MAX7219 LED Matrix MQTT Esp8266 yordamida: 6 qadam

2025 Muallif: John Day | [email protected]. Oxirgi o'zgartirilgan: 2025-01-23 15:14

Men MAX7219 LED displeyimni MQTT serveriga ulashga va MQTT obunasidan matnni ko'rsatishga harakat qilardim.

lekin men Internetda mos kodni olmadim, shuning uchun men o'z kodimni yaratishni boshladim …

va natija juda yaxshi …

• har qanday matnni LED displeyda ko'rsatish mumkin
• Siz ekranning intensivligini sozlashingiz mumkin
• aylantirish tezligini belgilashingiz mumkin

Ta'minotlar

1. Esp8266 ishlab chiqish paneli. (mening ishim bu NODE MCU v1.0)
2. MAX7219 LED matritsali displey.

Kerakli dasturiy ta'minot:

1. Arduino IDE.
2. MQTT serveri. (Mening ishim chivin)

Kutubxona kerak:

1. ESP8266WiFi.h
2. MD_MAX72xx.h
3. EspMQTTClient.h

1 -qadam: Esp8266 ishlab chiqish uchun Arduino IDE -ni o'rnating

Arduino -ning afzalliklarini oching, so'ng quyidagi URL -ni qo'shimcha taxtalar menejeri URL -lariga joylashtiring:

arduino.esp8266.com/stable/package_esp8266com_index.json

keyin asboblar> taxtalar> taxtalar menejeri va esp8266 ni qidiring va o'rnating.

Endi sizning Arduino ideangiz esp8266 ishlab chiqishga tayyor.

2 -qadam: Tashqi kutubxonalarni yuklab oling

endi bizga MAX7219 va MQTT Client uchun kutubxonalar kerak.

kutubxonalarni yuklab olamiz va o'rnatamiz

Sketch> Kutubxonani qo'shish> Arduino IDE -dagi kutubxonalarni boshqarish -ga o'ting

va EspMQTTClient -ni qidiring va O'rnatish -ni bosing

Eslatma: Barcha qaram kutubxonalarni o'rnating, bu juda muhim

Yana MD_MAX72xx -ni qidiring va O'rnatish -ni bosing

3 -qadam: Endi kod yozing

Endi quyidagi kodni joylashtiring

#qo'shing

#include #include #include "EspMQTTClient.h" #MAX_DEVICES 4 ni aniqlang // qurilmangiz sonini aniqlang #CLK_PIN D5 ni belgilang // yoki SCK #DATA_PIN D7 ni belgilang // yoki MOSIni belgilang #CS_PIN D4 ni belgilang // yoki SS // uni sozlashingiz mumkin. har qanday pinga #define HARDWARE_TYPE MD_MAX72XX:: PAROLA_HW // displey turiga qarab o'zgartirish MD_MAX72XX mx = MD_MAX72XX (HARDWARE_TYPE, CS_PIN, MAX_DEVICES); const uint8_t MESG_SIZE = 255; const uint8_t CHAR_SPACING = 1; uint8_t SCROLL_DELAY = 75; // standart aylantirish kechikishi uint8_t INTENSITY = 5; // standart intensivlik char curMessage [MESG_SIZE]; char newMessage [MESG_SIZE]; bool newMessageAvailable = noto'g'ri; void scrollDataSink (uint8_t dev, MD_MAX72XX:: transformType_t t, uint8_t col) {} uint8_t scrollDataSource (uint8_t dev, MD_MAX72XX:: transformType_t t) {static enum {S_IDLE, S_NEX_CHOW_, S_NEX_CHOW_, S_NEX_CHOW_ statik char *p; statik uint16_t curLen, showLen; statik uint8_t cBuf [8]; uint8_t colData = 0; switch (holat) {case S_IDLE: p = curMessage; if (newMessageAvailable) {strcpy (curMessage, newMessage); newMessageAvailable = noto'g'ri; } holat = S_NEXT_CHAR; tanaffus; holat S_NEXT_CHAR: agar (*p == '\ 0') holat = S_IDLE; boshqa {showLen = mx.getChar (*p ++, sizeof (cBuf) / sizeof (cBuf [0]), cBuf); curLen = 0; davlat = S_SHOW_CHAR; } tanaffus; holat S_SHOW_CHAR: colData = cBuf [curLen ++]; agar (curLen = SCROLL_DELAY) {mx.transform (MD_MAX72XX:: TSL); // oldinga siljiting - qayta qo'ng'iroq barcha ma'lumotlarni yuklaydi prevTime = millis (); // keyingi safar boshlanish nuqtasi}} void setup () {Serial.begin (115200); mx.begin (); mx.control (MD_MAX72XX:: INTENSITY, INTENSITY); mx.setShiftDataInCallback (scrollDataSource); mx.setShiftDataOutCallback (scrollDataSink); curMessage [0] = newMessage [0] = '\ 0'; sprintf (curMessage, "Aqlli displey"); } void onConnectionEstablished () {// MQTT obunasi mavzusi matnli mijozni ko'rsatish uchun.subscribe ("leddisplay/text", (const String & payload) {sprintf (curMessage, payload.c_str ());});

// Displey intensivligini nazorat qilish uchun MQTT obunasi mavzusi

client.subscribe ("leddisplay/intensivligi", (const String & payload) {mx.control (MD_MAX72XX:: INTENSITY, payload.toInt ());}); // MQTT obunasi mavzusi displeyda aylantirish tezligini boshqarish client.subscribe ("leddisplay/scroll", (const String & payload) {SCROLL_DELAY = payload.toInt ();}); } void loop () {client.loop (); scrollText (); }

Batafsil ma'lumot uchun ushbu omborga qarang

github.com/souravj96/max7219-mqtt-esp8266

4 -qadam: O'chirish diagrammasi

MAX7219 displeyini NODE MCU bilan ulang

5 -qadam: Kodni Esp8266 -ga yuklang

Endi to'g'ri taxta turini va ketma -ket portni tanlang, so'ngra yuklashni bosing.

6 -qadam: Hammasini sinab ko'ring

agar hamma narsa to'g'ri bo'lsa, sizning esp8266 sizning MQTT serveringizga ulanadi.

endi, agar biror narsa ko'rsatiladigan LEDdisplay/matn mavzusida e'lon qilinsa.

{

mavzu: "leddisplay/text", foydali yuk: "bu erda sizning xabaringiz"}

agar siz ekranning intensivligini sozlamoqchi bo'lsangiz

{

mavzu: "leddisplay/intensivligi", yuk: "2" // maksimal 15 va min 0}

Agar siz ekranning aylanish tezligini o'rnatmoqchi bo'lsangiz

{

mavzu: "leddisplay/scroll", yuk: "100" // maksimal 255 va min 0}

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