• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Circuit Ideas for You

Get free circuit ideas online.

  • Home
  • Privacy Policy
  • About
Home » Sensors and Detectors » Page 21

Sensors and Detectors

How to Measure Humidity and Temperature using Arduino and DHT11

Last updated on 11 June 2026 by Admin-Lavi Leave a Comment

This project show How to Measure Humidity and Temperature using Arduino and DHT11, as this DHT11 give temperature in Celsius and humidity in percent and then Arduino read sensor and show on LCD. Also, this circuit is good for checking room, garden or weather and furthermore, it is good for learning how sensor and Arduino […]

Filed Under: Arduino Projects, Heater and Temperature Controllers, Hobby Circuits, Sensors and Detectors

Distance Measurement Circuit using Ultrasonic Sensor and Arduino

Last updated on 11 June 2026 by Admin-Lavi Leave a Comment

Ultrasonic sensor use high sound wave to find distance, also it send sound and wait for echo to come back and then it measures time. With Arduino help we can make system to know how far object is, as this project for Distance Measurement Circuit using Ultrasonic Sensor and Arduino shows basic of ultrasonic sensor, […]

Filed Under: Arduino Projects, DIY Projects, Sensors and Detectors

LPG Gas Leakage Detector Circuit using Arduino

Last updated on 11 June 2026 by Admin-Lavi Leave a Comment

LPG Gas Leakage Detector Circuit using Arduino is important safety tool which can stop accidents, as this project uses Arduino to check LPG gas in air. Also, if gas level goes too high then buzzer make sound and LCD show warning, hence, through this circuit people know danger fast. Arduino Code: Code Explanation: Circuit Working: […]

Filed Under: Alarm Circuits, Arduino Projects, DIY Projects, Security and Protection, Sensors and Detectors

Digital Thermometer Circuit using Arduino and IC LM35

Last updated on 11 June 2026 by Admin-Lavi Leave a Comment

This project builds a Digital Thermometer Circuit using Arduino and IC LM35, as first, the Arduino reads the voltage from the LM35 sensor, and then it converts this voltage into a temperature value. Moreover, people have used thermometers for a long time to measure temperature and then finally, the measured temperature appears on a small […]

Filed Under: Arduino Projects, DIY Projects, Sensors and Detectors

Fire Alarm Circuit using Thermistor and IC 555

Last updated on 10 June 2026 by Admin-Lavi Leave a Comment

The Fire Alarm Circuit using Thermistor and IC 555 help to find and warn people about fire, as this design uses IC 555 and thermistor to check temperature change and maybe fire. Furthermore, thermistor is special part which feels the temperature change, also circuit is easy to make and thermistor changes resistance with heat and […]

Filed Under: 555 Timer Projects, Alarm Circuits, Automation Circuits, Security and Protection, Sensors and Detectors, Transistor Circuits

Air Flow Detection Circuit

Last updated on 9 June 2026 by Admin-Lavi Leave a Comment

Air Flow Detection Circuit means basic electric circuit to check if air is moving or not; also people use this in machines or home projects to watch air flow. Furthermore, in this project we make very simple circuit to see if air is moving and also we used broken AC bulb and few cheap parts […]

Filed Under: Automation Circuits, Hobby Circuits, Sensors and Detectors

  • « Go to Previous Page
  • Page 1
  • Interim pages omitted …
  • Page 19
  • Page 20
  • Page 21
  • Page 22
  • Page 23
  • Interim pages omitted …
  • Page 38
  • Go to Next Page »

Primary Sidebar




Categories

  • 555 Timer Projects (122)
  • Alarm Circuits (75)
  • Amplifier Circuits (92)
  • Arduino Projects (103)
  • Audio Circuits (189)
  • Automation Circuits (103)
  • Automobile Circuits (38)
  • Battery Charger Circuits (86)
  • DIY Projects (365)
  • Free Energy (12)
  • Heater and Temperature Controllers (32)
  • High Voltage (23)
  • Hobby Circuits (194)
  • Indicator Circuits (62)
  • Inverter Circuits (19)
  • IoT projects (8)
  • LDR Circuits (45)
  • LED and Lamps (195)
  • Meters and Testers (43)
  • Mini Projects (279)
  • Motor Controllers (25)
  • Oscillator Circuits (63)
  • Power Supply Circuits (221)
  • Radio Frequency (7)
  • Remote Control Circuits (11)
  • Renewable energy (6)
  • Security and Protection (105)
  • Sensors and Detectors (223)
  • Solar Circuits (31)
  • Timer Circuits (62)
  • Transistor Circuits (175)
  • Transmitter Circuit (20)
  • Tutorials (23)
  • Voltage Regulator (38)
  • Water Level Controller (10)

Recent Posts

  • Low Current Controlled Battery Charger Circuit using LM723 IC
  • 741 Op-Amp Treble Booster Circuit
  • Simple Diode and Transistor Based Audio Limiter Circuit
  • Simple 500mW Speaker Driver Circuit
  • Easy DIY LM386 Audio Amplifier Circuit

Recent Comments

  1. Tony Gallegos on NTC Thermistor Based Temperature to Voltage Converter Circuit
  2. colin on Simple Single Transistor Audio Amplifier Circuit
  3. How to Make a Bird Chirping Noise Easily on Chirping Bird Sound Generator Circuit
  4. Transistor Based Medium Impedance Preamplifier Circuit - Circuit Ideas for You on Low Impedance Input Transistor Preamplifier Circuit
  5. Admin-Lavi on Alternate Red Green LED Flasher Circuit

Copyright © 2026 | New Circuit Ideas