เชื่อม Wifi บน Raspberry Pi OS โดยไม่มีจอ

สร้างไฟล์ชื่อ wpa_supplicant.conf ไว้ข้างนอก

				
					country=TH # Your 2-digit country code
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1 
network={
ssid="YOUR_NETWORK_NAME"
psk="YOUR_PASSWORD"
key_mgmt=WPA-PSK
}
				
			

กรณีที่มีหลาย SSID 

				
					country=TH # Your 2-digit country code
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1 

network={
ssid="YOUR_NETWORK_NAME1"
psk="YOUR_PASSWORD1"
key_mgmt=WPA-PSK
id_str="ID_1"
priority=100
}

network={
ssid="YOUR_NETWORK_NAME1"
psk="YOUR_PASSWORD1"
key_mgmt=WPA-PSK
id_str="ID_2"
priority=99
}
				
			

เปิด SSH บน Raspberry Pi OS โดยไม่มีจอ

สร้างไฟล์ชื่อ ssh ไม่มีนามสกุลไว้

ใน Windows ไป command prompt สิทธิ์ admin

ไป ที่ Drive flash เช่น H:

copy con ssh. Enter

จากนั้นกด Ctrl-Z

ไฟล์สร้างไว้

NodeMCU ESP8266 TM1637 NTP DHT11

  • NODEMCU ESP8266
  • 4 Digit Seven Segment TM1637
  • DHT11
  • SevenSegmentTM1637.h

#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include “SevenSegmentTM1637.h”
#include “SevenSegmentExtended.h”
#include <DHT.h>

#define CLK D2 // Define the connections pins:
#define DIO D3
#define DHTPIN D5 // Pin sensor is connected to

char cdmy[11];

// Set DHT type, uncomment whatever type you’re using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
float temp_c ;
float humi ;
char tempf[4];
float tempr;
char humif[4];
//SevenSegmentTM1637 display(CLK, DIO); // Create display object of type TM1637Display:
SevenSegmentExtended display(CLK, DIO);
DHT dht = DHT(DHTPIN, DHTTYPE);

const char *ssid = “xxxxx”;
const char *password = “xxxxxxx”;

//const long utcOffsetInSeconds = 19802;
const long utcOffsetInSeconds = 25200;

// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, “1.th.pool.ntp.org”, utcOffsetInSeconds);

void setup(){
display.begin(); // initializes the display
display.setBacklight(100); // set the brightness to 100 %
Serial.begin(9600);
Serial.println();
Serial.println(“DHTxx test!”);
dht.begin();
// Begin serial communication at a baud rate of 9600:

WiFi.begin(ssid, password);

while ( WiFi.status() != WL_CONNECTED ) {
delay(500);
Serial.print (“.”);
}

timeClient.begin();
}

void loop() {

// Read the temperature as Celsius and Fahrenheit:
temp_c = dht.readTemperature();
humi = dht.readHumidity();

// print both to serial console
Serial.println();
Serial.print(temp_c);
Serial.print(“<-T H->”);
Serial.println(humi);

timeClient.update();
unsigned long epochTime = timeClient.getEpochTime(); //get date

int currentHour = timeClient.getHours();
int currentMinute = timeClient.getMinutes();

struct tm *ptm = gmtime ((time_t *)&epochTime);
int monthDay = ptm->tm_mday;
sprintf(cdmy,” %02d-%02d-%02d “,ptm->tm_mday,ptm->tm_mon+1,ptm->tm_year+2443);

for (int i = 0; i < 2; i++) {
display.clear(); // clear the display
display.print(cdmy); // print right->left day month year
delay(100);
}
// print time hour min
//for (int i = 0; i < 2; i++) {
display.clear(); // clear the display
// print hour min for
display.printTime(currentHour,currentMinute, true); //print hour.min
//display.blink(); // blink
delay(1000);

// }

display.setColonOn(1); // open dot . led version dot if use time led : show led
display.printNumber(static_cast<int>(temp_c * 100),false,false,false);
display.printRaw(88,3); // display c at location 3
display.blink();
delay(2000);
display.printRaw(128,1);
display.printNumber(static_cast<int>(humi * 100),false,false,false);
display.printRaw(116,3); // display h at location 3
display.blink();
delay (3000);
display.setColonOn(false); // close colon
display.clear();

}xxx

TM1637.h Groove

#include “TM1637.h”

TM1637 tm1637(CLK, DIO);

tm1637.set();

tm1637.init();

tm1637.set(BRIGHTEST);//BRIGHT_TYPICAL = 2,BRIGHT_DARKEST = 0,BRIGHTEST = 7;

tm1637.clearDisplay(); // clear the display
tm1637.displayStr(); 

tm1637.displayStr(‘ABCD’); 

