EMFs (electromagnetic fields) are invisible energy from electricity and lights which are natural and man made. Some EMFs are safe and some are bad if used too much for long time. We can use simple Arduino tool to find EMFs around us. Moving electric charge make EMFs. EMFs have two parts: electric field and magnetic […]
Sensors and Detectors
Simple Magnet Polarity Detector Circuit using Hall Effect Sensor
Simple Magnet Polarity Detector Circuit using Hall Effect Sensor is important for things like motor control, measuring magnetic field and for teaching. This article show how to use APX9141 Hall Effect sensor to make easy and working magnet polarity detector. Red and blue LEDs show magnet north and south poles and it gives simple visual […]
Simple Micro SD Card Data Logging Circuit with Arduino UNO
Accurate data logging is very important in electronics and data work. This project for Simple Micro SD Card Data Logging Circuit with Arduino UNO show how to use micro SD card, IC 7809 and LM35 sensor to make simple data logger. It saves temperature data to SD card and later we can check data for […]
Metal Detector Circuit using Arduino
Metal detector uses electric field to find metal near it. Making Metal Detector Circuit using Arduino is fun for electronics lovers. We can make it using Arduino, CS209A chip, LEDs, buzzer and some other parts. LED and buzzer will show when metal is close. This project use CS209A chip with Arduino. CS209A is good chip […]
Building a Smart Pet Feeder Circuit using Arduino
Feeding pets can be easy and on time using automatic system. This project for Building a Smart Pet Feeder Circuit using Arduino and other parts like IC 7809, SG90 servo motor and HC-SR04 sensor to make simple pet feeder. Feeder work with distance sensor to give food so pet can eat on time without people […]
Human Presence and Motion Sensor Circuit using Arduino
This project uses electronic and integrated technology for energy saving, smart places and safety system. Main idea is to sense human presence and movement. We use mix of sensors and microcontroller to do this work. In this tutorial for Human Presence and Motion Sensor Circuit using Arduino we have used STHS34PF80 sensor, IC 7809 and […]