Sometimes we need an indicator that indicating status of our appliance / system. For some reason the visual indicators can’t be used, for e...
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Arduino Motion Detector using PIR Sensor
PIR (Passive Infra Red) sensor is used to detect object’s movement in front of it. PIR sensor is made from pyroelectric sensors that can de...
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How to Send SMS with SIM800L and Arduino
SIM800L is a cheap GSM/GPRS modem that works in four frequency bands, i.e. 850, 900, 1800 and 1900 MHz. Its GPRS technology adopts multi sl...
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How to Configure Arduino Analog Pin as Digital Pin
Analog pins on Arduino board are used as analog input pin as default configuration. In these pin you can detect analog voltage from 0 - 5V ...
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How to Deal with I2C LCD 16x2 and Arduino
I 2 C LCD 16x2 module is controller module for LCD 16x2 which is dealing with I 2 C/IIC ( Inter Integrated Circuit ) synchronous serial p...
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Get Temperature from RTC DS3231/DS3232 Using Arduino
RTC DS3231/DS3232 has additional feature to get temperature instead of its main feature, get precision time data. However, the temperature...
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How to Setting Time RTC DS3231 / DS3232 with Arduino
If you buy new DS3231/DS3232 RTC module, usually the time stored in internal memory (SRAM) is the manufacturer's default time (US time)...
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How to Handle RTC DS3231/DS3232 with Arduino
An RTC ( Real Time Clock ) IC is designed to provide precise time information ranging from seconds, minutes, hours, dates, days, month to y...
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Detecting AC Voltage Using Arduino
AC voltage detector is used as a sensor whether there is a voltage of 220 VAC coming into the circuit (just for detecting, not for measurin...
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Simple AC Voltage Detector Using Opto Coupler H11AA1
If you're looking for AC Voltage Detector , maybe optocoupler H11AA1 could be a simple solution. The circuit is fairly simple, fewer...
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Build Simple Digital Thermometer Using Arduino and LM35
Build a simple digital thermometer with Arduino is fairly easy. You only need to buy a cheap LM35 temperature sensor and upload sketch (fir...
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Displays Hello World in LCD 16x2 Using Arduino
LCD ( Liquid Crystal Display ) is usually used as a simple display output on a microcontroller system. An LCD can display alphanumeric cha...
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