA_PIN 27 // 16 or 27 | |
| #define CS_PIN 26 // 17 or 26 | |
| MD_Parola DotMatrix = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES); | |
| uint8_t scrollSpeed = 50; // default frame delay value | |
| textEffect_t scrollEffect = PA_SCROLL_LEFT; | |
| textPosition_t scrollAlign = PA_LEFT; | |
| uint16_t scrollPause = 3000; // in milliseconds | |
| long currentMillis = 0; | |
| long previousMillis = 0; | |
| int interval = 1000; | |
| String formattedDate; | |
| String timeStamp, hour, minute, second; | |
| String dateStamp, year, month, date; | |
| char dateBuffer[] = ""; | |
| String monthArray[12] = { | |
| " Jan ", " Feb ", " Mar ", " Apr ", " May ", " Jun ", | |
| " Jul ", " Aug ", " Sep ", " Oct ", " Nov ", " Dec " | |
| }; | |
| enum {TIME, DATE}; | |
| boolean displayMode = TIME; | |
| void setup() | |
| { | |
| Serial.begin(115200); | |
| WiFi.begin(ssid, password); | |
| while (WiFi.status() != WL_CONNECTED) { | |
| delay(500); | |
| Serial.print("."); | |
| } | |
| Serial.println(""); | |
| Serial.println("WiFi connected."); | |
| Serial.println("IP address: "); | |
| Serial.println(WiFi.localIP()); | |
| DotMatrix.begin(); | |
| DotMatrix.setIntensity(0); | |
| timeClient.begin(); | |
| timeClient.setTimeOffset(28800); // Set offset time in seconds, GMT+8 = 28800 | |
| DotMatrix.displayText("NTP Clock by Idris", scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect); | |
| displayMode = DATE; | |
| } | |
| void loop() | |
| { | |
| while (!timeClient.update()) { | |
| timeClient.forceUpdate(); | |
| } | |
| if (displayMode == DATE && DotMatrix.displayAnimate()) { | |
| DotMatrix.displayReset(); | |
| displayMode = TIME; | |
| } | |
| currentMillis = millis(); | |
| if (currentMillis – previousMillis > interval && | |
| displayMode == TIME) { | |
| previousMillis = millis(); | |
| // The formattedDate comes with the following format: | |
| // 2018-05-28T16:00:13Z | |
| formattedDate = timeClient.getFormattedDate(); | |
| Serial.println(formattedDate); | |
| // Extract date | |
| year = formattedDate.substring(0, 4); | |
| month = formattedDate.substring(5, 7); | |
| month = monthArray[month.toInt() – 1]; | |
| date = formattedDate.substring(8, 10); | |
| date = String(date.toInt()); | |
| dateStamp = year + ", " + date + month; | |
| dateStamp.toCharArray(dateBuffer, dateStamp.length()+1); | |
| // Extract time | |
| hour = formattedDate.substring(11, 13); | |
| minute = formattedDate.substring(14, 16); | |
| second = formattedDate.substring(17, 19); | |
| if (hour.toInt() == 0) { | |
| hour = String(hour.toInt() + 12); | |
| } | |
| else if (hour.toInt() < 13) { | |
| hour = String(hour.toInt()); | |
| } | |
| else { | |
| hour = String(hour.toInt() – 12); | |
| } | |
| if (second.toInt() == 0) { | |
| displayMode = DATE; | |
| DotMatrix.displayClear(); | |
| DotMatrix.displayText(dateBuffer, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect); | |
| return; | |
| } | |
| else if (second.toInt() % 2) { | |
| timeStamp = hour + ":" + minute; | |
| } | |
| else { | |
| timeStamp = hour + " " + minute; | |
| } | |
| DotMatrix.setTextAlignment(PA_CENTER); | |
| DotMatrix.print(timeStamp); | |
| } | |
| } |
Thank You
References:
- Displaying on MAX7219 Dot Matrix Using Arduino
- Getting Date and Time with ESP32 on Arduino IDE (NTP Client)
- ESP32 Pinout References
Thanks for reading this tutorial. If you have any technical inquiries, please post at Cytron Technical Forum.
