Simple Magnet Polarity Detector Circuit using Hall Effect Sensor is important for things like motor control, measuring magnetic field and for teaching. Also, 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 […]
Hobby Circuits
Build Your Own Door Knob Touch Alarm Circuit
Todays time safety is very important, so this Build Your Own Door Knob Touch Alarm Circuit can help protect home and office. Also, this small project is Door Knob Touch Alarm using 555 IC, which can sense when someone touches the door knob. Furthermore, if someone touches then alarm makes loud sound and it scares […]
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 […]
Reverse Car Parking Sensor Circuit using IC LM358
Modern cars must have reverse parking sensors, as these give sound and light signals to help driver avoid crash when going back. Sensors use infrared or ultrasonic to find objects behind car. Also, this article for Reverse Car Parking Sensor Circuit using IC LM358 op-amp is to make simple reverse parking sensor circuit. Here, the […]
Digital Code Lock Circuit using Arduino
Nowadays, security is important everywhere in the world, and it becomes even more critical in sensitive or restricted areas. Therefore, this Digital Code Lock Circuit using Arduino helps improve security by providing controlled access. Also, it use Arduino, small computer to make simple lock and with Arduino UNO, keypad, buzzer, LCD (16×2), BC547 transistor and […]
Simple Heartbeat Monitor Circuit using Arduino
In this post we will show how to make Simple Heartbeat Monitor Circuit using Arduino. First, when we put finger on sensor it count heartbeats per minute and this is important because heartbeat tells doctor about our health. Here, we use Arduino UNO, LCD screen, two buttons, one resistor and heartbeat sensor to build it; […]