// Without specifying decimal pointt it displays int
tm1637.displayNum(num);

// Colon light up as decimal point
tm1637.displayNum(num, 2);
delay(2000);

// Note that adding 3 digits (-123450) makes number out of int range
tm1637.displayNum(num, 3);
delay(2000);

// Display negative numbers without sign
tm1637.displayNum(num, 0, false);
delay(2000);

/ LOVE, O=0

    tm1637.displayStr(“L0UE”);

    delay(2000);

    // loop

    tm1637.displayStr(“HELL0-1234567890”, 1000);

    delay(2000);

    // ON

    tm1637.displayStr(“0N”);

    delay(2000);

    // OFF

    tm1637.displayStr(“0FF”);

    delay(2000);

/tm1637.display(0, ListDisp[0]);
tm1637.display(1, ListDisp[1]);
tm1637.display(2, ListDisp[2]);
tm1637.display(3, ListDisp[3]);

Display1.display(0, 1); // แสดงเลข 1 ที่หลัก 0
delay(1000); // *** หลัก (0,1,2,3) นับจากซ้ายตามลำดับ

Display1.display(1, 2); // แสดงเลข 2 ที่หลัก 1
delay(1000);

Display1.display(2, 5); // แสดงเลข 5 ที่หลัก 2
delay(1000);

Display1.display(3, 8); // แสดงเลข 8 ที่หลัก 3
delay(1000);

Display1.display(0, CHAR_BLANK); // แสดง ‘ ‘ (ช่องว่าง) ที่หลัก 0
delay(1000);

Display1.display(1, CHAR_BLANK); // แสดง ‘ ‘ (ช่องว่าง) ที่หลัก 1
delay(1000);

Display1.display(2, CHAR_BLANK); // แสดง ‘ ‘ (ช่องว่าง)ที่หลัก 2
delay(1000);

Display1.display(3, CHAR_BLANK); // แสดง ‘ ‘ (ช่องว่าง) ที่หลัก 3
delay(1000);

Display1.point(POINT_ON); // เปิดแสดงจุด “:” ระหว่างหลัก 1 กับ หลัก 2
Display1.clearDisplay(); // ต้องตาม Function นี้ จุดถึงจะแสดง
delay(1000);

tm1637.point(POINT_OFF); // ปิดแสดงจุด “:” ระหว่างหลัก 1 กับ หลัก 2
tm1637.clearDisplay(); // ต้องตาม Function นี้ จุดถึงจะปิดไม่แสดง
delay(1000);

Display1.point(POINT_ON);
Display1.clearDisplay();
Display1.display(0, 1);
Display1.display(1, 2);
Display1.display(2, 3);
Display1.display(3, 4);
delay(1000);

 

Arduino C TM structure

struct tm *ptm = gmtime ((time_t *)&epochTime);
int monthDay = ptm->tm_mday;
sprintf(cdmy,” %02d-%02d-%02d “,ptm->tm_mday,ptm->tm_mon+1,ptm->tm_year+2443);
sprintf(chm,”%02d%02d”,ptm->tm_hour,ptm->tm_min);

MemberTypeMeaningRange
tm_secintseconds after the minute0-61*
tm_minintminutes after the hour0-59
tm_hourinthours since midnight0-23
tm_mdayintday of the month1-31
tm_monintmonths since January0-11
tm_yearintyears since 1900
tm_wdayintdays since Sunday0-6
tm_ydayintdays since January 10-365
tm_isdstintDaylight Saving Time flag

ESP8266 NODEMCU TM1637 NTP

#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <TM1637Display.h> //

#define CLK D2 // Define the connections pins:
#define DIO D3

TM1637Display display = TM1637Display(CLK, DIO); // Create display object of type TM1637Display:

const char *ssid = “XXXX”;
const char *password = “xxxxx”;

//const long utcOffsetInSeconds = 19802;
const long utcOffsetInSeconds = 25200;

// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, “1.th.pool.ntp.org”, utcOffsetInSeconds);

void setup(){
Serial.begin(9600);
Serial.println();
// Begin serial communication at a baud rate of 9600:

