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/***************************************************************************************************/
/*
This is an Arduino library for Aosong ASAIR AHT10, AHT15 Digital Humidity & Temperature Sensor
written by : enjoyneering79
sourse code: https://github.com/enjoyneering/
This chip uses I2C bus to communicate, specials pins are required to interface
Board: SDA SCL Level
Uno, Mini, Pro, ATmega168, ATmega328..... A4 A5 5v
Mega2560................................. 20 21 5v
Due, SAM3X8E............................. 20 21 3.3v
Leonardo, Micro, ATmega32U4.............. 2 3 5v
Digistump, Trinket, ATtiny85............. 0/physical pin no.5 2/physical pin no.7 5v
Blue Pill, STM32F103xxxx boards.......... PB7 PB6 3.3v/5v
ESP8266 ESP-01........................... GPIO0/D5 GPIO2/D3 3.3v/5v
NodeMCU 1.0, WeMos D1 Mini............... GPIO4/D2 GPIO5/D1 3.3v/5v
ESP32.................................... GPIO21/D21 GPIO22/D22 3.3v
Frameworks & Libraries:
ATtiny Core - https://github.com/SpenceKonde/ATTinyCore
ESP32 Core - https://github.com/espressif/arduino-esp32
ESP8266 Core - https://github.com/esp8266/Arduino
STM32 Core - https://github.com/stm32duino/Arduino_Core_STM32
- https://github.com/rogerclarkmelbourne/Arduino_STM32
GNU GPL license, all text above must be included in any redistribution,
see link for details - https://www.gnu.org/licenses/licenses.html
*/
/***************************************************************************************************/
#include <Wire.h>
#include <AHT10.h>
#include <LiquidCrystal_I2C.h> //https://github.com/enjoyneering/LiquidCrystal_I2C
#define LCD_ROWS 4 //qnt. of lcd rows
#define LCD_COLUMNS 20 //qnt. of lcd columns
#define DEGREE_SYMBOL 0xDF //degree symbol from LCD ROM
#define LED 1 //connect led to ATtiny85 pin physical pin no.6 in series with 470 Ohm resistor
float valueTH = 0;
const uint8_t temperature_icon[8] PROGMEM = {0x04, 0x0A, 0x0A, 0x0E, 0x0E, 0x1F, 0x1F, 0x0E}; //PROGMEM saves variable to flash & keeps dynamic memory free
const uint8_t humidity_icon[8] PROGMEM = {0x04, 0x0E, 0x0E, 0x1F, 0x1F, 0x1F, 0x0E, 0x00};
const uint8_t plus_minus_icon[8] PROGMEM = {0x00, 0x04, 0x0E, 0x04, 0x00, 0x0E, 0x00, 0x00};
AHT10 myAHT10(AHT10_ADDRESS_0X38);
LiquidCrystal_I2C lcd(PCF8574_ADDR_A21_A11_A01, 4, 5, 6, 16, 11, 12, 13, 14, POSITIVE);
void setup()
{
pinMode(LED, OUTPUT);
/* LCD connection check */
while (lcd.begin(LCD_COLUMNS, LCD_ROWS) != true) //20 colums, 4 rows
{
digitalWrite(LED, HIGH);
delay(500);
digitalWrite(LED, LOW);
delay(500);
}
/* AHT10 connection check */
while (myAHT10.begin() != true)
{
lcd.print(F("AHT10 error")); //(F()) saves string to flash & keeps dynamic memory free
delay(5000);
}
lcd.clear();
//Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz
lcd.print(F("AHT10 OK"));
delay(2000);
lcd.clear();
/* load custom symbol to CGRAM */
lcd.createChar(0, temperature_icon);
lcd.createChar(1, humidity_icon);
lcd.createChar(2, plus_minus_icon);
/* prints static text */
lcd.setCursor(0, 0);
lcd.write(0); //print custom tempereture symbol from CGRAM
lcd.setCursor(0, 1); //set 1-st colum & 2-nd row, first colum & row started at zero
lcd.write(1); //print custom humidity symbol from CGRAM
}
void loop()
{
/* prints dynamic temperature data */
lcd.setCursor(1, 0);
valueTH = myAHT10.readTemperature(); //read 6 bytes over I2C
if (valueTH != AHT10_ERROR)
{
lcd.print(myAHT10.readTemperature());
lcd.write(2); //print custom plus/minus symbol
lcd.print(F("0.3"));
lcd.write(DEGREE_SYMBOL); //print degree symbol from the LCD ROM
lcd.print(F("C "));
}
else
{
lcd.print(F("i2c error "));
}
/* prints dynamic humidity data */
lcd.setCursor(1, 1);
valueTH = myAHT10.readHumidity(); //read 6 bytes over I2C
if (valueTH != AHT10_ERROR)
{
lcd.print(valueTH);
lcd.write(2);
lcd.print(F("2% "));
}
else
{
