My compliments to EasyEDA & OSHWLab & JLCPCB & LCSC for the excellent software and Service   ThumbsUp!

Sorry for my Englisch, Dutch is my Mothers language.

Fabio Mastrotto, by seeing his video He got me into this trouble https://youtu.be/CM0h_ad7ETU

ART ESP32 WiFi TFT Touch Clock Thermostat.

The ART of Temperature controlled.

http://www.Arduino.TK

The Best NEST Thing ;-)

Part of SMART is ART, ART is SMART.

Let's make the NEST best Thermostat, Make ART smart.

Impressive with Espressif

3d view of the PCB https://youtu.be/dH2b9dbxTJg

3d view of the PCB https://youtu.be/dH2b9dbxTJg

Design a PCB board to connect      ESP32 dev kit 38pin       to       14 pin SPI Touch TFT screen

With some extra Female holes to connect other wires / PCB modules

Got my 4inch SPI Touch TFT LCD from https://nl.aliexpress.com/item/4001122632293.html

3.2inch 14pin SPI TFT Touch ili9341 = supported by TFT_eSPI library

https://www.google.com/search?q=aliexpress+SKU%3AMSP3218

http://www.lcdwiki.com/3.2inch_SPI_Module_ILI9341_SKU:MSP3218

http://www.lcdwiki.com/images/d/d4/MSP3218-size.jpg

3.5inch 14pin SPI TFT Touch ili9488 = supported by TFT_eSPI library

https://www.google.com/search?q=aliexpress+SKU%3AMSP3520

http://www.lcdwiki.com/3.5inch_SPI_Module_ILI9488_SKU:MSP3520

http://www.lcdwiki.com/images/2/20/3.5inch_SPI_Size.png

4inch 14pin SPI TFT Touch ili7796  = supported by TFT_eSPI library

https://www.google.com/search?q=aliexpress+SKU%3AMSP4021

http://www.lcdwiki.com/4.0inch_SPI_Module_ST7796

http://www.lcdwiki.com/zh/images/b/b4/4.0inch_SPI_size.png

Maybe also add a connector for

NTC Thermistor KY-013

     Like the resolution of a NTC Thermistor

    prefer a NTC above big steps off digital sensor (But MayBe BME280 is an good one)

ESP32 analog read example

ESP32 Note: Analog noise and fluctuences with analog read => multiread and capacitor 

https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/adc.html

Not so clear for me as DIY Tinker => think they want a 0.1mf 100uf capacitor between signal and ground to damp the analog read

// ESP32 analog read test
// KY-013 NTC thermistor signal is connected to GPIO 34 (Analog ADC1_CH6)
// KY-013 NTC thermistor - is connected to 3.3V //strange but correct - to +3.3V
// KY-013 NTC thermistor + is connected to GND  //strange but correct + to GND
// outputs Fahrenheit and Celcius to serial monitor
// https://oshwlab.com/l.dijkman/esp32-dev-kit-38-pin-to-spi-touch-tft
// https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat
// http://www.Arduino.TK
//
// https://www.google.com/search?q=3+fahrenheit+to+celsius

int ThermistorPin = 34;   //gpio34
int Vo;
float R1 = 10000;
float logR2, R2, T, Tc, Tf;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;
float voltage = 3.3;   //use 3.3volt

void setup() {
  Serial.begin(115200);  //serial monitor
}

void loop() {
  Vo = 0;
  for (int i = 0; i <= 500; i++) {          // do 500 readings makes it more stable
    Vo = Vo + analogRead(ThermistorPin);
  }
  Vo = Vo / 500;                           // divide result of 500 radings by 500

  R2 = R1 * (4095.0 / (float)Vo - 1.0);    // 4095=12bit analog read
  logR2 = log(R2);
  T = (1.0 / (c1 + c2 * logR2 + c3 * logR2 * logR2 * logR2));
  Tc = T - 273.15;
  Tf = (Tc * 9.0) / 5 + 32.0;

