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![How to make a Simple Fire Alarm Circuit](https://circuitdiagrams.in/wp-content/uploads/2020/05/Untitled-1-e1608376213230.jpg)
Electro Gadget
Simple Fire Alarm Circuit Using Thermistor And LM358
![Arduino Digital Tachometer](https://circuitdiagrams.in/wp-content/uploads/2020/07/Tachometer-1-e1608375869715.png)
Electro Gadget
Digital Tachometer Using Arduino IR Sensor
![Led Chaser Using 555 Timer and 4017](https://circuitdiagrams.in/wp-content/uploads/2020/07/Led-Chaser-1-e1608376050451.png)
Electro Gadget
LED Chaser using 555 Timer and 4017 Counter
![Ultrasonic-Sound-Generator](https://circuitdiagrams.in/wp-content/uploads/2021/07/Ultrasonic-Sound-Generator.jpg)
Electro Gadget
How To Make Ultrasonic Sound Generator Using 555
![Infrared Sensor Using LM358](https://circuitdiagrams.in/wp-content/uploads/2022/08/InfraredSensorUsingLM358-scaled.jpg)
Electro Gadget
Infrared Sensor / Obstacle Detector Circuit Using LM358
home automation
![WiFi Smart Plug](https://circuitdiagrams.in/wp-content/uploads/2021/11/WiFiSmartPlug.jpg)
Electro Gadget
ESP8266 WiFi Smart Plug Using NodeMCU
![](https://circuitdiagrams.in/wp-content/uploads/2021/10/4-ChannelIRRemoteControlSystem.jpg)
Electro Gadget
4-Channel IR Remote Control System Using ATtiny85
Arduino project
![Stereo MP3 Player Using Using Arduino & DFPlayer Thumbnail](https://circuitdiagrams.in/wp-content/uploads/2022/12/StereoMP3PlayerUsingUsingArduino26DFPlayerThumbnail-1.jpg)
Electro Gadget
Stereo MP3 Player System Using Arduino & DFPlayer
![Digital RPM Meter Using Arduino](https://circuitdiagrams.in/wp-content/uploads/2023/08/Digital-RPM-Meter-Using-Arduino.jpg)
Electro Gadget
Digital RPM Meter Using IR Sensor With Arduino
![](https://circuitdiagrams.in/wp-content/uploads/2022/11/SmartElectronicVotingMachineUsingArduino-scaled.jpg)
Electro Gadget
Smart Electronic Voting Machine Using Arduino
![Arduino Based Inductance Meter](https://circuitdiagrams.in/wp-content/uploads/2023/01/ArduinoBasedInductanceMeter.jpg)
Electro Gadget
Arduino Based Inductance Meter
![](https://circuitdiagrams.in/wp-content/uploads/2022/11/ESP32-with-HC-SR04-Ultrasonic-Sensor-Circuit.jpg)
Electro Gadget