lcd.print(F("i2c error "));
}
delay(10000); //recomended polling frequency 8sec..30sec
}

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/***************************************************************************************************/
/*
This is an Arduino library for Aosong ASAIR AHT10, AHT15 Digital Humidity & Temperature Sensor
written by : enjoyneering79
sourse code: https://github.com/enjoyneering/
This chip uses I2C bus to communicate, specials pins are required to interface
Board: SDA SCL Level
Uno, Mini, Pro, ATmega168, ATmega328..... A4 A5 5v
Mega2560................................. 20 21 5v
Due, SAM3X8E............................. 20 21 3.3v
Leonardo, Micro, ATmega32U4.............. 2 3 5v
Digistump, Trinket, ATtiny85............. 0/physical pin no.5 2/physical pin no.7 5v
Blue Pill, STM32F103xxxx boards.......... PB7 PB6 3.3v/5v
ESP8266 ESP-01........................... GPIO0/D5 GPIO2/D3 3.3v/5v
NodeMCU 1.0, WeMos D1 Mini............... GPIO4/D2 GPIO5/D1 3.3v/5v
ESP32.................................... GPIO21/D21 GPIO22/D22 3.3v
Frameworks & Libraries:
ATtiny Core - https://github.com/SpenceKonde/ATTinyCore
ESP32 Core - https://github.com/espressif/arduino-esp32
ESP8266 Core - https://github.com/esp8266/Arduino
STM32 Core - https://github.com/stm32duino/Arduino_Core_STM32
- https://github.com/rogerclarkmelbourne/Arduino_STM32
GNU GPL license, all text above must be included in any redistribution,
see link for details - https://www.gnu.org/licenses/licenses.html
*/
/***************************************************************************************************/
#include <Wire.h>
#include <AHT10.h>
#include <LiquidCrystal_I2C.h> //https://github.com/enjoyneering/LiquidCrystal_I2C
#define LCD_ROWS 4 //qnt. of lcd rows
#define LCD_COLUMNS 20 //qnt. of lcd columns
#define DEGREE_SYMBOL 0xDF //degree symbol from LCD ROM
uint8_t readStatus = 0;
const uint8_t temperature_icon[8] PROGMEM = {0x04, 0x0A, 0x0A, 0x0E, 0x0E, 0x1F, 0x1F, 0x0E}; //PROGMEM saves variable to flash & keeps dynamic memory free
const uint8_t humidity_icon[8] PROGMEM = {0x04, 0x0E, 0x0E, 0x1F, 0x1F, 0x1F, 0x0E, 0x00};
const uint8_t plus_minus_icon[8] PROGMEM = {0x00, 0x04, 0x0E, 0x04, 0x00, 0x0E, 0x00, 0x00};
AHT10 myAHT10(AHT10_ADDRESS_0X38);
LiquidCrystal_I2C lcd(PCF8574_ADDR_A21_A11_A01, 4, 5, 6, 16, 11, 12, 13, 14, POSITIVE);
void setup()
{
Serial.begin(115200);
Serial.println();
/* LCD connection check */
while (lcd.begin(LCD_COLUMNS, LCD_ROWS) != true) //20 colums, 4 rows
{
Serial.println(F("PCF8574 is not connected or lcd pins declaration is wrong. Only pins numbers: 4,5,6,16,11,12,13,14 are legal."));
delay(5000);
}
/* AHT10 connection check */
while (myAHT10.begin() != true)
{
lcd.print(F("AHT10 Error")); //(F()) saves string to flash & keeps dynamic memory free
Serial.println(F("AHT10 not connected or fail to load calibration coefficient"));
delay(5000);
}
//Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz
lcd.clear();
lcd.print(F("AHT10 OK"));
delay(2000);
lcd.clear();
/* load custom symbol to CGRAM */
lcd.createChar(0, temperature_icon);
lcd.createChar(1, humidity_icon);
lcd.createChar(2, plus_minus_icon);
/* prints static text */
lcd.setCursor(0, 0);
lcd.write(0); //print custom tempereture symbol from CGRAM
lcd.setCursor(0, 1); //set 1-st colum & 2-nd row, first colum & row started at zero
lcd.write(1); //print custom humidity symbol from CGRAM
}
void loop()
{
readStatus = myAHT10.readRawData(); //read 6 bytes from AHT10 over I2C
/* prints dynamic temperature data */
lcd.setCursor(1, 0);
if (readStatus != AHT10_ERROR)
{
lcd.print(myAHT10.readTemperature(AHT10_USE_READ_DATA)); //use previously read 6 bytes
lcd.write(2); //print custom plus/minus symbol
lcd.print(F("0.3"));
lcd.write(DEGREE_SYMBOL); //print degree symbol from the LCD ROM
lcd.print(F("C "));
}
else
{
lcd.print(F("i2c error "));
}