  Serial.print("Temperature: ");
  Serial.print(Tf);
  Serial.print(" F; ");
  Serial.print(Tc);
  Serial.println(" C");
  Serial.print(Tc,1);    // 1 decimal?
  Serial.println(" C");

  delay(500);
}

Relay Module 5V Relay module KY-019

(VCC 5V. Control line can be 3.3V For ESP32) (module KY-019)

on this board the control line goes to a transistor

other boards use an optical gate wich is also good / ok

wich switches the vcc 5v coil voltage

so safe to switch with 3.3volt esp32 gpio  

// ESP32 relays test KY-019  tick like a clock
// VCC = 5v
// GND
// IN from gpio 26
// https://oshwlab.com/l.dijkman/esp32-dev-kit-38-pin-to-spi-touch-tft 
// https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat
// http://www.Arduino.TK

const int relay = 26;

void setup() {
  Serial.begin(115200);
  pinMode(relay, OUTPUT);
}

void loop() {
  digitalWrite(relay, LOW);
  Serial.println("relays off");
  delay(500); 

  digitalWrite(relay, HIGH);
  Serial.println("relays on");
  delay(500);
}

Passive Buzzer module KY-006  

Passive can make different tones with PWM)

// ESP32 KY-006 passive buzzer test
// https://oshwlab.com/l.dijkman/esp32-dev-kit-38-pin-to-spi-touch-tft
// https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat
// http://www.Arduino.TK

#include <Tone32.h> //https://github.com/lbernstone/Tone32

#define BUZZER_PIN 12  //gpio 12  signal and ground for KY-006 Passive buzzer module
#define BUZZER_CHANNEL 0

void setup() {

}

void loop() {
  tone(BUZZER_PIN, NOTE_C4, 500, BUZZER_CHANNEL);
  noTone(BUZZER_PIN, BUZZER_CHANNEL);
  tone(BUZZER_PIN, NOTE_D4, 500, BUZZER_CHANNEL);
  noTone(BUZZER_PIN, BUZZER_CHANNEL);
  tone(BUZZER_PIN, NOTE_E4, 500, BUZZER_CHANNEL);
  noTone(BUZZER_PIN, BUZZER_CHANNEL);
  tone(BUZZER_PIN, NOTE_F4, 500, BUZZER_CHANNEL);
  noTone(BUZZER_PIN, BUZZER_CHANNEL);
  tone(BUZZER_PIN, NOTE_G4, 500, BUZZER_CHANNEL);
  noTone(BUZZER_PIN, BUZZER_CHANNEL);
  tone(BUZZER_PIN, NOTE_A4, 500, BUZZER_CHANNEL);
  noTone(BUZZER_PIN, BUZZER_CHANNEL);
  tone(BUZZER_PIN, NOTE_B4, 500, BUZZER_CHANNEL);
  noTone(BUZZER_PIN, BUZZER_CHANNEL);
}

Add Moisture sensor DHT11 or DHT22

https://randomnerdtutorials.com/esp32-dht11-dht22-temperature-humidity-sensor-arduino-ide/

Add i2c Barometric pressure sensor BMP280-BaroMeter from what i have read this sensor also has a temperature sensor wth a nice resolution of 0.01 degree   

BME280? https://randomnerdtutorials.com/esp32-bme280-arduino-ide-pressure-temperature-humidity/

BMP280 can only measure temperature and air pressure

 BME280 can measure humidity in addition to temperature and air pressure. 

also interesting a webserver with this sensor https://randomnerdtutorials.com/esp32-web-server-with-bme280-mini-weather-station/

/*********
***************************************************************
  most of this code came from https://randomnerdtutorials.com 
***************************************************************
changes made by luberth dijkman
For Art Thermostat, a better NEST

BME 280 Baromter Humidity and temperature sensor
ESP32 arduino ide example
https://oshwlab.com/l.dijkman
https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat
// http://www.Arduino.TK
i2c SDA SCL 
gpio 21, gpio 22
VCC 3.3V 
GND
*********/

#include <Wire.h>
#include <Adafruit_Sensor.h>  // i luberth used https://github.com/adafruit/Adafruit_Sensor
#include <Adafruit_BME280.h>  // i luberth used https://github.com/adafruit/Adafruit_BME280_Library

#define SEALEVELPRESSURE_HPA (1013.25)

Adafruit_BME280 bme; // I2C

void setup() {
  Serial.begin(115200);
  delay(500);                    // a delay here otherwise next line whas not recieved by terminal==to fast???
  Serial.println("BME280 test");

  bool status;

  // default settings
  // (you can also pass in a Wire library object like &Wire2)
  status = bme.begin(0x76);
  if (!status) {
    Serial.println("Could not find a valid BME280 sensor, check wiring!");
    while (1);
  }

  Serial.println("-- Default Test --");

  Serial.println();
}

void loop() { 
  printValues();
  delay(1000);
}

void printValues() {
  Serial.print("Temperature = ");
  Serial.print(bme.readTemperature());
  Serial.println(" *C");

  // Convert temperature to Fahrenheit
  /*Serial.print("Temperature = ");
  Serial.print(1.8 * bme.readTemperature() + 32);
  Serial.println(" *F");*/