7 thoughts on “Dot Matrix Clock With NTP Server Using ESP32”
@ nur, it’s minus not dash…
Hi. I tried to run using the sample code. But somehow cannot as it got few errors. I need help for this. Please contact me.
The error were:
Arduino: 1.8.15 (Windows 10), Board: “ESP32 Dev Module, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, None”
ESP32NTPClock:22:1: error: stray ‘\342’ in program
const char ssid[] = “TINKER”; // WiFi name
^
ESP32NTPClock:22:1: error: stray ‘\200’ in program
ESP32NTPClock:22:1: error: stray ‘\234’ in program
ESP32NTPClock:22:1: error: stray ‘\342’ in program
ESP32NTPClock:22:1: error: stray ‘\200’ in program
ESP32NTPClock:22:1: error: stray ‘\235’ in program
ESP32NTPClock:23:1: error: stray ‘\342’ in program
const char password[] = “fatin241”; // WiFi password
^
ESP32NTPClock:23:1: error: stray ‘\200’ in program
ESP32NTPClock:23:1: error: stray ‘\234’ in program
ESP32NTPClock:23:1: error: stray ‘\342’ in program
ESP32NTPClock:23:1: error: stray ‘\200’ in program
ESP32NTPClock:23:1: error: stray ‘\235’ in program
ESP32NTPClock:54:1: error: stray ‘\342’ in program
char dateBuffer[] = “”;
^
ESP32NTPClock:54:1: error: stray ‘\200’ in program
ESP32NTPClock:54:1: error: stray ‘\234’ in program
ESP32NTPClock:54:1: error: stray ‘\342’ in program
ESP32NTPClock:54:1: error: stray ‘\200’ in program
ESP32NTPClock:54:1: error: stray ‘\235’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
^
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\235’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\234’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\235’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\234’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\235’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\234’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\235’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\234’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\235’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\234’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\235’ in program
ESP32NTPClock:56:1: error: stray ‘\342’ in program
ESP32NTPClock:56:1: error: stray ‘\200’ in program
ESP32NTPClock:56:1: error: stray ‘\234’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
^
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\235’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\234’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\235’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\234’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\235’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\234’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\235’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\234’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\235’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\234’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\235’ in program
ESP32NTPClock:57:1: error: stray ‘\342’ in program
ESP32NTPClock:57:1: error: stray ‘\200’ in program
ESP32NTPClock:57:1: error: stray ‘\235’ in program
ESP32NTPClock:69:1: error: stray ‘\342’ in program
Serial.print(“.”);
^
ESP32NTPClock:69:1: error: stray ‘\200’ in program
ESP32NTPClock:69:1: error: stray ‘\234’ in program
ESP32NTPClock:69:1: error: stray ‘\342’ in program
ESP32NTPClock:69:1: error: stray ‘\200’ in program
ESP32NTPClock:69:1: error: stray ‘\235’ in program
ESP32NTPClock:72:1: error: stray ‘\342’ in program
Serial.println(“”);
^
ESP32NTPClock:72:1: error: stray ‘\200’ in program
ESP32NTPClock:72:1: error: stray ‘\234’ in program
ESP32NTPClock:72:1: error: stray ‘\342’ in program
ESP32NTPClock:72:1: error: stray ‘\200’ in program
ESP32NTPClock:72:1: error: stray ‘\235’ in program
ESP32NTPClock:73:1: error: stray ‘\342’ in program
Serial.println(“WiFi connected.”);
^
ESP32NTPClock:73:1: error: stray ‘\200’ in program
ESP32NTPClock:73:1: error: stray ‘\234’ in program
ESP32NTPClock:73:1: error: stray ‘\342’ in program
ESP32NTPClock:73:1: error: stray ‘\200’ in program
ESP32NTPClock:73:1: error: stray ‘\235’ in program
ESP32NTPClock:74:1: error: stray ‘\342’ in program
Serial.println(“IP address: “);
^
ESP32NTPClock:74:1: error: stray ‘\200’ in program
ESP32NTPClock:74:1: error: stray ‘\234’ in program
ESP32NTPClock:74:1: error: stray ‘\342’ in program
ESP32NTPClock:74:1: error: stray ‘\200’ in program
ESP32NTPClock:74:1: error: stray ‘\234’ in program
ESP32NTPClock:83:1: error: stray ‘\342’ in program
DotMatrix.displayText(“NTP Clock by Idris”, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);
^
ESP32NTPClock:83:1: error: stray ‘\200’ in program
