Project Solutions

Altium FPGA LiveDesign Kit -Designing with FPGAs （3）

Published:2011/8/17 21:53:00 Author:Phyllis

By Paul Goossens Debugging The real power of the software is really only utilized when you want to carry out measurements on your design. It is obviously impossible to measure internal signals of the FPGA with a probe, so most examples are provided with a JTAG interface. With this you can (without di...   (View)

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Altium FPGA LiveDesign Kit -Designing with FPGAs （2）

Published:2011/8/17 21:41:00 Author:Phyllis

By Paul Goossens Software The accompanying software is an evaluation version of the Protel/Nexar software suite from Altium. This version is time limited (30 days). Keep in mind that these 30 days start counting down from when the package is sent! It makes sense therefore, to install and try everything out immediately once you receive the package. This software looks very po...   (View)

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Altium FPGA LiveDesign Kit -Designing with FPGAs （1）

Published:2011/8/17 21:31:00 Author:Phyllis

By Paul Goossens Modern circuits make ever more extensive use of FPGAs. Special software is required when designing with these devices. One of the companies that produce such software is Altium. In order to allow their software to be evaluated, they offer a cheap evaluation kit. Once the evaluation period has expired, the kit is still very useful as a development platform for your own desig...   (View)

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PLAY SOLITAIRE .....packed in an AT90S micro （2）

Published:2011/8/17 21:17:00 Author:Phyllis

By Andy&Rose Morrell Rules for playing Solitaire As the name suggests, Solitaire is a game to be played on your own. The board is made up of 33 LEDs laid out in a cross shape, where a piece on the board (or ’peg’) is indicated by an active LED. The aim of this game is to be left with as few pieces...   (View)

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PLAY SOLITAIRE .....packed in an AT90S micro （1）

Published:2011/8/17 21:03:00 Author:Phyllis

By Andy&Rose Morrell This version of Solitaire is played with an array of LEDs instead of pegs, with a microcontroller behind the scenes to check if you’re any good at playing. As you’ll soon find, the game is challenging and addictive! This project is a fine instance of a microcontroller and its residen...   (View)

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Wond＇rous Light Chain

Published:2011/8/17 3:03:00 Author:Amy

With the Festive Season upon us, it seems fit­ting to devote this month’s Quizz’away instal­ment to the perennial problems associated with Christmas tree lighting. Conventionally, lamps are connected in series (Figure 1) and this immediately creates a problem: when one lamp fails, it breaks the series network and all other lamps will also go out. But that’s not all, because in the dark you will have hard ti...   (View)

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LED Christmas Tree: Plus additional seasonal circuit

Published:2011/8/17 2:37:00 Author:Amy

This flashing LED mini only dead simple to build but the design is also repeatable and very reliable in operation. In fact an ideal last-minute project to brighten up the house or office in the run-up to Christmas. It can sometimes be satisfying for the electronics enthusiast to build some­thing that adds a personal touch to a special occasion. The mini Christmas tree design described here fits the bill...   (View)

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Intelligent Clap Switch: manual remote control with extras （1）

Published:2011/8/17 2:15:00 Author:Li xiao na

Jorg Prim A clap switch circuit is a classic beginner’s project. Equipment can be switched on and off by just clapping your hands. Add a tiny microcontroller and you can easily build-in some more useful futures. The microcontroller in this circuit makes it a simple job to add some useful features that are no...   (View)

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Power Supply for USB Devices

Published:2011/8/17 2:00:00 Author:Amy

Roman Mittermayr More and more equipment is sold that runs off internal rechargeable batteries. Although a matching charger is usually supplied in the package, there are also devices that can only be charged via a USB port. That is not surprising in the case of USB MP3 players, which have to ’dock’ in the PC an...   (View)

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Voltage regulator calculation

Published:2011/8/17 1:51:00 Author:Amy

Victor Himpe Before you con design on adjustable voltage regulator into your circuit, or do a redesign, you need to calculate the values for two resistors. This is not diffi­cult in itself, but actually finding the right resistors may po...   (View)

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Power Supply Design: Information, dimensioning and simulation

Published:2011/8/17 1:44:00 Author:Li xiao na

Harry Baggen ＆ Karel Walraven Designing a power supply for one of your circuits can be plain sailing but also turn out to be a surprisingly complex job. Switch-mode power supplies in particular may present a real challenge before useful results are obtained. Fortunately, several semiconductor manufacturers come to our rescue. (View)

