IJ Instruments Ltd. - the IJ-6 software-based temperature controller I now have my business website up and running at www.eyejayinstruments.com . My first product is the IJ-6 software-based temperature controller - please feel free to check it out. All inquiries regarding it should be sent to firstname.lastname@example.org . Please check out the News page, or try one of the categories below. The dates on the various content in the categories below are usually when it was first made/done/bought (usually).
Home Projects Shop Forums Download About JRO Other NEW version 1.1 of the hardware has been completed! Improvements in v1.1: Frame-rate is increased from 27 frames/sec to the full 30 frames/sec The OV6620 image sensor crystal now supplies the clock to the AVR mega8 Auto-baud of the user-interface serial port will be supported soon...
I’m working on an I2C project, but I don’t have a sampling oscilloscope and I need to see what the heck is going on, so I put together this quick and dirty I2C sniffer sketch. You connect two digital pins on the Arduino to the I2C bus lines SDA and SCL, and Arduino ground to I2C ground. The digital pins on the Arduino must be on PORTD, which are pins 0 through 7. It’s probably a good idea to avoid the serial lines, which means you should use any two pins between 2 and 7. It captures the data (within a certain time window) and then it sends CSV-formatted output to the serial port. You can then take this data and plot it to get an idea of what’s going on on your I2C bus.
Screen shot of Logisim 2.7.0 Latest release: Logisim 2.7.1 is now available. [ Full announcement and change log ] (21 March 2011) Logisim is an educational tool for designing and simulating digital logic circuits. With its simple toolbar interface and simulation of circuits as you build them, it is simple enough to facilitate learning the most basic concepts related to logic circuits. With the capacity to build larger circuits from smaller subcircuits, and to draw bundles of wires with a single mouse drag, Logisim can be used (and is used) to design and simulate entire CPUs for educational purposes.
Submitted by dunk on February 16, 2007 - 12:49pm. USB-servo-2. (aka RobotController) (a continuation of USB-Servo (aka Mousepointerpointer) ) General. This device was designed to control standard hobby radio control servos via a PCs USB port.
This homemade clock uses a PIC16F877 Microcontroller with a 20MHz clock, it also has a DS1307 real time clock with battery backup. 169 x 700mcd diffused white LED's connected in a matrix configuration 24 hand postions which gives a resolution of 2 to 3 minutes per hand Videos of the clock can be found on my youtube channel below, some slight alterations have been made sinse the videos were posted, changes to the patterns, flicker reduced, bugs fixed ect. You will notice the LEDs flicker in the videos, this is the camera picking up the flicker as the LEDs are multiplexed.
Download DesignSpark PCB Activate DesignSpark PCB Born from our belief that providing free engineering resources inspires innovation in our customers, DesignSpark PCB is a professional standard Schematics Capture and PCB Layout tool available for FREE (commercial or non-commercial use, no limitations or licensing) Download DesignSpark PCB Version 4 Brochure (PDF)
ShmooCon was, once again, a fantastic experience this year. One of many highlights of this year's event for me was hacking on some radio devices with Travis Goodspeed in the hotel bar for hours on end. This included playing with the IM-Me that he brought. As soon as I got home I ordered one. I found mine for $15.99 and free shipping on eBay. Since then I've written custom firmware to turn my IM-Me into a pocket spectrum analyzer, shown here displaying activity of a frequency hopping system at a grocery store.
Now Available Cammy v.1.0 kits - Click Here Cammy v.1.0 Living Room Webcam Tracking It wasn’t long ago that my wife and I had our first child and if you have any kids you probably know the excitement of playing, teaching, changing diapers, staying up late at night and all those great memories. For us, my daughter's “Papa” lived on the other side of the country so he didn’t get to see her often; although, he came out whenever he could.
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The Design For the water valve, I picked the Orbit yard watering valve . It's widely available in home improvement stores, and it is cheap. It has two pins: applying +24v opens the valve, and -24v closes the valve. It uses a latch solenoid, drawing power only when you open or close it. This makes it very power efficient.
Jeudi 10 septembre 2009 4 10 / 09 / Sep / 2009 21:28 Première réalisation à base de microcontrôleur Picaxe. L'importance du rodage d'un moteur électrique n'est plus à démontrer. L'opération vise à amélier le contact électrique entre les balais du collecteur (charbons) et le collecteur situé sur le rotor. Pour cela, il faut faire tourner le moteur à faible vitesse au début pour qu'il n'y ai pas d'arrachement de matière mais bien une usure progressive conduisant les balais à prendre la forme du collecteur.
Photo 1. X-Y Scan Head I think everybody saw Laser Effects that shows up stages, discos or festivals. There are two categories on the laser effect.
For you high-voltage minibooster fans out there, here's the one-chip, one battery way to do it. The MAX1044 is a charge pump converter - it uses a capacitor as a "bucket" to pump charge from one place to another. Normally, there is a capacitor connected from pin 2 of the 1044 to pin 4. This capacitor is charged between +9V and ground, and then switched in parallel with a capacitor from pin 5 to ground in a way that makes a negative voltage on the second cap. In this UPverting use, the 1044 still switches pin 2 between +9V and ground just as it would for a voltage inverter. However, we ignore the pin 4 and 5 connections that would make an inverter from it.
Build a 10$ X Y laser scanner ! First version The goal is to build a very low cost X Y scanner for a laser pointer, this X Y scanner must be able, from a PC, to display fixed or animated simple pictures or some characters. Problem is, of course, to build very fast actuators. Ultra fast galvo are very expensive.
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Head mounted display