ESP32NTPClock:83:1: error: stray ‘\234’ in program
ESP32NTPClock:83:1: error: stray ‘\342’ in program
ESP32NTPClock:83:1: error: stray ‘\200’ in program
ESP32NTPClock:83:1: error: stray ‘\235’ in program
ESP32NTPClock:99:1: error: stray ‘\342’ in program
if (currentMillis – previousMillis > interval &&
^
ESP32NTPClock:99:1: error: stray ‘\200’ in program
ESP32NTPClock:99:1: error: stray ‘\223’ in program
ESP32NTPClock:111:1: error: stray ‘\342’ in program
month = monthArray[month.toInt() – 1];
^
ESP32NTPClock:111:1: error: stray ‘\200’ in program
ESP32NTPClock:111:1: error: stray ‘\223’ in program
ESP32NTPClock:114:1: error: stray ‘\342’ in program
dateStamp = year + “, ” + date + month;
^
ESP32NTPClock:114:1: error: stray ‘\200’ in program
ESP32NTPClock:114:1: error: stray ‘\234’ in program
ESP32NTPClock:114:1: error: stray ‘\342’ in program
ESP32NTPClock:114:1: error: stray ‘\200’ in program
ESP32NTPClock:114:1: error: stray ‘\235’ in program
ESP32NTPClock:129:1: error: stray ‘\342’ in program
hour = String(hour.toInt() – 12);
^
ESP32NTPClock:129:1: error: stray ‘\200’ in program
ESP32NTPClock:129:1: error: stray ‘\223’ in program
ESP32NTPClock:22:24: error: ‘TINKER’ was not declared in this scope
const char ssid[] = “TINKER”; // WiFi name
^
ESP32NTPClock:23:28: error: ‘fatin241’ was not declared in this scope
const char password[] = “fatin241”; // WiFi password
^
ESP32NTPClock:54:27: error: expected primary-expression before ‘;’ token
char dateBuffer[] = “”;
^
ESP32NTPClock:56:5: error: ‘Jan’ was not declared in this scope
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
^
ESP32NTPClock:56:18: error: ‘Feb’ was not declared in this scope
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
^
ESP32NTPClock:56:31: error: ‘Mar’ was not declared in this scope
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
^
ESP32NTPClock:56:44: error: ‘Apr’ was not declared in this scope
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
^
ESP32NTPClock:56:57: error: ‘May’ was not declared in this scope
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
^
ESP32NTPClock:56:70: error: ‘Jun’ was not declared in this scope
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
^
ESP32NTPClock:57:5: error: ‘Jul’ was not declared in this scope
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
^
ESP32NTPClock:57:18: error: ‘Aug’ was not declared in this scope
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
^
ESP32NTPClock:57:31: error: ‘Sep’ was not declared in this scope
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
^
ESP32NTPClock:57:44: error: ‘Oct’ was not declared in this scope
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
^
ESP32NTPClock:57:57: error: ‘Nov’ was not declared in this scope
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
^
ESP32NTPClock:57:70: error: ‘Dec’ was not declared in this scope
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
^
C:\Users\Asus\Documents\Arduino\ESP32NTPClock\ESP32NTPClock.ino: In function ‘void setup()’:
ESP32NTPClock:69:17: error: expected primary-expression before ‘.’ token
Serial.print(“.”);
^
ESP32NTPClock:69:21: error: expected unqualified-id before ‘)’ token
Serial.print(“.”);
^
ESP32NTPClock:73:24: error: expected ‘)’ before ‘connected’
Serial.println(“WiFi connected.”);
^
ESP32NTPClock:73:37: error: no matching function for call to ‘HardwareSerial::println(WiFiClass&)’
Serial.println(“WiFi connected.”);
^
In file included from C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Stream.h:26:0,
from C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Arduino.h:147,
from sketch\ESP32NTPClock.ino.cpp:1:
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:96:12: note: candidate: size_t Print::println(const __FlashStringHelper*)
size_t println(const __FlashStringHelper *);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:96:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘const __FlashStringHelper*’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:97:12: note: candidate: size_t Print::println(const String&)
size_t println(const String &s);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:97:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘const String&’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:98:12: note: candidate: size_t Print::println(const char*)
size_t println(const char[]);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:98:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘const char*’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:99:12: note: candidate: size_t Print::println(char)