/* prints dynamic humidity data */
lcd.setCursor(1, 1);
if (readStatus != AHT10_ERROR)
{
lcd.print(myAHT10.readHumidity(AHT10_USE_READ_DATA)); //use previously read 6 bytes
lcd.write(2);
lcd.print(F("2% "));
}
else
{
lcd.print(F("i2c error "));
}
delay(10000); //recomended polling frequency 8sec..30sec
}

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/***************************************************************************************************/
/*
This is an Arduino library for Aosong ASAIR AHT10, AHT15 Digital Humidity & Temperature Sensor
written by : enjoyneering79
sourse code: https://github.com/enjoyneering/
This chip uses I2C bus to communicate, specials pins are required to interface
Board: SDA SCL Level
Uno, Mini, Pro, ATmega168, ATmega328..... A4 A5 5v
Mega2560................................. 20 21 5v
Due, SAM3X8E............................. 20 21 3.3v
Leonardo, Micro, ATmega32U4.............. 2 3 5v
Digistump, Trinket, ATtiny85............. 0/physical pin no.5 2/physical pin no.7 5v
Blue Pill, STM32F103xxxx boards.......... PB7 PB6 3.3v/5v
ESP8266 ESP-01........................... GPIO0/D5 GPIO2/D3 3.3v/5v
NodeMCU 1.0, WeMos D1 Mini............... GPIO4/D2 GPIO5/D1 3.3v/5v
ESP32.................................... GPIO21/D21 GPIO22/D22 3.3v
Frameworks & Libraries:
ATtiny Core - https://github.com/SpenceKonde/ATTinyCore
ESP32 Core - https://github.com/espressif/arduino-esp32
ESP8266 Core - https://github.com/esp8266/Arduino
STM32 Core - https://github.com/stm32duino/Arduino_Core_STM32
- https://github.com/rogerclarkmelbourne/Arduino_STM32
GNU GPL license, all text above must be included in any redistribution,
see link for details - https://www.gnu.org/licenses/licenses.html
*/
/***************************************************************************************************/
#include <AHT10.h>
#include <Wire.h>
uint8_t readStatus = 0;
AHT10 myAHT10(AHT10_ADDRESS_0X38);
void setup()
{
Serial.begin(115200);
Serial.println();
while (myAHT10.begin() != true)
{
Serial.println(F("AHT10 not connected or fail to load calibration coefficient")); //(F()) save string to flash & keeps dynamic memory free
delay(5000);
}
Serial.println(F("AHT10 OK"));
//Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz
}
void loop()
{
/* DEMO - 1, every temperature or humidity call will read 6 bytes over I2C, total 12 bytes */
Serial.println(F("DEMO 1: read 12-bytes, show 255 if communication error is occurred"));
Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature()); Serial.println(F(" +-0.3C")); //by default "AHT10_FORCE_READ_DATA"
Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity()); Serial.println(F(" +-2%")); //by default "AHT10_FORCE_READ_DATA"
/* DEMO - 2, temperature call will read 6 bytes via I2C, humidity will use same 6 bytes */
Serial.println(F("DEMO 2: read 6 byte, show 255 if communication error is occurred"));
Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature(AHT10_FORCE_READ_DATA)); Serial.println(F(" +-0.3C"));
Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%"));
/* DEMO - 3, same as demo2 but different call procedure */
Serial.println(F("DEMO 3: read 6-bytes, show 255 if communication error is occurred"));
readStatus = myAHT10.readRawData(); //read 6 bytes from AHT10 over I2C
if (readStatus != AHT10_ERROR)
{
Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature(AHT10_USE_READ_DATA)); Serial.println(F(" +-0.3C"));
Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%"));
}
else
{
Serial.print(F("Failed to read - reset: "));
Serial.println(myAHT10.softReset()); //reset 1-success, 0-failed
}
delay(10000); //recomended polling frequency 8sec..30sec
}

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/***************************************************************************************************/
/*
