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![](https://circuitdiagrams.in/wp-content/uploads/2022/11/ESP32-with-HC-SR04-Ultrasonic-Sensor-Circuit.jpg)
Electro Gadget
Interface HC-SR04 Ultrasonic Sensor With ESP32
![AC Dimmer Circuit](https://circuitdiagrams.in/wp-content/uploads/2022/11/ACDimmerCircuit-scaled.jpg)
Electro Gadget
AC Dimmer Circuit Using TRIAC
![Battery Level Indicator System](https://circuitdiagrams.in/wp-content/uploads/2022/10/BatteryLevelIndicatorSystem-scaled.jpg)
Electro Gadget
Battery Level Indicator System Using LM3914
![](https://circuitdiagrams.in/wp-content/uploads/2022/10/ArduinoCalculator-scaled.jpg)
Electro Gadget
Arduino Calculator Using 4×4 Keypad
![12V Automatic Battery Charger](https://circuitdiagrams.in/wp-content/uploads/2021/07/12V-Automatic-Battery-Charger-1.jpg)
Electro Gadget
1.2V-12V Variable Automatic Battery Charger Using Relay
![Sound Sensor](https://circuitdiagrams.in/wp-content/uploads/2022/10/SoundSensor.jpg)
Electro Gadget
Sound Sensor Module Using LM393
home automation
![](https://circuitdiagrams.in/wp-content/uploads/2024/08/smartiotenergymeterusingesp321528757904083105362.jpg)
Electro Gadget
IoT Smart Energy Meter Using ESP32 and Blynk 2.0
![Smart Motion Sensing Camera FTDI Module](https://circuitdiagrams.in/wp-content/uploads/2023/02/Smart-Motion-Sensing-Camera-FTDI-Module.jpg)
Electro Gadget
IoT based Smart Motion Sensing Camera
![Interface Different Sensors With Single ESP8266](https://circuitdiagrams.in/wp-content/uploads/2023/02/InterfaceDifferentSensorsWithSingleESP8266-1.jpg)
Electro Gadget
Interface Different Sensors With Single ESP8266 NodeMCU
![](https://circuitdiagrams.in/wp-content/uploads/2022/07/BluetoothHomeAutomationSystem.jpg)
Electro Gadget
Home Automation System Using Arduino And HC-05
![Controlling Appliances with ESP32 and MQTT Protocol](https://circuitdiagrams.in/wp-content/uploads/2022/03/Controlling-Appliances-with-ESP32-and-MQTT-Protocol.png)
Electro Gadget
Controlling Appliances with ESP32 and MQTT Protocol
![Tasmota Home Automation System Using ESP8266](https://circuitdiagrams.in/wp-content/uploads/2022/03/IMG_20220303_125009-scaled.jpg)
Electro Gadget
Tasmota Home Automation System Using ESP8266
Arduino project
![Audio Spectrum Visualizer](https://circuitdiagrams.in/wp-content/uploads/2023/03/Audio-Spectrum-Visualizer.jpg)
Electro Gadget
Audio Spectrum Visualizer Using Arduino & Matrix Display
![Digital Watch](https://circuitdiagrams.in/wp-content/uploads/2023/01/DigitalWatch.jpg)
Electro Gadget
Digital Watch Using ATtiny85 & OLED Display
![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