Garage car detector without a microcontroller

At the end of this instructable you will be able to detect your car as it approaches the wall inside your garage, signalling you that the car is inside far enough so you can close the door. Most car sensors will use a microprocessor to help calculate the distance of an approaching car when entering the garage. At our Wichita, KS makerspace MakeICT, we received a bag of components from JAMECO, which contain ...

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Wearable WiFi Detector

A WiFi (Wireless Fidelity) is a technology that uses the 2.4GHz UHF and 5GHz SHF ISM radio bands to allow devices such as computers, smartphones, digital cameras, tablet computers, etc. to network. Nowadays the WiFi technology is being used by cities to provide free or low-cost Internet access to residents. The WiFi is inexpensive and is easy to setup but it is also unobtrusive. The people may not know that ...

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System is Down Detector

If you work in a company that has a website, you know how important it is that the website always be up and running. That's why you constantly see "99.99999% reliability!" all over the fancy server hosting sites. A website can't make money if the system is down, so knowing when that happens and reacting quickly is super important. In this Instructable, we will use the LinkIT ONE board to make an alert syste ...

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Microcontroller Controlled Metal Detector Projects

Result of displays in the form of two scales, which are estimated to judge the material goal.In addition, the screen is small scale level of response and the current supply voltage. PIC18F252 The program is intended for controller PIC18F252.The controller PIC16F873 (A) to this version can not be used. This is more demanding to resources controller. 252nd compatible controller on “pins” with 873 – m and can ...

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PIC16F84A Gas Detector using GH-312 sensor

Introduction This is a gas detecting circuit capable of sensing many different types of gases.  The sensor used is the GH-312 and from the datasheet it is capable of sensing gases like smoke, liquefied gas, butane and propane, Methane, alcohol,hydrogen, etc. Schematic Parts List R1                   1K resistor R2                   1K resistor P1                    100K potentiometer C1                   10 ...

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Passive Infrared Detector Circuit

The infrared (IR) is invisible radiant energy, electromagnetic radiation that we cannot see with our eyes, but we can sometimes feel on our skin as heat. The infrared light falls just outside the visible spectrum, beyond the edge of what we can see as red. Most of the thermal radiation emitted by objects near room temperature is infrared. The circuit uses a MCP6032 microchip operational amplifier. The MCP60 ...

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WiFi Smoke Detector

This is a simple WiFI Smoke Detector that texts me when it senses smoke. I made this for my battery storage area in case of a lithium polymer fire. I still have all of my regular smoke detectors installed and I don't suggest relying only on this, but rather as an extra layer of protection. If I had a house I would install a proper fire alarm system that calls the fire department, but I live in a small apart ...

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Metal detector robot using pic microcontroller

Metal detector robot using pic microcontroller,this robot is designed for metal detection in places where human being can’t reach easily. Metal dectector robot detect metal through metal detector sensor. Its detect metals coming to it ways. Wherever its go, it keep detecting metal. In case of metal detection, a sound will be produced at the control room or receiver side. This article will give you brief ide ...

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Ionization Smoke-Detector With Programmable Calibration

Microchip Technology unveiled the RE46C180—the world’s first Ionization Smoke-Detector IC with programmable calibration and programmable feature selection, and the first with horn synchronization and auto alarm locate. This Ionization Smoke-Detector ASIC also has expanded options for implementing hush operation, and more options for interconnect operation—including with carbon-monoxide detectors. These feat ...

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Cell Phone Detector

Project Summary This is a mobile phone sniffer circuit that can detect the signals being used in the GSM (Global System for Mobile Communication) band at about 900 MHz. Since the signals are digitally encoded, it can detect only the signal activity, not the speech or the message contents. A headphone is used to hear the detected signals. Project Description The circuit schematic is given in the .rar archive ...

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