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    48 x Electronics Hobby Projects

    Browse through a total of 48 electronics hobby projects. Interesting hobby projects and their electronic circuits schematics for easy-to-follow building. Build electronic hobby kits as easy as 1, 2, 3. You can use the tags to find related articles to this category.

    PIR sensors   fire alarms   infrared alarms   motion sensors   sirens   smoke alarms   temperature sensors   touch alarms  

    Optical Rain Sensor RG-11 Review Dreaming about a little device capable of measuring rainfall or closing a skylight when it starts raining? Recently I found an amazing Optical Rain Gauge introduced by Hydreon Corporation. The RG11 Optical Rain Gauge is a novel, futuristic and relatively inexpensive optical rain sensor good for hobbyists and experimentalists, including those who need a sensor to trigger some electromechanical...
    Optical Mouse – Learn To Hack In this tutorial, I will show how you can handle the optical sensor inside a cheap optical-mouse for your next microcontroller project. Hope, this will allow your preferred microcontroller to look at the mouse inputs, detect surface movements, measure surface speed, etc. For the experiment, I opened an old usb optical mouse made by Belkin. The major component in...
    Lost Model Alarm for RC Planes Here is an affordable circuit of a tiny, lightweight, and easy to handle lost model alarm (LMA) for model RC planes. A simple LMA beeps so you can listen for it while you carry out your search and rescue mission. If you have a lost model alarm fitted in your RC model you will be able to walk straight...
    High Power Ozone Generator Here is a more powerful ionisator and ozone generator than described in my version-2. It is meant for continuous operation in problem spaces such as cellars with some rot & mould. It can also be operated in normal living rooms when you are not at home. But it is too aggressive for your lungs, if used continuously in inhabited...
    Low Power Ozone Generator Generating ozone and negative ions in the air can be done by a corona discharge. For this we can use a sharp tip of negative polarity, acting against a flat metal part of positive or neutral potential. The device generates negative air ions and ozone. The ozone acts against rot and mould, and can refresh the unhealthy air of...
    Portable Morse Code Practice Oscillator Little circuit of a Morse Code Oscillator is presented here. Excellent for learning and teaching Morse code, this code practice oscillator – ideal solution to practice sending the code and improve your speed – is a light-weight portable unit powered by one AA cell (1.5V/1.2V) and is based on the well known ‘Joule-Thief’ concept. There is little to say...
    Dew Heater Controller For Telescope Dew (condensed moisture) is one of the astronomer’s worst enemies, and all telescopes are subject to the dew problem. If no precautions are taken, it can easily destroy a perfect observing night, as it forms on mirrors and lenses, thus it is required for almost every amateur astronomer to have some kind of dew control system for his equipment....
    Model Railroad Controller with Presence Detector Railroads are a big part of the history. They take us back to an earlier time where once trains were the fastest way to cross a huge land. Model Railroading could take you back to those more good old times, and it is a greatest hobby. Probably,you have already noticed that this will be one of the most rewarding...
    Model Rocket Launch Controller Model rocketry is an amusing hobby! Model rocket launcher circuit presented here is carefully designed to avoid accidental ignition, and is capable of delivering battery power to the igniter in an efficient manner. This will avoid launch failure and maximize the battery life. A model rocket launch controller is designed to do just one thing – ignite the rocket...
    Bird Bath Fountain Monitor A bird bath fountain (a small shallow pond-created with a water-filled basin- in which birds may bath and from which they may drink) can be a garden ornament, small reflecting pool, outdoor sculpture, and part of creating a vital wildlife garden. It is an attraction for many different species of birds to visit gardens, especially during the summer and...
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