  Serial.print("Pressure = ");
  Serial.print(bme.readPressure() / 100.0F);
  Serial.println(" hPa");

  Serial.print("Approx. Altitude = ");
  Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
  Serial.println(" m");

  Serial.print("Humidity = ");
  Serial.print(bme.readHumidity());
  Serial.println(" %");

  Serial.println();
}

LDR adjust background TFT Brightness by ambient light arduino ldr module KY-018                                                  

// ESP32 LDR test should work 
// https://oshwlab.com/l.dijkman/esp32-dev-kit-38-pin-to-spi-touch-tft
// https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat
// http://www.Arduino.TK

int LDRValue=0;
byte LIGHT_SENSOR = 36; //  GPIO 36 Analog Input

void setup() 
{
  Serial.begin(115200);
  pinMode(LIGHT_SENSOR,INPUT);

}

void loop() 
{
  //Get the ADC values
  LDRValue = analogRead(LIGHT_SENSOR);
  Serial.print(LDRValue);
  Serial.print("     ");
  //Get brightness Percentage
  double lumLevel = (LDRValue / 4095.00);
  Serial.print((lumLevel * 100.00),2);
  Serial.println("%");
  delay(1000);
}

RealTimeClock module  DS3231 (if there is no WiFi NTP time server present)              NTP Time example => https://lastminuteengineers.com/esp32-ntp-server-date-time-tutorial/

         Mine NTP => https://youtu.be/m04PbIkMzjE

OhOh =>  i used SDA wich is Hardware gpio i2c

want to use it for RTC DS3231

solution wire.h =>  softwarei2c on other gpio pins

https://randomnerdtutorials.com/esp32-i2c-communication-arduino-ide/#3

// ESP32 I2C RTC DS3231 realtimeclock test
// sets the time on DS3231 from computer when progam loads
// and print inforation about time and date to serial monitor
// software i2c on other i/o = non hardware i2c
// ART ESP32Thermostat by luberth dijkman
// https://oshwlab.com/l.dijkman/esp32-dev-kit-38-pin-to-spi-touch-tft
// https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat
// http://www.Arduino.TK

#include <Wire.h> 

#define I2C_SDA 33  //gpio33
#define I2C_SCL 32  //gpio32

#include "RTClib.h" // https://github.com/adafruit/RTClib
RTC_DS3231 rtc;     // download zip from above and install library from zip

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

void setup(void) {

  Wire.begin(I2C_SDA, I2C_SCL);

  Serial.begin(115200);

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

  if (rtc.lostPower()) {
    Serial.println("RTC lost power, let's set the time!");
    // When time needs to be set on a new device, or after a power loss, the
    // following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
  }

  // When time needs to be re-set on a previously configured device, the
  // following line sets the RTC to the date & time this sketch was compiled
  // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  // This line sets the RTC with an explicit date & time, for example to set
  // January 21, 2014 at 3am you would call:
  // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
}

void loop () {
    DateTime now = rtc.now();

    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(" (");
    Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
    Serial.print(") ");
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();

    Serial.print("Temperature: ");
    Serial.print(rtc.getTemperature());
    Serial.println(" C");

    Serial.println();
    delay(1000);
}

image from Paul Stofregen

example image

what i want, a board to connect ESP32 to SPI TFT

example image

what i want, a board to connect ESP32 to SPI TFT

image from Paul Stofregen

https://nl.aliexpress.com/item/4000415147087.html 38pin ESP32 dev kit

Can anyone tell me the SKU number for this module => post a comment on the bottom of page?

NOTE: LEFT BOTTOM above V5 is CMD  FLASH / GPIO11 not GND, yep i did it ;-(

NOTE: LEFT BOTTOM above V5 is CMD  FLASH / GPIO11 not GND, yep i did it ;-(

Can anyone tell me the SKU number for this module => post a comment on the bottom of page?

38pin ESP32 dev kit

https://nl.aliexpress.com/item/4000415147087.html

NOTE: LEFT BOTTOM above V5 is CMD  FLASH / GPIO11 not GND, yep i did it ;-(

Can anyone tell me the SKU number for this module => post a comment on the bottom of page?