size_t println(char);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:99:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘char’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:100:12: note: candidate: size_t Print::println(unsigned char, int)
size_t println(unsigned char, int = DEC);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:100:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘unsigned char’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:101:12: note: candidate: size_t Print::println(int, int)
size_t println(int, int = DEC);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:101:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘int’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:102:12: note: candidate: size_t Print::println(unsigned int, int)
size_t println(unsigned int, int = DEC);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:102:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘unsigned int’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:103:12: note: candidate: size_t Print::println(long int, int)
size_t println(long, int = DEC);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:103:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘long int’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:104:12: note: candidate: size_t Print::println(long unsigned int, int)
size_t println(unsigned long, int = DEC);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:104:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘long unsigned int’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:105:12: note: candidate: size_t Print::println(long long int, int)
size_t println(long long, int = DEC);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:105:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘long long int’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:106:12: note: candidate: size_t Print::println(long long unsigned int, int)
size_t println(unsigned long long, int = DEC);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:106:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘long long unsigned int’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:107:12: note: candidate: size_t Print::println(double, int)
size_t println(double, int = 2);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:107:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘double’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:108:12: note: candidate: size_t Print::println(const Printable&)
size_t println(const Printable&);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:108:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘const Printable&’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:109:12: note: candidate: size_t Print::println(tm*, const char*)
size_t println(struct tm * timeinfo, const char * format = NULL);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:109:12: note: no known conversion for argument 1 from ‘WiFiClass’ to ‘tm*’
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:110:12: note: candidate: size_t Print::println()
size_t println(void);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Print.h:110:12: note: candidate expects 0 arguments, 1 provided
ESP32NTPClock:74:19: error: ‘IP’ was not declared in this scope
Serial.println(“IP address: “);
^
ESP32NTPClock:83:26: error: ‘NTP’ was not declared in this scope
DotMatrix.displayText(“NTP Clock by Idris”, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);
^
C:\Users\Asus\Documents\Arduino\ESP32NTPClock\ESP32NTPClock.ino: In function ‘void loop()’:
ESP32NTPClock:99:23: error: expected ‘)’ before ‘previousMillis’
if (currentMillis – previousMillis > interval &&
^
ESP32NTPClock:111:38: error: expected ‘]’ before numeric constant
month = monthArray[month.toInt() – 1];
^
ESP32NTPClock:111:38: error: expected ‘;’ before numeric constant
ESP32NTPClock:114:23: error: expected primary-expression before ‘,’ token
dateStamp = year + “, ” + date + month;
^
ESP32NTPClock:114:29: error: no match for ‘operator+’ (operand type is ‘String’)
dateStamp = year + “, ” + date + month;
^
In file included from C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Arduino.h:146:0,
from sketch\ESP32NTPClock.ino.cpp:1:
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:178:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, const __FlashStringHelper*)
friend StringSumHelper & operator +(const StringSumHelper &lhs, const __FlashStringHelper *rhs);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:178:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:177:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, double)
