Sigrok. Getting Started with FPGAs: The Development Environment and “Hello World” Getting started with FPGA development is much like getting started with any other piece of programmable silicon.
First, pick the hardware to use. Next, set up the development environment. Finally, create your first “Hello World” application. In this article, I’ll take you through all three of those steps and, hopefully, get you past the most common MCU-to-FPGA gotchas. Supporting Information Previous Articles in This Series. Opamp Test and Design Board. Opamp Design and Test BoardRod Elliott (ESP) Introduction Opamps are wonderful little building blocks, but quickly building a test circuit is a real pain.
Most people will use a "breadboard", one of those plastic blocks with holes and connections, but I have found them to be a complete pain in the backside. After a while the contacts expand, wires fall out, and you can't actually see what you are doing anyway. One small slip, and the opamp is consigned to the dustbin. This project is basically what I use for a quick prototype, or for just mucking about with an idea. With four opamps to experiment with, even quite complex circuits can be made. Description For this project, two low-cost dual opamps are used.
The layout of the top of the board is shown in Figure 1, and the opamp symbols are simply drawn on the top (non copper side) using a fine felt-tip pen. Custom Cables & Guide to Crimping Dupont PCB Interconnect Cables. Hand making vacuum tubes Part 1. Greg's Slide Rules - Downloadable Manuals. What Can You Do With A Slide Rule? Peter Alfeld, --- Department of Mathematics, --- College of Science --- University of Utah There was a time when electronic calculators did not yet exist.
This did not stop us from doing complicated things, like going to the moon, figuring out the double helix, or designing the Boeing 747. In those days, when we needed to compute things, we used slide rules which are marvelous and beautiful instruments! There are many pages about slide rules on the web, and you can still buy brand new slide rules (40 years old but never used, and still in their factory supplied box) in various places. The purpose of this particular and quite idiosyncratic slide rule page is to describe common scales used on slide rules, and the kind of mathematical expressions that could be evaluated with those scales. The two images on this page show the two sides of a particular slide rule in my collection.
German made slide rules of that time (the late 1960s) usually come with an accessory plastic ruler. Why? . . Turn Your Smartphone Into a Digital Microscope! Slowing 198.27.81.81&c=1&t=42173.03009375. This page details the use of Epson^ InkJet printers with pigment based inks to feed and directly print resist patterns to copper clad printed circuit board stock, ready for etching.
Once you can feed the PCB through the printer for etch resist, you can then feed it back through the printer for solder mask (yes! Electronics Tech Tips. When working with SMT components, a solder-paste silk screen method plus a good baking in a special oven to make the paste flow works best.
But for most of us working on small projects with a limited budget, angel hair solder and a fine tip iron that is ESD safely grounded is the way to go. Those new to SMD components may struggle with "tomb stoning," which happens when one end of the component is soldered and the other end pops up in the air. Here's an easy solution. You will need to use both hands (assuming they do not shake too much) one to hold the Iron and solder and the other to hold down the passive component with a small tool or tooth pick until the iron is removed and the solder has solidified.
Schematic Publisher Beta 1.0 RJWSoft Schematic Publisher is a complete schematic capture and publishing system. Schematic Publisher is perfect for students, hobbyists, and professionals. by Ray Wilson. RJWSoft Schematic Publisher is a complete schematic capture and publishing system.
Schematic Publisher is perfect for students, hobbyists, and professionals. Courtesy/Thanks to: Ray Wilson Description: By Ray Wilson: RJWSoft Schematic Publisher is a complete schematic capture and publishing system. What do I ask in return you say...? Easy to use functionality featuring: Schematic Capture, Edit & Print. #136: What is a dB, dBm, dBu, dBc, etc. on a Spectrum Analyzer? How to think in dB. Signal Synthesis. MT-100.pdf. #48: Basics of Lissajous Patterns on an Oscilloscope. #88: Cheap and simple TDR using an oscilloscope and 74AC14 Schmitt Trigger Inverter. nScope. Cheap and simple TDR using an oscilloscope and 74AC14 Schmitt Trigger Inverter. Measure Capacitors and Inductors with an Oscilloscope and some basic parts. Front End Turns PC Sound Card into High-Speed Sampling Oscilloscope. Part 1 - End, Clock Generator. By Doug Mercer, Analog Devices Various software packages enable the stereo sound card found in a personal computer (PC) to provide oscilloscope-like displays, but the low-sample-rate, high-resolution analog-to-digital converters (ADCs) and ac-coupled front end are optimized for 20 kHz or less of usable bandwidth.
This limited bandwidth can be extended – for repetitive waveforms – by using a sampling front end ahead of the sound card inputs.