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This post shows how to build a real time clock using ESP8266 (ESP-01) module, DS3231 RTC or DS1307 RTC and 16×2 LCD. Time and date are displayed on the 16×2 LCD screen and they (time and date) can be set with 2 push buttons. As known the ESP-01 module has…
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In this blog there are many topics talk about the DHT11 and DHT22 sensors and how to use them with different types of microcontrollers including the Arduino. This topic shows how use the DHT11 and the DHT22 relative humidity and temperature sensors with…
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The ESP8266 ESP-01 module has 8 pins only of which 4 can be used as I/O (input/output) pins (GPIO0, GPIO2, RX and TX), this number of I/O pins is not enough to run a 16×2 LCD screen which requires at least 6 pins. The solution is to add an I/O expander…
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This post shows a quick guide to program ESP8266 WiFi module with Arduino UNO board and how to use Arduino IDE software in order to write codes for this module. The ESP8266 board contain the microcontroller ESP8266EX (32-bit microcontroller)…
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Generally to be able to use an LCD display we need at least 6 free pins, but the number of pins can be minimized with the help of external components like PCF8574 (or PCF8574A) I2C I/O expander, that’s allows us to use only 2 pins from our…
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There are different ways to build an Arduino based real time clock, one of the ways is using a real time clock chip (like: DS1302, DS1307, DS3231 …) and another way is by using a GPS module. The GPS based clock receives time from satellites and…
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This post shows how to connect the Arduino with GPS module in order to receive data from satellites where the GPS module used in this project is u-blox NEO-6M (other modules also should work). With the NEO-6M GPS module we can measure position (latitude,…
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In the last post I built an Arduino based real time clock using DS1307 RTC and SSD1306 OLED and in this project I’m going to show how to build a real time clock with temperature monitor using Arduino, DS3231 RTC chip and SSD1306 OLED (128×64 pixel). The…
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This post shows how to build a real time clock using Arduino, DS1307 RTC and SSD1306 OLED. The DS1307 RTC is used as a real time clock chip which keeps the time running even if the main power supply is off (with the help of a battery), time and date are…
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This post shows how to build a temperature and relative humidity measurements station using Arduino and DHT11/DHT22 sensor where the measured values of the temperature and the humidity are displayed on 128×64 OLED screen with SSD1306 driver.…
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