How to make a printed circuit board (PCB) using the UV light LED method. This instructable shows how to create well done PCB's using Ultraviolet light. It took us about 40 boards before we perfected our PCB, so we will share what worked and what didn't work. All the supplies can be bought from Fry's Electronics, Ace Hardware, Goodwill, Radio Shack, and Ebay . Our PCB tested the Atmel 208 pin PQFP Integrated Circuit (it may not look like it from the poor image quality but there were no shorts between all 208 pins! The materials needed are as follows. PCB: -Transparencies (MG chemicals brand ) -UV Presensitized Copper Clad Boards (MG chemicals brand ) -Laser printer (Brother HL-2070N) -200 UV LEDs (Bought from Ebay - Asia Engineer, seller giorgio11185. 5mm size, 3.4~3.8 forward voltage, forward current 20 mA, wavelength (nm) 395-400-405, view angle about 25 degrees.) -200 470 ohm resistors (included with Asia Engineer LEDs bought on ebay.
Labcenter Electronics : Proteus VSM - SPICE Co-Simulation/Debugging for PIC,8051,AVR,HC11 and ARM The VSM Advantage The Proteus Design Suite is wholly unique in offering the ability to co-simulate both high and low-level micro-controller code in the context of a mixed-mode SPICE circuit simulation. With this Virtual System Modelling facility, you can transform your product design cycle, reaping huge rewards in terms of reduced time to market and lower costs of development. If one person designs both the hardware and the software then that person benefits as the hardware design may be changed just as easily as the software design. In short, Proteus VSM improves efficiency, quality and flexibility throughout the design process.. What is Proteus VSM? Proteus Virtual System Modelling (VSM) combines mixed mode SPICE circuit simulation, animated components and microprocessor models to facilitate co-simulation of complete microcontroller based designs. Schematic Entry Proteus VSM uses our proven Schematic Capture software to provide the environment for design entry and development. ffullscreen
10 Free PCB Design Software Do you need a free PCB design software or tool to put in practice the new electronic project you’ve just designed? So, we present you 10 of the best PCB software tools available on the internet that will help you to develop your printed circuit board faster and with ease. See the list under these ads. 0 ∴ PCBWeb Designer PCBWeb is a free CAD application for designing and manufacturing electronics hardware. Design multi-sheet schematics with our fast and easy-to-use wiring tool. 1 ∴ ZenitPCB Is an excellent pcb layout design software tool to create professional printed circuit board ( PCB ). 2 ∴ TinyCAD Is a program to help you draw circuit diagrams. 3 ∴ Osmond PCB Is a flexible tool for designing printed circuit boards. 4 ∴ BSch3V Is a schematic capture program for Windows. 5 ∴ ExpressPCB Is a snap to learn and use. 6 ∴ Kicad Is an open source (GPL) software for the creation of electronic schematic diagrams and printed circuit board artwork.
OscilloPhone: Use your Smartphone as an Oscilloscope / Signal Generator The Electronic Circuit of this project is composed of 4 parts: 1. The power supply circuit 2. The Oscilloscope input circuit 3. • The power supply circuit To support and process sinusoidal signals, the OP Amplifiers in the system need to be supplied with asymmetric voltages. The capacitors C1, C2 and C3 are used to avoid voltage drops when a high current is requested from an output. • The Oscilloscope input circuit The actual Oscilloscope input circuit is a slightly modified version of the chipstein's circuit in his "Preamplifier for Smartphone Oscilloscopes", where I changed a few of the resistor and the capacitors values. First, the 1µF capacitor blocks any DC input and then the potentiometer adjusts the signal attenuation. An OP amplifier in unity-gain buffer mode receives the attenuated signal, and adjusts the high impedance circuit. The 100 Ω resistor and the bipolar LED limit the voltages reaching the phone to about ±1.8 V, and also warn you when signals higher than that are present.
Oscilloscope et Spectrodcope Detailed Features about: VA main form (version 8.x.x) (1) - Oscilloscope Dual channel Bandwith : depends from your soundcard (typical 20 Khz) up to 96 Khz (192 Khz sampling frequency) Resolution from 8 bit (S/N 46 dB) up to 24 bit (S/N >120 dB) Time division adjust according the sampling frequency and sample resolution Trigger (positive/negative slope) independent for both channels Complete software D/A of digital samples : the Nyquist theorem allows reconstructing exactly the input signal Utilities for quick frequency determination (hold left mouse button down and move mouse to get frequency/amplitude) Y-axis in Volt and percent full scale Auto calibration of scope (and spectrum) in volts (need an input signal of known amplitude) (2) - Spectrum Analyzer Dual channel Bandwidth : same as point (1) (oscilloscope function): is the half of the sampling frequency. (3) - Wave-form generator (4) - Frequency meter (5) - Volt meter (calibration needed) (6) - Filtering (7) - Memo windows
Solar Panel Testing Shunt Regulator I designed the Solar Panel Testing Shunt Regulator to function as a variable voltage shunt regulator for measuring the power output of small solar panels. I wanted to be able to load the output of a solar panel with a variable load to obtain various output voltage levels and measure the corresponding current flow. Repeating current measurements at various voltage levels to characterize a solar panel without having the output voltage level drift. The shunt regulator has a two position range switch. A high range where the shunt regulator starts to conduct at about 28 volts at the minimum shunt setting and a low range that the shunt regulator starts to conduct at about 15 volts with the minimum shunt setting. Both ranges can shunt the solar panel to less than about 1 volt at the maximum shunt setting but the low range has a finer voltage adjustment. Here are the measured voltage levels at full shunt and the corresponding current levels for this unit.