friend StringSumHelper & operator +(const StringSumHelper &lhs, double num);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:177:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:176:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, float)
friend StringSumHelper & operator +(const StringSumHelper &lhs, float num);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:176:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:175:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, long unsigned int)
friend StringSumHelper & operator +(const StringSumHelper &lhs, unsigned long num);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:175:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:174:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, long int)
friend StringSumHelper & operator +(const StringSumHelper &lhs, long num);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:174:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:173:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, unsigned int)
friend StringSumHelper & operator +(const StringSumHelper &lhs, unsigned int num);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:173:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:172:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, int)
friend StringSumHelper & operator +(const StringSumHelper &lhs, int num);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:172:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:171:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, unsigned char)
friend StringSumHelper & operator +(const StringSumHelper &lhs, unsigned char num);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:171:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:170:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, char)
friend StringSumHelper & operator +(const StringSumHelper &lhs, char c);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:170:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:169:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, const char*)
friend StringSumHelper & operator +(const StringSumHelper &lhs, const char *cstr);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:169:34: note: candidate expects 2 arguments, 1 provided
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:168:34: note: candidate: StringSumHelper& operator+(const StringSumHelper&, const String&)
friend StringSumHelper & operator +(const StringSumHelper &lhs, const String &rhs);
^
C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/WString.h:168:34: note: candidate expects 2 arguments, 1 provided
ESP32NTPClock:129:14: error: expected primary-expression before ‘(‘ token
hour = String(hour.toInt() – 12);
^
ESP32NTPClock:129:32: error: expected ‘)’ before numeric constant
hour = String(hour.toInt() – 12);
^
Multiple libraries were found for “WiFi.h”
Used: C:\Users\Asus\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\libraries\WiFi
Not used: C:\Users\Asus\Downloads\arduino-1.8.15-windows\arduino-1.8.15\libraries\WiFi
exit status 1
stray ‘\342’ in program
This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.
exit status 1
‘class NTPClient’ has no member named ‘getFormattedDate’ tengo este error como puedo solucionar ???
Is there any difference if I use ESP8266 ? Because it seems that it does not working for me. I dont know why.
Okay it works now. Here you go. For reference. Sorry, I just learned Arduino yesterday. So total newbie.
/*
Project: Dot matrix clock with NTP server using ESP32
Board: ESP32 Dev Module (Node32 Lite)
Connections:
ESP32 | Dot Matrix
RAW – VCC
GND – GND
27 – DIN
26 – CS
25 – CLK
External libraries:
– MD_MAX72XX by majicDesigns Version 3.2.1 (Manager)
– MD_Parola by majicDesigns Version 3.3.0 (Manager)
– NTPClient by Fabrice Weinberg Version 3.1.0 (Zip)
https://github.com/taranais/NTPClient/archive/master.zip
*/
#include
#include
const char ssid[] = “wifi name”; // WiFi name
const char password[] = “password”; // WiFi password
#include
#include
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);
#include
#include
#include
//#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 4
#define CLK_PIN 25 // 18 or 25
#define DATA_PIN 27 // 16 or 27
#define CS_PIN 26 // 17 or 26
MD_Parola DotMatrix = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);
uint8_t scrollSpeed = 50; // default frame delay value
textEffect_t scrollEffect = PA_SCROLL_LEFT;
textPosition_t scrollAlign = PA_LEFT;
uint16_t scrollPause = 3000; // in milliseconds
long currentMillis = 0;
long previousMillis = 0;
int interval = 1000;
String formattedDate;