This is an Arduino library for Aosong ASAIR AHT10, AHT15 Digital Humidity & Temperature Sensor
written by : enjoyneering79
sourse code: https://github.com/enjoyneering/
This chip uses I2C bus to communicate, specials pins are required to interface
Board: SDA SCL Level
Uno, Mini, Pro, ATmega168, ATmega328..... A4 A5 5v
Mega2560................................. 20 21 5v
Due, SAM3X8E............................. 20 21 3.3v
Leonardo, Micro, ATmega32U4.............. 2 3 5v
Digistump, Trinket, ATtiny85............. 0/physical pin no.5 2/physical pin no.7 5v
Blue Pill, STM32F103xxxx boards.......... PB7 PB6 3.3v/5v
ESP8266 ESP-01........................... GPIO0/D5 GPIO2/D3 3.3v/5v
NodeMCU 1.0, WeMos D1 Mini............... GPIO4/D2 GPIO5/D1 3.3v/5v
ESP32.................................... GPIO21/D21 GPIO22/D22 3.3v
Frameworks & Libraries:
ATtiny Core - https://github.com/SpenceKonde/ATTinyCore
ESP32 Core - https://github.com/espressif/arduino-esp32
ESP8266 Core - https://github.com/esp8266/Arduino
STM32 Core - https://github.com/stm32duino/Arduino_Core_STM32
- https://github.com/rogerclarkmelbourne/Arduino_STM32
GNU GPL license, all text above must be included in any redistribution,
see link for details - https://www.gnu.org/licenses/licenses.html
*/
/***************************************************************************************************/
#include <Wire.h> //use bug free i2c driver https://github.com/enjoyneering/ESP8266-I2C-Driver
#include <AHT10.h>
#include <LiquidCrystal_I2C.h> //https://github.com/enjoyneering/LiquidCrystal_I2C
#include <ESP8266WiFi.h>
#define LCD_ROWS 4 //qnt. of LCD rows
#define LCD_COLUMNS 20 //qnt. of LCD columns
#define DEGREE_SYMBOL 0xDF //degree symbol from LCD ROM
float valueTH = 0;
const uint8_t temperature_icon[8] PROGMEM = {0x04, 0x0A, 0x0A, 0x0A, 0x0A, 0x1F, 0x1F, 0x0E}; //PROGMEM saves variable to flash & keeps dynamic memory free
const uint8_t humidity_icon[8] PROGMEM = {0x04, 0x0E, 0x0E, 0x1F, 0x1F, 0x1F, 0x0E, 0x00};
const uint8_t plus_minus_icon[8] PROGMEM = {0x00, 0x04, 0x0E, 0x04, 0x00, 0x0E, 0x00, 0x00};
AHT10 myAHT10(AHT10_ADDRESS_0X38);
LiquidCrystal_I2C lcd(PCF8574_ADDR_A21_A11_A01, 4, 5, 6, 16, 11, 12, 13, 14, POSITIVE);
void setup()
{
WiFi.persistent(false); //disable saving wifi config into SDK flash area
WiFi.forceSleepBegin(); //disable AP & station by calling "WiFi.mode(WIFI_OFF)" & put modem to sleep
Serial.begin(115200);
/* LCD connection check */
while (lcd.begin(LCD_COLUMNS, LCD_ROWS, LCD_5x8DOTS, SDA, SCL) != true) //20 colums, 4 rows, 5x8 pixels char size
{
Serial.println(F("PCF8574 is not connected or lcd pins declaration is wrong. Only pins numbers: 4,5,6,16,11,12,13,14 are legal."));
delay(5000);
}
lcd.print(F("PCF8574 is OK")); //(F()) saves string to flash & keeps dynamic memory free
delay(1000);
lcd.clear();
/* AHT10 connection check */
while (myAHT10.begin(SDA, SCL) != true)
{
lcd.print(F("AHT10 Error"));
Serial.println(F("AHT10 not connected or fail to load calibration coefficient"));
delay(5000);
}
//Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz
//Wire.setClockStretchLimit(10000); //experimental I2C clock stretch intervals!, default 230usec
lcd.clear();
lcd.print(F("AHT10 OK"));
delay(2000);
lcd.clear();
/* load custom symbol to CGRAM */
lcd.createChar(0, temperature_icon);
lcd.createChar(1, humidity_icon);
lcd.createChar(2, plus_minus_icon);
/* prints static text */
lcd.setCursor(0, 0); //set 1-st colum & 1-st row
lcd.write(0); //print custom tempereture symbol from CGRAM
lcd.setCursor(0, 1);
lcd.write(1);
}
void loop()
{
/* prints dynamic temperature data */
lcd.setCursor(1, 0);
valueTH = myAHT10.readTemperature(AHT10_FORCE_READ_DATA); //read 6-bytes over I2C
if (valueTH != AHT10_ERROR) lcd.print(valueTH);
else lcd.print(F("xxx"));
lcd.write(2); //print custom plus/minus symbol
lcd.print(F("0.3"));
lcd.write(DEGREE_SYMBOL); //print degree symbol from the LCD ROM