Think this one has a better pin description not the same PCB placement of components but pinout is the same 

Think this one has a better pin description not the same PCB placement of components but pinout is the same 

a schematic of a ESP32 38pin

https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf

Free Arduino IDE = SourceCode Editor / Compiler / Programmer

https://www.arduino.cc/en/software

My Arduino IDE Settings for this ESP32 38pin  dev kit

Arduino IDE

https://www.arduino.cc/en/software

my arduino ide Settings for this ESP32 38pin dev kit

Next adds ESP8266 and ESP32 boards to the Arduino IDE

File => preferences => aditional board managers

http://arduino.esp8266.com/stable/package_esp8266com_index.json

https://dl.espressif.com/dl/package_esp32_index.json

File => preferences => aditional board managers

http://arduino.esp8266.com/stable/package_esp8266com_index.json

https://dl.espressif.com/dl/package_esp32_index.json

TFT_eSPI library

would like to use the pinout from

https://github.com/Bodmer/TFT_eSPI

like this TFT SPI library much

like the touch calibration process of this library much / perfect

TFT_eSPI ESP32 wroom 32 dev kit 38pin - SPI TFT ST7796 touch  https://github.com/Bodmer/TFT_eSPI touch calibration

To install TFT_eSPI in Arduino IDE

Download the ZIP from  https://github.com/Bodmer/TFT_eSPI and install library from ZIP

Then you have an up to date version

File => Examples => TFT_eSPI       there are a lot off examples to play with

Edit

/home/pi/Arduino/libraries/TFT_eSPI/User_Setup.h   (Path willl be a bit different on a MicroSoft Windows PC)

With a text editor to meet your display and microprocessor

or include the file in arduino IDE as a TAB

Sketch => Add File

and edit the User_Setup.h in Arduino IDE to meet your hardware Specs



*

This is wat your Arduino IDE should look like, Main File with the TAB files

ART_ESP32_Thermostat_7_12_2020_ver2.ino => is the Main File

The other files are included tab files (Should be in the same Directory as Main File)

HOWTO ESP32 to SPI TFT by Xtronical https://www.youtube.com/watch?v=rq5yPJbX_uk

SPI TFT ST7796 touch

Hope i did not make any mistakes but i  Solemnly Swear, sincerely honestly believe ;-) this is my pinout

Some notes on WiFi and analog ports https://microcontrollerslab.com/adc-esp32-measuring-voltage-example/

TABLE data from  LCDWIKI

http://www.lcdwiki.com/3.2inch_SPI_Module_ILI9341_SKU:MSP3218

http://www.lcdwiki.com/3.5inch_SPI_Module_ILI9488_SKU:MSP3520

 http://www.lcdwiki.com/4.0inch_SPI_Module_ST7796

The following is the touch screen signal line wiring,  

some notes on WiFi and analog ports https://microcontrollerslab.com/adc-esp32-measuring-voltage-example/

SD card not used by me

HOWTO ESP32 to SPI TFT by Xtronical https://www.youtube.com/watch?v=rq5yPJbX_uk

Make an LED fade using a PWM signal on the ESP32 => http://techexplorations.com/guides/esp32/begin/pwm/

CUT the 3.3v trace and put  a jumper wire GPIO32 to LED

Possibility to dim the screen during evening/night hours on time => to save energy => Suggestion from  Jo from Belgium

Bright Light up on touch? for ?? time

// ESP32 test SPI TFT backlight PWM brightnes
// PWM = Pulse Width Modulation or pulse-duration modulation
// more or less PWM creates a voltage from 0 to 3.3volt on gpio 32
// But SPI connector LED goes to a transistor on the TFT PCB wich switches the VCC wich i have connected to 5Volt
// https://oshwlab.com/l.dijkman/esp32-dev-kit-38-pin-to-spi-touch-tft
// https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat
// http://www.Arduino.TK

const int ledPin = 32;  // corresponds to GPIO32
                        // connect to LED of SPI TFT display

// setting PWM properties
const int freq = 4000;           // 4khz
const int ledChannel = 1;        // think channel 0 is in use by buzzer
const int resolution = 8;        // 8bit 0 to 255

void setup(){
  // configure LED PWM functionalitites
  ledcSetup(ledChannel, freq, resolution);

  // attach the channel to the GPIO to be controlled
  ledcAttachPin(ledPin, ledChannel);
}

void loop(){
  // increase the LED brightness
  for(int dutyCycle = 0; dutyCycle <= 255; dutyCycle++){
    // changing the LED brightness with PWM
    ledcWrite(ledChannel, dutyCycle);
    delay(15);
  }

  // decrease the LED brightness
  for(int dutyCycle = 255; dutyCycle >= 0; dutyCycle--){
    // changing the LED brightness with PWM
    ledcWrite(ledChannel, dutyCycle);
    delay(15);
  }
}

https://www.youtube.com/user/LuberthDijkman/videos

Arduino Mega Thermostat

The Best Nest Thing. ;-) The Nest Best Thing.