String timeStamp, hour, minute, second;
String dateStamp, year, month, date;
char dateBuffer[] = “”;
String monthArray[12] = {
” Jan “, ” Feb “, ” Mar “, ” Apr “, ” May “, ” Jun “,
” Jul “, ” Aug “, ” Sep “, ” Oct “, ” Nov “, ” Dec ”
};
enum {TIME, DATE};
boolean displayMode = TIME;
void setup()
{
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(“.”);
}
Serial.println(“”);
Serial.println(“WiFi connected.”);
Serial.println(“IP address: “);
Serial.println(WiFi.localIP());
DotMatrix.begin();
DotMatrix.setIntensity(0);
timeClient.begin();
timeClient.setTimeOffset(28800); // Set offset time in seconds, GMT+8 = 28800
DotMatrix.displayText(“NTP Clock by Idris”, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);
displayMode = DATE;
}
void loop()
{
while (!timeClient.update()) {
timeClient.forceUpdate();
}
if (displayMode == DATE && DotMatrix.displayAnimate()) {
DotMatrix.displayReset();
displayMode = TIME;
}
currentMillis = millis();
if (currentMillis – previousMillis > interval &&
displayMode == TIME) {
previousMillis = millis();
// The formattedDate comes with the following format:
// 2018-05-28T16:00:13Z
formattedDate = timeClient.getFormattedDate();
Serial.println(formattedDate);
// Extract date
year = formattedDate.substring(0, 4);
month = formattedDate.substring(5, 7);
month = monthArray[month.toInt() – 1];
date = formattedDate.substring(8, 10);
date = String(date.toInt());
dateStamp = year + “, ” + date + month;
dateStamp.toCharArray(dateBuffer, dateStamp.length()+1);
// Extract time
hour = formattedDate.substring(11, 13);
minute = formattedDate.substring(14, 16);
second = formattedDate.substring(17, 19);
if (hour.toInt() == 0) {
hour = String(hour.toInt() + 12);
}
else if (hour.toInt() < 13) {
hour = String(hour.toInt());
}
else {
hour = String(hour.toInt() – 12);
}
if (second.toInt() == 0) {
displayMode = DATE;
DotMatrix.displayClear();
DotMatrix.displayText(dateBuffer, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);
return;
}
else if (second.toInt() % 2) {
timeStamp = hour + ":" + minute;
}
else {
timeStamp = hour + " " + minute;
}
DotMatrix.setTextAlignment(PA_CENTER);
DotMatrix.print(timeStamp);
}
}
This is the error..log I suppose.
=====================================================================================
Arduino: 1.8.13 (Windows 10), Board: “ESP32 Dev Module, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, None”
ESP32-ntpclock-dotmatrix-test1:99:3: error: stray ‘\342’ in program
if (currentMillis – previousMillis > interval &&
^
ESP32-ntpclock-dotmatrix-test1:99:3: error: stray ‘\200’ in program
ESP32-ntpclock-dotmatrix-test1:99:3: error: stray ‘\223’ in program
ESP32-ntpclock-dotmatrix-test1:111:5: error: stray ‘\342’ in program
month = monthArray[month.toInt() – 1];
^
ESP32-ntpclock-dotmatrix-test1:111:5: error: stray ‘\200’ in program
ESP32-ntpclock-dotmatrix-test1:111:5: error: stray ‘\223’ in program
ESP32-ntpclock-dotmatrix-test1:129:7: error: stray ‘\342’ in program
hour = String(hour.toInt() – 12);
^
ESP32-ntpclock-dotmatrix-test1:129:7: error: stray ‘\200’ in program
ESP32-ntpclock-dotmatrix-test1:129:7: error: stray ‘\223’ in program
C:\Users\LemonKicker\Documents\Arduino\ESP32-ntpclock-dotmatrix-test1\ESP32-ntpclock-dotmatrix-test1.ino: In function ‘void loop()’:
ESP32-ntpclock-dotmatrix-test1:99:25: error: expected ‘)’ before ‘previousMillis’
if (currentMillis – previousMillis > interval &&
^
ESP32-ntpclock-dotmatrix-test1:105:32: error: ‘class NTPClient’ has no member named ‘getFormattedDate’
formattedDate = timeClient.getFormattedDate();
^
ESP32-ntpclock-dotmatrix-test1:111:42: error: expected ‘]’ before numeric constant
month = monthArray[month.toInt() – 1];
^
ESP32-ntpclock-dotmatrix-test1:111:42: error: expected ‘;’ before numeric constant
ESP32-ntpclock-dotmatrix-test1:129:20: error: expected primary-expression before ‘(‘ token
hour = String(hour.toInt() – 12);
^
ESP32-ntpclock-dotmatrix-test1:129:38: error: expected ‘)’ before numeric constant
hour = String(hour.toInt() – 12);
^
Multiple libraries were found for “WiFi.h”
Used: C:\Users\LemonKicker\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.4\libraries\WiFi
Not used: C:\Program Files (x86)\Arduino\libraries\WiFi
Multiple libraries were found for “NTPClient.h”
Used: C:\Users\LemonKicker\Documents\Arduino\libraries\NTPClient
Not used: C:\Users\LemonKicker\Documents\Arduino\libraries\NTPClient-master
exit status 1
stray ‘\342’ in program
This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.
I got an error on line 129. Can somebody please help me by telling whats wrong with that line?
hour = String(hour.toInt() – 12);