A Homemade Variable Tuning Capacitor for tuning in your FM stations... Would you like to make this site your homepage? It's fast and easy... Yes, Please make this my home page! Don't show this to me again. A 'Multi-Turn' Homemade Variable Tuning Capacitor... A remarkably simple homebrew device for tuning in your FM stations! From a range of 5pF to 27pF, this multi-turn capacitor can be made using only 6 items... My main interest has always been in FM Transmitters and FM Receivers...and always looking for unique ways of achieving the same end results, by making homemade devices in place of store-bought components. The Radio Shack Special project calls for a typical 6-lead variable tuning capacitor. The above picture is the homemade variable capacitor. This homemade device can be used for the Radio Shack Special Project or the TDA7000 FM Receiver Project or any RF device that would need a variable capacitor. Items needed for the project The machine screw and nuts can be purchased at your local Lowe's Store. Radio Shack sells magnet wire. ...your friend, Patrick
Online Materials Information Resource - MatWeb Get loopy with the DIY $10 Ableton Footcontroller (no soldering required) A free keyboard-mapping utility called Autohotkey (if you’re running Windows). If you’re running Mac, the program to use is calledIKey. That’s it. 8. Metric Fine Thread Data Electronics DIY - Quality Electronic Kits, Electronic Projects, Electronic Schematics, FM Transmitters, TV Transmitters, Stereo Transmitters
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Adafruit MintyBoost USB Charger Kit v3.0 Elektromed | Electricity Meters | Water Meters | Gas Meters | Heat Meters News : PROVINCIAL DIRECTORS OF THE REPUBLIC OF TURKEY MINISTRY OFSCIENCE INDUSTRY AND TECHNOLOGY GOT TOGETHER AT ELEKTROMED. Read more News : Elektromed, accepted the award from the minister of energy and natural resources Mr. Taner Yıldız. Read more News : The successful debut of the Caspian International Aqua Technologies Exhibition and Forum, CATEF 2013 Read more News : Elektromed Central Anatolia Region Thermo Heat Meter Dealers Visited Factory Read more
Hacking A Fluke Multimeter To Serve Readings Over WiFi Your multimeter is probably your most useful instrument if you work regularly with electronics. It goes with you everywhere, and is your first port of call in most cases when you are presented with a piece of equipment. And when you think about it, it’s a pretty amazing instrument. There is still one thing affordable multimeters remain unable to do: they can’t log their readings for analysis on a computer. Lord of Hackaday [Sprite_TM] decided to hack his multimeter to serve its readings over Wi-Fi. Opening up the 15B+, he was presented with its processor concealed under a blob of epoxy and thus unidentifiable. Further detective work allowed him to identify the baud rate, and supplying random commands delivered him some that returned data packets. Multimeter hacks have featured several times here at Hackaday.
507 Mechanical Movements In this INDEX the numerals do not indicate the pages, but they refer to the engravings and the numbered paragraphs. Each page of the letter-press contains all the descriptive matter appertaining to the illustrations which face it. Power Quality Meter using Arduino -Use Arduino for Projects Arduino UNO project, Power Quality Meter, someone would call it’s PQ Monitor or PQ Analyzer. I had already published one blog devoted RMS voltage measurements on full band 20 – 20 000 Hz audio signals. ( Following my own style, I’d refer to already published materials whenever it’s possible ). This time measurements performed on single AC Power Grid frequency. ( 60 Hz in Canada. Algorithm would works with 50 Hz as well ). Features: Graphic LCD display 128×64;First 5 harmonics presentation;RMS Voltage Indicator;Frequency Monitoring;THD calculation;Internal data up to 63-d !!! The Holy Grail of this project, is a method of sampling input waveform. It’s completely eliminate necessity of the windowing.Only ONE period of input waveform is enough for precise calculation. In it’s essence, I created a software PLL (Phase Lock Loop). Hardware. As you can see on the drawings, circuitry is quite simple, one LCD ( I used SparkFun LCD-00710, could be different ) and one IC, LM311 – comparator.
The H.P. Friedrichs (AC7ZL) Homepage DIY Portable, Solar Powered Wi-Fi Repeater With a Wi-Fi hotspot, you can remain connected to the cloud from anywhere. Even then, a Wi-Fi router needs electricity to operate. To cut this umbilical cord, you can power it with the help of the sun or the wind just like this portable, solar powered Wi-Fi repeater. A solar panel powers a Linksys WRT54G v8 router with 7.5 volts at 500 milliamps in direct sunlight. What’s even neater is that the self built Wi-Fi repeater has a custom firmware called DD-WRT that scans and connects to the strongest signal automatically and then repeats it. Popular Wi-Fi Projects:
Low Cost Water Flow Sensor and Ambient Display using arduino -Use Arduino for Projects Water is a precious resource. Millions of people do not have access to clean drinking water, and as many as 4000 children die from water contaminated illnesses every day. Yet, we continue to be wasteful with our resources. The overarching goal of this project is to motivate more sustainable water use behavior and raise awareness about global water issues. This is an instructible on how to crudely detect water flow in a pipe and drive an ambient display. This is a project by Stacey Kuznetsov and Eric Paulos at the Living Environments Lab, at Carnegie Mellon University Human Computer Interaction Institute. Produced by Stacey Kuznetsov stace@cs.cmu. Eric Paulos eric@paulos. Living Environments The video below illustrates a previous version of this project, where a microphone is used instead of a piezo element to detect water flow. Step 1: Gather Materials You will need: Step 2: Build the Circuit