A Simple EMF Probe. There's something fascinating about electromagnetic fields.
Thanks to the modern world and the prevalence of electronics and electricity, they're all around us these days. FPGA course - Hamsterworks Wiki! From Hamsterworks Wiki!
This course is currently a work in progress, but aims to be a quick start for hobbyists new to using FPGAs. Now available in PDF To tie in with the release of the GadgetFactory LogicStart Megawing ( I've migrated this whole project onto GitHub, and made it available in PDF form. To download the full PDF click on Contains all that is here and more, and covers both the Digilent Basys2 and Papilio One + LogicStart development boards. Digilent Nexys2 - Hamsterworks Wiki! From Hamsterworks Wiki!
The Digilent Nexys2 is a great little FPGA development board from Digilent Inc ( It has a Spartan-3E 500 Gate Array, RAM and Flash, and a lot of useful switches, LEDs and buttons. Laser Diode Driver Basics. Power: Power must be provided to the control electronics and current source.
This can take the form of a DC power supply (some drivers use single supply inputs, others use dual supplies), or an AC input connector and cable. In some cases, where higher voltage is required to the laser diode, separate DC power supply inputs may be available to power the control electronics from a low +5 V supply and the laser diode from a higher voltage supply. What is the difference between an instrument, a module, and a component? Usually price, feature set, and size. An instrument typically has a front panel with knobs and button adjustments and some form of display to track how the laser diode is operating. Laser driver - It can be done. Choose the best Laser Diode Driver for your application. LPC1114FN28 with Open Source Tools « Meat and Networking. I’ve been excited about the LPC1114FN28 for a while now (at least, as excited as one could be about a microcontroller).
The LPC1114FN28 is a microcontroller from NXP with an ARM Cortex-M0 core in a 28 pin DIP package. With 32k of flash and 4k of RAM, this chip isn’t the biggest or baddest on the block, but at $1.50 in small quantities, it has just about every other uC beat in the performance-per-dollar arena. It’s got the basic peripherals, SPI, Serial, ADC, and I2C. Ken Silverman's Build Engine Page. I made this graphic for the intro screen of my Build "test" game.
On 12/23/2003, Jonathon Fowler released the first Build Engine port to use my "POLYMOST" technology. Polymost is an extension to the Build Engine code, featuring OpenGL support with true look up/down, MD2/MD3 models, and high resolution textures. You can find more information at Jonathon's site: I found this excellent quote on the Apogee/3DRealms website: The Build engine, upon which Duke Nukem 3D was constructed, went on to become the most successful engine in terms of number of games released, a record still maintained at the date of this writing (May, 1999), with 12 published games.
Lasers. DIY PCB Etching at HubCityLabs. DIY PCB Etching at HubCityLabs Last night we had our Electronics Workshop #6, where we learned to etch our own PCBs.
And while DIY etched PCBs may not approach the quality of boards made at outfits like SeeedStudio, it’s great for making early prototypes as you don’t have to wait weeks. It takes less than 1 hour from printing the layout to having a fully etched board. Safety Tips. ArduinoPi web based controller for Arduino. UPDATE: New version found here The ArduinoPi is a web-based controller for the Arduino using the Raspberry Pi.
The advantage of using a Raspberry Pi (€28) is that its cheaper than an Ethernet shield (€35) and actually more useful. I talked about connecting the Raspberry Pi and Arduino over a serial connection and how to install and configure PHP serial class so PHP can talk with the Arduino. The principal behind ArduinoPi. Arduino GSM GPRS and GPS shield. Shield for Arduino designed and based on the module GSM/GPRS SIM900 or the GSM/GPRS & GPS module SIM908, to make calls, voice and data connections via GPRS.
This new version (old Arduino GSM shield) has several new hardware features, that allow maximum customization and provide many configurations. We begin with the supply circuit a simple LM7805. Learn Python The Hard Way, 2nd Edition — Learn Python The Hard Way, 2nd Edition. Aaron Beck. Section9. Overview The Mjolnir robot was born on a dirty napkin during a robotics discussion at lunch one day. The original idea was to build a remote-controlled, stair-climbing robot with live video feed, and a deployable flying reconnaissance drone.
We spent a lot of time researching the stair climbing design and many hours debating multi-wheels vs. tri-star wheels vs. tank treads vs. multi-tank treads and every combination in between. In the end we chose a tapering double track design for the sake of simplicity and versatility, but had our fabrication skills been more up to speed I think the coolness of the tri-star design would have carried the day. The project itself is named after Mjolnir , the legendary hammer of Thor. Despite these several setbacks, we are very pleased with what we actually ended up building.