WiFi.begin(ssid, password);

while ( WiFi.status() != WL_CONNECTED ) {
delay ( 500 );
Serial.print ( “.” );
}

timeClient.begin();
}

void loop() {
int A,B;
display.setBrightness(7); // Set the brightness:

timeClient.update();
unsigned long epochTime = timeClient.getEpochTime(); //get date
Serial.print(“Epoch Time: “);
Serial.println(epochTime);

int currentHour = timeClient.getHours();
Serial.print(“Hour: “);
Serial.println(currentHour);

int currentMinute = timeClient.getMinutes();
Serial.print(“Minutes: “);
Serial.println(currentMinute);
//Get a time structure

struct tm *ptm = gmtime ((time_t *)&epochTime);
int monthDay = ptm->tm_mday;
Serial.print(“Month day: “);
Serial.print(monthDay);
display.showNumberDec(monthDay, false, 2, 1);
delay(3000);
display.clear();
int currentMonth = ptm->tm_mon+1;
Serial.print(” Month: “);
Serial.print(currentMonth);
display.showNumberDec(currentMonth, true, 2, 1);
delay(3000);
display.clear();

//int currentYear = ptm->tm_year+1900;
int currentYear = ptm->tm_year+2443;
Serial.print(” Year: “);
Serial.println(currentYear);
display.showNumberDec(currentYear, false, 4, 0);
delay(3000);
display.clear();

A = timeClient.getHours() * 100 + timeClient.getMinutes();
B = timeClient.getSeconds();

if((B % 2) == 0)
{
display.showNumberDecEx(A, 0b01000000 , false, 4, 0);
}
else
{
display.showNumberDecEx(A, 0b00000000 , false, 4, 0);
}

delay (3000);
display.clear();

}

.

NODEMCU 4DIGIT TM1637 DHT11

#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <TM1637Display.h> //
#include <DHT.h>

#define CLK D2 // Define the connections pins:
#define DIO D3
#define DHTPIN D5 // Pin sensor is connected to

// Create degree Celsius symbol:
const uint8_t celsius[] = {
// SEG_A | SEG_B | SEG_F | SEG_G, // Circle
SEG_G | SEG_E | SEG_D // c
};
const uint8_t hum[] = {
// SEG_A | SEG_B | SEG_F | SEG_G, // Circle
SEG_F | SEG_E | SEG_G | SEG_C // h
};

// Set DHT type, uncomment whatever type you’re using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)

float temp_c = 0.0;
float humi = 0.0;
TM1637Display display = TM1637Display(CLK, DIO); // Create display object of type TM1637Display:
DHT dht = DHT(DHTPIN, DHTTYPE);

const char *ssid = “xxxx”;
const char *password = “yyyyyy”;

//const long utcOffsetInSeconds = 19802;
const long utcOffsetInSeconds = 25200;

// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, “1.th.pool.ntp.org”, utcOffsetInSeconds);

void setup(){
Serial.begin(9600);
Serial.println();
Serial.println(“DHTxx test!”);
dht.begin();
// Begin serial communication at a baud rate of 9600:

WiFi.begin(ssid, password);

while ( WiFi.status() != WL_CONNECTED ) {
delay ( 500 );
Serial.print ( “.” );
}

timeClient.begin();
}

void loop() {
int A,B;

// Read the temperature as Celsius and Fahrenheit:
temp_c = dht.readTemperature();
humi = dht.readHumidity();

// print both to serial console
Serial.printf(“%2.2fC %2.2f%%\n”, temp_c, humi);

timeClient.update();
display.setBrightness(7); // Set the brightness:

A = timeClient.getHours() * 100 + timeClient.getMinutes();
B = timeClient.getSeconds();

if((B % 2) == 0)
{
display.showNumberDecEx(A, 0b01000000 , false, 4, 0);
}
else
{
display.showNumberDecEx(A, 0b00000000 , false, 4, 0);
}

delay (3000);
display.clear();
display.showNumberDecEx(static_cast<int>(temp_c * 100), 0x40);
display.setSegments(celsius, 1, 3);
delay (30000);
display.clear();
display.showNumberDecEx(static_cast<int>(humi * 100), 0x40);
display.setSegments(hum, 1, 3);
delay (30000);
display.clear();

}

ESPEasy ESP8266 ESP12E DS18B20

เมื่อตั้งค่า Sensor  GPIO <- TX ถูกต้องแล้ว

ให้ดู log ว่าแสดง DS: อะไรหรือไม่

ที่พบคือเมื่อต่อขาถูกต้องแล้ว Enable พบว่าแสดงเป็น

DS : Cannot set Resloution 

และ Device Address ไม่แสดงอะไร

ผมลองปรับ Device Resolution bit ไปที่ 12 แล้ว submit

พบว่า Device Address  แสดง Address ออกมา เมื่อเลือกแล้ว submit จะแสดงอุณหภูมิออกมาได้