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Continuous Flow Soldering

Published:2011/8/17 1:35:00 Author:Amy

From reader correspondence we know that lots of you are still hesitant about soldering SMDs (surface-mount devices), particularly integrated circuits. We won’t say it’s a piece of cake, but maintain that there’s no rea­son to start panicking about SMDs, as accurate soldering does the trick. Using the right tools and some ba...   (View)

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Delphi for electronic engineers: Part1-the first steps （4）

Published:2011/8/17 1:13:00 Author:Li xiao na

Detlef Overbeek ＆ Anton Vogelaar The third program -an alarm system This program provides protection against burglary and fire in a dwelling. The protected dwelling is divided into four zones. If there is an alarm condition in one or more zones this should be indicated both visually and aurally. The alarm system is implemented as follows. Each zone contains a number of sensors with norma...   (View)

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Heathkit TC-2P Tube Checker

Published:2011/8/17 1:04:00 Author:Amy

Jan Buiting I came across this gem in an unexpected place, namely a flea market for vintage motorcycle parts! Standing between heaps of pistons, wheels and engine parts, the owner claimed it was some kind of electrical instru­ment capable of testing well, a lot of things I guess . When the small case was opened I immediately recognized a Heathkit lube tester that had def­initely ...   (View)

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DELPHI FOR ELECTRONIC ENGINEERS Part 3- An external calculator （3）

Published:2011/8/16 22:51:00 Author:Phyllis

By Herman Bulle Combining the routines In principle that is all there is to do: we know how to select a column and how to read on which row a key is pressed. However, these functions still have to be ’glued together’ and the result has to be shown on the display. This takes place as follows: a timer is used to call the function GetKey at regular intervals. This call...   (View)

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DELPHI FOR ELECTRONIC ENGINEERS Part 3- An external calculator （2）

Published:2011/8/16 22:30:00 Author:Phyllis

By Herman Bulle Software switching To drive the DTR and RTS lines we’ll have to write a bit of Delphi code. To start with, we have to open the serial port. We have already covered this in Part 1 for the burglar alarm: FHandle: = CreateFile (PChar(port), Generic_Read+ Generic+Write, 0, Ni...   (View)

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DELPHI FOR ELECTRONIC ENGINEERS Part 3- An external calculator （1）

Published:2011/8/16 22:16:00 Author:Phyllis

By Herman Bulle In the previous article we saw how we could implement a simple calculator using Delphi. This time we connect an external keypad to the serial port, to allow the calculator to be controlled externally. We’ll use the program from the last article (slightly modified) to put the numbers onto the display and to perform the calculations. The external keypad, which we’ll bu...   (View)

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LPC210x ＇ARMEE＇ DEVELOPMENT BOARD Part 1: an ARM processor survey （2）

Published:2011/8/16 21:51:00 Author:Phyllis

By Tony Dixon All three controller chips are based on a common system architecture approach which offers the same memory map, vectored interrupt controller and similar peripheral complements. Also common to them are the same Flash programming and updating mechanism, JTAG debugging and emulation facilities. These devices operate from 1.8 V for the core CPU functions and 3.3 V for the...   (View)

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LPC210x ＇ARMEE＇ DEVELOPMENT BOARD Part 1: an ARM processor survey （3）

Published:2011/8/16 21:40:00 Author:Phyllis

By Tony Dixon Overview of the ARM7TDMI core The ARM7 core is a 32-bit Reduced Instruction Set Computer (RISC). It uses a single 32-bit bus for instruction and data. The length of the data can be 8, 16 or 32 bits and the length of the instruction word is 32 bits. (View)

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LPC210x ＇ARMEE＇ DEVELOPMENT BOARD Part 1: an ARM processor survey （1）

Published:2011/8/16 21:14:00 Author:Phyllis

By Tony Dixon In the first installment of a three-part article we will look at recent developments in 32-bit ARM based microcontrollers, concentrating on those devices that are available, do not cost an arm and a leg or require a major investment in surface mount soldering equipment! ARM stands for Advanced RISC Machine, where RISC means Reduced Instruction Set Computer. The ARM 32-...   (View)

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