https://youtu.be/lny7J7KXk9w

Arduino Mega Thermostat

The Best Nest Thing. ;-) The Nest Best Thing. https://youtu.be/lny7J7KXk9w

https://github.com/Bodmer/TFT_eSPI/issues/849

Thermostat remote control html web interface test layout

test various various html input elements on different devices

be surprised by the difference

https://jsfiddle.net/luberth/b6y53cn0

https://jsfiddle.net/luberth/b6y53cn0/embedded/result/     Try it on your phone or tablet or pc in differen browsers and be surprised

Thermostat remote control html web interface test layout

test various various html input elements on different devices

be surprised by the difference

https://jsfiddle.net/luberth/b6y53cn0

https://jsfiddle.net/luberth/b6y53cn0/embedded/result/

Do not hardcode WiFi settings

Connect with a Phone to the ESP 32 WiFi  => ART Thermostat AccesPoint (AP)

and Browse to 192.168.4.1

Then you get a html webpage to edit your WiFi RouterName and PassWord settings

Save and the ESP32 connects to your WiFi router local network

Now lookup the designated  ip adress on the touch screen of ART Thermostat

Go with the browser to the ipadres in your local network

And now you can control ART Thermostat from a webpage

If you forward the ip adress in your wifirouter then you can control your ART Thermostat from anywhere in the World

ART is Smart!

WEBCONFIG by Jhon Lassen for ESP8266

liked this one for ESP8266

Has dual mode

AP=access point =direct connection to a phone     and     STA is network mode wifi router connected

it shows STA network ip adres  when in AP=AccessPoint direct connection

and possible to do station/network connnect and accespoint connect

WIFIMANAGER by TZAPU for ESP32 https://youtu.be/m04PbIkMzjE

does not have dual mode AP+STA

does not show ip adress from STA when in AP mode

so whe have to show STA ip adress on touch screen

most people will find it not handy say hard to lookup gadered STA ip adres in wifi router manager

Thermostat Code

more will be comming in the future

https://youtu.be/lny7J7KXk9w

i have to change the code from arduino mega 2560 to ESP32

and also change it for TFT_eSPI graphic library

BUSY WITH THE CONVERSION

ART_ESP32_Thermostat_7_12_2020.zip = https://create.arduino.cc/editor/luberth/5e47cbb4-811d-432f-84ac-8976c56a76c4/preview

A Part of Art => SoftWare & HardWare is described @

https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat

i do not understand how github works but trying

github is great for the software => you can see when a file is changed

github easy 4me to upload new code

https://github.com/ldijkman/ART-ESP32-Touch-TFT-Thermostat

First time EasyEDA.com and JLCPCB.com and LCSC.com == Perfect PCB's!

Latest Video https://www.youtube.com/watch?v=qNYT64CaLEI

green pixels is just for touch testing => to see if touch is at correct location

design is for a smaller screen

// ESP32 I2C RTC DS3231 realtimeclock test

WishList

If for 30 seconds screen not touched => hide the buttons

animate slide / grow screen to full screen = more space for time, date, barometer, humidity

if screen is touched show the buttons again, bit like a menubar on pc_screen hide/show

X V let  color SetPoint temperature. indicate wich mode is active,    eco=green   auto=DutchOrange    normal/continu=gray V

X V Add Cool Mode= iceBlue V

Smooth sharp text font

store / restore  temperture time / week program settings in spifs file system on ESP32

X V time temp week program change times and temp on tft V

Design a case, 3D Printer

Design a PCB with all components on it

DHL Germany is CRAZY

DHL CRAZY TRACKING  JLPCB Shenzhen china to  hongkong to leipzig to keulen to dusseldorf to leipzig to keulen to dusseldorf to ???

DHL CRAZY TRACKING  JLPCB Shenzhen china to  hongkong to leipzig to keulen to dusseldorf to leipzig to keulen to dusseldorf to ???

**   my first attempt => Wow! Try next inbrowser PCB Designer

https://easyeda.com/editor#id=|476629139fe1472188edc581f8542dac|652cf902783e44f0b4ff0ab338b8ae5d

Learn tutorial easyeda videos

https://youtu.be/MsuR6W-jN5M?list=PLbKMtvtYbdPMZfzGuVTdc0MWKrFvU4nsut**

Time for a break, Time for a drink...

***                            https://www.paypal.com/pools/c/8amUN5rgb9***

Where is the ladder   https://youtu.be/XzO9jGPtrhc


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