Gadget Factory > Projekte > OpenBench Logic Sniffer > Home
OpenBench Logic Sniffer is an open source logic analyzer hardware design. It’s purpose is to provide a hardware platform for the SUMP logic analyzer at the lowest possible cost. This project started in the comments on a post. The OpenBench Logic Sniffer is a purpose-built logic analyzer board designed to be low cost but high speed. 70MHz+ sample speeds 32 channels 16 buffered, 5volt tolerant channels USB interface, USB powered USB upgradable everything Make it as DIY as possible Make it as open source as possible $30-$40 price range We didn’t quite hit our initial price range, but we got really close. You can get your own assembled Open Logic Sniffer at Seeed Studio for $45, including worldwide shipping. Block Diagram Windows Quick Start Video UART Demo Video
University: Volts, Amps, and Ohms
So You Want to Use PWM, Eh? | Non-Lexical Vocables
Pulse-width modulation. It probably sounds a little confusing if you’re new to electronics. Kindof a word mashup, really. What do pulses, width, and modulation have to do with each other anyway? I remember first learning about PWM during my freshman year of college at RPI. Say you’ve got a light-emitting diode (LED) and a battery. Imagine you could connect and disconnect the LED and battery multiple times per second, causing the LED to flash or pulse (see graph above). Now in case you’re imagining yourself frantically flipping switches on and off, or tapping wires against battery terminals, you can stop. So what’s PWM good for, anyways? Now you may be wondering why I’m writing about PWM all of a sudden. But have you ever noticed that on some cars (e.g. By the way, if you’re ever trying to determine the frequency of a blinking light, just snap a couple pictures while moving your camera (or the light). I’m thinking this long-exposure shot might also pass as modern art in some circles.
Build the VGA VIDEO GENERATOR - Page 1 of 16
Microcontrollers are well suited to display information on analog VGA monitors If you have been working on microcontroller projects for any length of time, then you know that it can be difficult to display a large amount of data, especially when it contains more than just plain text. There are limits to how much useful information you can display on a basic character LCD, or even a dot matrix LCD, since most have low resolution, no color, and a poor refresh rate. I came up against this problem when working on a robotics project that needed to display a color image captured from a small camera and decided to see how much effort it would take to create an image on a VGA monitor using only a microcontroller to "bit bang" all of the necessary signals. It took some time to learn how the five signals used on an analog VGA connection made an image appear on the screen, but the end results were much better than anticipated, providing a crisp 256 by 240 image on the monitor in 256 colors.
Analog computer 1
Back to homepageAnalog computer 1 Analog computer is a type of computer that works with continuously changing variables, as opposed to digital computer that uses discrete values. Digital computers are almost always electronic or electromechanical devices, while analog types can use any continous variable: voltage, water flow, air pressure, length (slide rule) and other. Finished analog computer. While first modern computers were analog electromechanical differential analyzers in the 1930s, soon thereafter they were faced with competition from electronic digital computers. Having said that, they were (and still are) excellent tools for simulation of real world. Recently I stumbled upon an article about very simple analog computer in a 1961 scanned Popular Electronics magazine. My pots one and three (R1, R3) have value of 250 Ohms, and second one (R2) 25 kiloOhms. Supply voltage is not critical, it can be anything from 1 to 10 volts, DC or AC. Board backside. Multiplication Division Squaring
Kurs: Steuern und Regeln mit dem Mikrocontroller (Kurs A)
Guten Tag! Um an den verschiedenen Kursen teilnehmen zu können, müssen Sie sich einen Nutzerzugang für diese Website anlegen. Für einige Kurse könnte zusätzlich ein Zugangsschlüssel notwendig sein. Für Nutzer der Lernplattform Lehrerfortbildung und der alten Moodle Lernplattform funktionieren die Nutzerzugänge wie bisher. D.h. Sie können sich mit den bisherigen Nutzerdaten auf der linken Seite wie gewohnt anmelden und benötigen keinen neuen Zugang. Gehen Sie dazu bitte wie folgt vor: Füllen Sie das Formular Neuer Zugang mit Ihren Angaben aus.Sie erhalten umgehend eine Benachrichtigung an die von Ihnen angegebene E-Mail-Adresse.Lesen Sie diese E-Mail genau und klicken Sie den darin enthaltenen Link an.Ihr Zugang wird auf diese Weise bestätigt und Sie werden automatisch mit Ihren zuvor angegebenen Zugangsdaten auf der Startseite eingeloggt.Jetzt wählen Sie bitte den Kurs aus, an dem Sie teilnehmen möchten.Für einige Kurse ist ein Zugangsschlüssel notwendig.
Arduino GSM shield
[singlepic id=192 w=500 h=375 float=center] This is a very low cost and simple Arduino GSM and GPRS shield. We use the module SIMCom SIM900. You can buy the GSM module premounted from our cart. To connect this module to Arduino we make a PCB that include a LM317 some capacitor filter and no more. The LM317 give to module about 3.9V.There is a switch to select the way to comunicate with arduino: - throw serial hardware (pin 0 and 1)- throw serial software (pin 4 and 5) R1: 470 ohmR2: 1 kohmC1-C3: 100 nF C2-C4: 470 µF 25 VL U1: LM317GSM: TDGGSM_900 module SW1: switch P1: Microswitch [singlepic id=194 w=500 h=375 float=center] Selecting the serial hardware there are no problem with the baudrate (the default module baudrate is 115200) but there are problem programming the module (the serial is also used to upload the sketch). Download GSM_Shield_Library New GSM/GPRS library [singlepic id=206 w=500 h=375 float=center] [singlepic id=159 w=500 h=375 float=center] How install the library for Arduino