lcd.print(F("C "));
/* prints dynamic humidity data */
lcd.setCursor(1, 1);
valueTH = myAHT10.readHumidity(AHT10_USE_READ_DATA); //use same 6-bytes
if (valueTH != AHT10_ERROR) lcd.print(valueTH);
else lcd.print(F("xxx"));
lcd.write(2);
lcd.print(F("2% "));
delay(10000); //recomended polling frequency 8sec..30sec
}

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/***************************************************************************************************/
/*
This is an Arduino library for Aosong ASAIR AHT20 Digital Humidity & Temperature Sensor
written by : enjoyneering79
sourse code: https://github.com/enjoyneering/
This chip uses I2C bus to communicate, specials pins are required to interface
Board: SDA SCL Level
Uno, Mini, Pro, ATmega168, ATmega328..... A4 A5 5v
Mega2560................................. 20 21 5v
Due, SAM3X8E............................. 20 21 3.3v
Leonardo, Micro, ATmega32U4.............. 2 3 5v
Digistump, Trinket, ATtiny85............. 0/physical pin no.5 2/physical pin no.7 5v
Blue Pill, STM32F103xxxx boards.......... PB7 PB6 3.3v/5v
ESP8266 ESP-01........................... GPIO0/D5 GPIO2/D3 3.3v/5v
NodeMCU 1.0, WeMos D1 Mini............... GPIO4/D2 GPIO5/D1 3.3v/5v
ESP32.................................... GPIO21/D21 GPIO22/D22 3.3v
Frameworks & Libraries:
ATtiny Core - https://github.com/SpenceKonde/ATTinyCore
ESP32 Core - https://github.com/espressif/arduino-esp32
ESP8266 Core - https://github.com/esp8266/Arduino
STM32 Core - https://github.com/stm32duino/Arduino_Core_STM32
- https://github.com/rogerclarkmelbourne/Arduino_STM32
GNU GPL license, all text above must be included in any redistribution,
see link for details - https://www.gnu.org/licenses/licenses.html
*/
/***************************************************************************************************/
#include <AHT10.h>
#include <Wire.h>
uint8_t readStatus = 0;
AHT10 myAHT20(AHT10_ADDRESS_0X38, AHT20_SENSOR);
void setup()
{
Serial.begin(115200);
Serial.println();
while (myAHT20.begin() != true)
{
Serial.println(F("AHT20 not connected or fail to load calibration coefficient")); //(F()) save string to flash & keeps dynamic memory free
delay(5000);
}
Serial.println(F("AHT20 OK"));
//Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz
}
void loop()
{
/* DEMO - 1, every temperature or humidity call will read 6 bytes over I2C, total 12 bytes */
Serial.println(F("DEMO 1: read 12-bytes, show 255 if communication error is occurred"));
Serial.print(F("Temperature: ")); Serial.print(myAHT20.readTemperature()); Serial.println(F(" +-0.3C")); //by default "AHT10_FORCE_READ_DATA"
Serial.print(F("Humidity...: ")); Serial.print(myAHT20.readHumidity()); Serial.println(F(" +-2%")); //by default "AHT10_FORCE_READ_DATA"
/* DEMO - 2, temperature call will read 6 bytes via I2C, humidity will use same 6 bytes */
Serial.println(F("DEMO 2: read 6 byte, show 255 if communication error is occurred"));
Serial.print(F("Temperature: ")); Serial.print(myAHT20.readTemperature(AHT10_FORCE_READ_DATA)); Serial.println(F(" +-0.3C"));
Serial.print(F("Humidity...: ")); Serial.print(myAHT20.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%"));
/* DEMO - 3, same as demo2 but different call procedure */
Serial.println(F("DEMO 3: read 6-bytes, show 255 if communication error is occurred"));
readStatus = myAHT20.readRawData(); //read 6 bytes from AHT10 over I2C
if (readStatus != AHT10_ERROR)
{
Serial.print(F("Temperature: ")); Serial.print(myAHT20.readTemperature(AHT10_USE_READ_DATA)); Serial.println(F(" +-0.3C"));
Serial.print(F("Humidity...: ")); Serial.print(myAHT20.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%"));
}
else
{
Serial.print(F("Failed to read - reset: "));
Serial.println(myAHT20.softReset()); //reset 1-success, 0-failed
}
delay(10000); //recomended polling frequency 8sec..30sec
}