DX Engineering – Amateur Radio and Ham Radio Systems and Equipment, Antennas, Antenna Components & Station Accessories Don’t Be Left Out! Add Your Antenna to our Customer Showcase Be a DX Engineering Superstar! SmaTrig - 15-in-1 trigger for SLRs The SmaTrig is a compact, AVR microcontroller based multi-function flash or camera trigger. Its 15 modes of operation make it come in handy in many situations. Besides the interval modes for time-lapse photography it is equipped with sensors for light and sound for capturing short-duration events or high-speed photography. It has a built-in sophisticated lightning trigger mode which reduces the shutter lag to the minimum by making use of the mirror lock-up function of the camera. The only connection with the camera is the external trigger plug. Finding Parts - Hobbyist / Surplus Sites The data on the "Finding Parts" pages is actually all in a Wiki (a webpage that anyone, even you, can edit!) If you have suggestions or ideas for other companies or sources you can post it in the forum but it might be faster and easier to just edit the wiki page yourself! (You'll have to make an account
Make a Joule thief. In the November 1999 issue of EPE (Everyday Practical Electronics), a small and intriguing circuit was published in the Ingenuity Unlimited section by Z. Kaparnik. It was a very small implementation of a typical transformer feedback single transistor invertor. The transformer was a standard ferrite bead with two windings wound on it and the circuit was using the high voltage pulse generated when the transistor turns off to light an LED from a single 1.5V battery. Simple Solar Circuits Simple Solar Circuits: How to get started adding solar power to your small electronics projects. Use the sun to power small solar and battery powered night lights, garden lights, and decorations for halloween. The first part of a solar circuit is… a device for collecting sunlight.
Single Op-Amp Twin-T Band-Pass and Notch Filter This is a Single Op-Amp Twin-T Band-Pass and Notch Filter circuit. This circuit uses the twin-T topology which requires one or two op amps and three resistors and three capacitors. That’s mean this topology based on a passive (RC) topology. It is not difficult to match the six passive components, but it is critical. we can use single value of capacitance and a single value of resistance to create C3 and R3. Here is the schematic diagram of the circuit:
Solution-VS1063 - MP3 / OGG / AAC / WMA / FLAC / G.711 / G.722 Audio Codec Circuit VS1063 is the newest VLSI Solution's MP3 slave processor family. As a first in VLSI's over decade long history of creating innovative audio IC products, VS1063 is as much aimed at encoding as it is at decoding audio. The VS1063 IC can encode an unforeseen multitude of audio formats, from MP3 and Ogg Vorbis to G.711 u-law, G.711 A-law, G.722 and 16-bit PCM. The proprietary MP3 encoder and Ogg Vorbis encoder have been carefully tuned for highest possible audio fidelity for high-quality audio streaming or recording. VS1063 can play back MP2, MP3, WMA, OGG, LC-AAC, HE-AAC, FLAC, IMA, G.711 u-law, G.711 a-law, G.722 and WAV PCM formats, making it very suitable for hi-fi audio playback and streaming applications. VS1063 also offers a full-duplex codec mode with optional Acoustic Echo Cancellation.
LEDs for Beginners So I wasn't completely honest - I have used LEDs once or twice before for simple applications, but I never really knew what I was doing, and since so many projects on instructables use LEDs, I thought I might as well teach myself and post about it too. I know that there are many projects already posted that contain information about how to wire LEDs for simple projects - LED Throwies, LED Beginner Project: Part 2 and 9v LED flashlight - teh best evarrr!, but I think that there could still be some use for a detailed step by step explanation about the basics of LEDs for anyone who could use it.
Control real world devices with your PC Parts list: Picaxe 08M chip available from many sources including Rev Ed (UK), PH Anderson (USA) and Microzed (Australia) Protoboard, servo, microswitch, 9V battery, 4xAA batteries and holder, tag strip, 10k resistor, 22k resistor, 33uF 16V capacitor, 0.1uF capacitor, 7805L low power 5V regulator, 10k pot, wires (solid core telephone/data wire eg Cat5/6), 6V lightbulb, D9 female socket and cover, 2 metres of 3 (or 4) core data wire, battery clips The above companies also sell USB to serial devices which are useful for laptops which don't have a serial port.
A new multi-function power supply unit for my Embedded Lab One important parameter in embedded system designing is power consumption. This parameter is directly related to the battery lifetime, if the system is to be powered from a battery. In order to determine the power rating of your designed system, you need to know how much current the system draws from the source at a given voltage. While working on my projects, I usually measure current by placing an external ammeter in series with the current’s return path. Open Source Kits Welcome to the Daisy mp3 project page! Here you will find everything you need to make the Daisy mp3 player. All the source files, hex files, EAGLE cad files, and documents are here. This is the official Make: mp3 player available here or at the Make: store. www.makezine.com