TARGET 3001! Cette présence internet, le logiciel "TARGET 3001!", cette documentation ainsi que les composants incluant dans les bibliothèques ont été élaborés avec tout le soin requis. Toutefois, nous ne pouvons pas garantir que les informations ou le logiciel TARGET 3001! Pas de rétour, pas d'échange Nous vous faisons remarquer que nous avons produit le logiciel TARGET 3001! Aucune responsabilité vis à vis du contenu des liens externes publiés sur notre site Malgré un contrôle minutieux, nous déclinons toutes responsabilités quant au contenu des liens externes. seuls les exploitants sont responsables du contenu des pages liées.
Wireless electricity transmission circuit So to make this circuit you will need: 1) NPN Transistor. I used 2N3904 but you could use any NPN transistor. 2) Magnet wire or insulated wire. 3)Resistor 1 Kilo Ohm. 4) L.E.D light . 5) A 1.5 Volt AA Battery . ( Do not use batteries of higher voltage unless you want to damage your transistor.) Tools needed: 1) Scissors or knife. 2) Soldering Iron (Optional). 3) Lighter (Optional). RF field strength meter | Electronics Repair And Technology News A simple and easy project for a rainy Sunday! Why would you need one? Sometimes we build electronic projects for fun only, or just for satisfying our technical curiosity; this is what I do sometimes. This project, however, started with a need. The need originated when a friend called for help to solve an intermittent problem with the UHF transceiver on his boat. The receiving ends reported frequent cuts in his transmission. I quickly improvised a very simple Field Strength Meter composed of a small antenna, a detector diode, a resistor, capacitor and a Micro Ammeter. From there, the technical curiosity took over; what if we could improve the circuit, making it more sensitive and, how high in frequency it would still work? I gave up (at least temporarily!) And here we go; we have a very simple instrument that can detect the activity of your Wi-Fi router, your mobile phone and about any RF transmitter through a wide range of frequencies. Fig. 1 Schematic diagram Fig 2. Fig 3. Fig 4.
HOW-TO: Build 3D models from Eagle files Overview Over the last few weeks we’ve been building 3D models of our projects in Google SketchUp using the EagleUp script. This script makes a 3D model of the board from Cadsoft Eagle board (.brd) files, and populates it with pre-existing models of components. Once you have a 3D model in SketchUp you are free to evaluate it, build custom enclosures around it, or interface your model with others. Be advised that to build full 3D models of your projects you will have to have models for all your components. Download and Setup There are a few apps you’ll need for everything to function properly. Once you have downloaded everything, install SketchUp and ImageMagick. Extract the EagleUp archiveMove the ”EagleUp_export.ulp” file to the ULP folder located in the Eagle installation folderMove the ”EagleUp_import.rb” file to the Plugins folder in the Google SketchUp installation folderMove the models folder anywhere you like, but remember where it is. Hit OK. Now open the board you want to model.
Rock Seven | Truly global GPS tracking and messaging systems using Iridium satellite | Core About The CORE The CORE is designed to provide a single-point of control for Iridium-based tracking devices. The system can support a multitude of different device types, allowing monitoring of all through a single console. The CORE is a purely web-based system, and can be accessed with any web browser from any internet connection. Whether you have 1 device, or 1000 devices, managing them is easy. The CORE also allows you to add line rental and credits to your devices, and manage your account. Our comprehensive management system provides the facilities needed for you to efficiently manage your fleet, monitor alerts from devices, setup geo-fences to provide early warning if a device has gone inside/outside a certain area etc. Iridium is the only satellite network that allows transmission of information from any point on Earth – other networks have no coverage in the polar regions, and have intermittent or no coverage in other marine and land areas.
Why You Should Be Using a Linear Voltage Regulator Voltage regulators are an essential part of many projects that require a stable input voltage. Their job is to take an unregulated input voltage and output a regulated voltage, with the only catch being that the input voltage must be higher than the output voltage. If you’ve got a project in the works that needs a specific voltage, here are several options you may consider: Fixed Voltage – LM78XX The LM78XX series of linear voltage regulator chips are extremely popular, and for good reason. They’re cheap, easy to use, require few other components, and have built-in circuit protection against drawing too much current. Fixed Voltage – Zener Diode You’re halfway through your project, and you just realized you’re fresh out of linear regulator ICs. Variable Voltage – LM317 When you need to be able to adjust the voltage output of a voltage regulator, the LM317 is right for you. A Note on Heat Sinks Jordan Bunker Technical Editor at Maker Media.
WWW.SIXMHZ.COM What's a sixmhz? This website is a compilation of instructions, ideas and plans for the really stupid and dangerous things I have built. It is my contribution to all DIY folks and dumpster divers, enjoy! Index of My Web Pages Email: sixmhz@yahoo.com Electronics: Soundcard-Oscilloscope Most of today's personal computers are equipped with quite advanced soundcards. These soundcards often contain powerful analog/digital converters, able of up to 100 ksamples per second at 16 bit or more. Why not use this capability and build a digital storage oscilloscope around it...? 1. 1. When using the soundcard as an oscilloscope, the low input impedance is a large disadvantage. 2. The circuit consists of a large bandwidth voltage follower built around a CMOS operational amplifier CA3140. Schematic of the input adapter for the soundcard oscilloscope. 3. Of course you could now start to write your own software for this project, or you could use the Windows sound recorder (just kidding...). The user interface of the digital storage oscilloscope "osci" showing noise input on both channels. But time has gone on and so has software development. a dual-trace oscilloscopea X-Y displaya spectrum analyzera signal generator The software is free for private and educational use.