I'm using NodeMCU 1.0(ESP12E Module)
I had debug that if I using D2,D3 can't and work get WDT
but it can work with D1
I don't know why it can't work with D2,D3. I had try to reconnect the wire & change the servo
But still can't work.
How can I use the D1&D2&D3 without get error
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <Arduino.h>
#include "HX711.h"
#include <Servo.h>
// HX711 circuit wiring
const int LOADCELL_DOUT_PIN = 12;
const int LOADCELL_SCK_PIN = 13;
HX711 scale;
Servo servo1;
Servo servo2;
//Servo servo3;
// Update these with values suitable for your network.
const char* ssid = "**********";
const char* password = "***********";
const char* mqtt_server = "broker.hivemq.com";
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());
//hx711
scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
scale.set_scale(-478.507);
scale.tare();
}
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]);
}
// 將 payload 轉換為字串
String payloadString = "";
for (int i = 0; i < length; i++) {
payloadString += (char)payload[i];
}
// 分割字串並儲存數值到 w1、w2 和 w3
String values[3];
int index = 0;
for (int i = 0; i < payloadString.length(); i++) {
char c = payloadString.charAt(i);
if (c >= '0' && c <= '9') {
values[index] += c;
} else if (values[index] != "") {
index++;
}
}
// 將數值轉換為整數並儲存到 w1、w2 和 w3
int w1 = 0, w2 = 0, w3 = 0;
if (index >= 0) {
w1 = values[0].toInt();
}
if (index >= 1) {
w2 = values[1].toInt();
}
if (index >= 2) {
w3 = values[2].toInt();
}
// 印出儲存的數值
Serial.println();
Serial.print("w1: ");
Serial.println(w1);
Serial.print("w2: ");
Serial.println(w2);
Serial.print("w3: ");
Serial.println(w3);
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Create a random client ID
String clientId = "ESP8266Client-";
clientId += String(random(0xffff), HEX);
// Attempt to connect
if (client.connect(clientId.c_str())) {
Serial.println("connected");
// Once connected, publish an announcement...
//client.publish("outTopic", "hello world");
// ... and resubscribe
client.subscribe("machine/powderdispensor/in");
} 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() {
servo1.attach(5); //D1
servo2.attach(6); // D2
//servo3.attach(7); // D3
servo1.write(0);
servo2.write(0);
//servo3.write(0);
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 > 1000) {
lastMsg = now;
++value;
char buffer[10];
dtostrf(scale.get_units(10), 5, 2, buffer);
client.publish("machine/powderdispensor/out", buffer);
}
// if (scale.get_units(10)+1 < w1) {
// servo1.write(90); // 90 度表示 w1 未達到
// servo2.write(0);
// servo3.write(0);
// } else if (scale.get_units(10) <= w1 + w2) {
// servo1.write(0); // 0 度表示 w1 達到、w2 未達到
// servo2.write(90);
// servo3.write(0);
// } else if (scale.get_units(10) <= w1 + w2 + w3) {
// servo1.write(0); // 0 度表示 w1 達到
// servo2.write(0); // 0 度表示 w2 達到、w3 未達到
// servo3.write(90);
// }else if (scale.get_units(10) >= w1 + w2 + w3) {
// servo1.write(0); // 0 度表示 w1 達到
// servo2.write(0); // 0 度表示 w2 達到、w3 未達到
// servo3.write(0);
// } else {
// servo1.write(0); // 0 度表示 w1 達到
// servo2.write(0); // 0 度表示 w2 達到
// servo3.write(0); // 0 度表示 w3 達到
// }
}
The Serial Monitor when I trying to use D2 or D3
19:31:33.933 -> ets Jan 8 2013,rst cause:4, boot mode:(3,6)
19:31:33.933 ->
19:31:33.933 -> wdt reset
19:31:33.933 -> load 0x4010f000, len 3424, room 16
19:31:33.933 -> tail 0
19:31:33.933 -> chksum 0x2e
19:31:33.933 -> load 0x3fff20b8, len 40, room 8
19:31:33.978 -> tail 0
19:31:33.978 -> chksum 0x2b
19:31:33.978 -> csum 0x2b
19:31:33.978 -> v000469f0
19:31:33.978 -> ~ld
19:31:34.024 -> � a�n�r��n|� l � l` b brl�nb�n l`� rl�l� �
Serial Monitor can work with D1
19:29:22.940 -> Connecting to CHT-1233
19:29:23.507 -> .......
19:29:27.248 -> WiFi connected
19:29:27.248 -> IP address:
19:29:27.248 -> 192.168.1.116
19:29:28.511 -> Attempting MQTT connection...connected
19:29:45.020 -> Message arrived [machine/powderdispensor/in] ["100","400","700"]
19:29:45.020 -> w1: 100
19:29:45.020 -> w2: 400
19:29:45.020 -> w3: 700```