As requested, here is a quick video that describes Mjolnir’s design and demonstrates some of its capabilities. Theory of Operation. BombJack. 3/May/2012 Author: Alex Quicklinks Background This project started late 2011 as a way for me to further hone my VHDL skills.
Mars Science Laboratory, the Next Mars Rover. Haskell. 3-way Quick-fit Extruder and Colour Blending Nozzle. Three extruder's and One Nozzle - RepRap material blending Hello everyone, I'm really excited about this one, I hope you like the results - Very first print. It’s taken a while to get this post written up, but a few recent things have really spurred me on to get it finished. I started work on colour mixing earlier this year and had some promising results with a basic, manual setup. Things moved onto other 3D printing developments and I got sidetracked for a few months. Sea Creatures. Space tech. Device-Sensitive CSS3 Template. Our project derives ideas from the classic breakout game.
In the game, there is a layer of bricks located on the top of the screen, a moveable paddle on the bottom, and a ball travelling across the screen. The objective of the game is to use the paddle to bounce the ball back up every time it falls down so that eventually the ball will break all the bricks. In our version, however, the game can be controlled with hand motions. Specifically, the player can move his hand left, right, up, or down to control the paddle accordingly. In addition to this, the player is allowed to accelerate or decelerate the ball by moving his hand up or down, respectively.
ShiftPWM: the easiest software PWM library for Arduino. Control many PWM outputs with only 3 Arduino pins ShiftPWM is a software PWM library for Arduino that uses shift registers to expand the number of PWM outputs. With only 3 data pins, you can control an almost unlimited amount of PWM outputs. Building the Simplest Possible pH Meter. How the pH Meter Works You can build a simple digital pH meter with just an inexpensive operational amplifier ("op amp") IC (a TL082 Dual JFET-input IC, about $2.00), 2 batteries, a digital volt meter, and a pH probe (mine's a Pinpoint brand probe that I got from Amazon.com for about $40).The TL082 (or any other operational amplifier with a high impedance input) works as a unity gain buffer between the high impedance of the pH probe and the digital multimeter.
Schematic Diagram of the pH Meter Here's the simple schematic diagram of the pH meter circuit. Two 9-volt batteries power a high-input-impedance operational amplifier, such as a TL082. The pH probe of the meter is connected to the non-inverting input. The output voltage (V out), which is directly proportional to pH, is read with a voltmeter. Video Spectrometer Construction. Introduction to 74HC595 shift register – Controlling 16 LEDs - Tutorials. This tutorial shows you how to control 16 LEDs with just 3 control lines. Site Information. Measuring the speed of sound « Flavourmixing. Random Sequence Generator based on Chua Circuit. Introduction. Machine Science. What if it actually works? Untitled. Projects. Introducing Easy Pulse: A DIY photoplethysmographic sensor for measuring heart rate.
When I first built the Heart rate measurement through fingertip project, the infrared LED and photodiode used for finger photoplethysmography were actually from salvaged parts, and therefore, I could not provide specifications for them in the article. Linux Joysticks and Other System Devices in NodeJS - Nodebits. Everyone knows that NodeJS can be used to make über fast webservers. Just in Time. DIY RC Receiver (Serial PPM) - AI Matt. When I was first getting into multirotors, I didn’t have an RC transmitter and receiver pair to control a quadcopter with. ~ of Simon Schoar » rfm12trx. A simple RFM12 433Mhz transceiver Having the ability to easily facilitate radio links when tinkering with electronics is always a nice option. Simple led message scrolling display construction using 8051 Microcontroller. Simple Outdoor LED Message Moving or Scrolling Sign Board Design Project with Circuit diagram| Electronic LED Scroller Generator for outdoor digital signs| Marketable LED sign board with Message scrolling.
Translate. Quadro Digital Video Pipeline for Broadcasting. Calling Bulletin Board Systems (BBS) Realtime Composite Video Decoding with PicoScope. Climate Change: Vital Signs of the Planet. Solve Puzzles for Science.
Technology Stories from Environmental Graffiti. Holden's website. Compare RC - Your search engine for all things Remote Controlled. Building wireless sensor applications using Dorji’s DRF5150S and DRF4432S RF modules (Part 1) Drawing by robot. 1 Month Live..and 1 more thing... Do-It-Yourself Gadgets. Made In Israel: Recycled Cardboard Bicycle F $9. 3G Camera Module PCB Connect CCD CMOS Camera See live video on Cell Phone anywhere in the world. DIY DE0-Nano Breakout Board. Build Your Own PhantomLink. EVEWiki.
How to Bring More Mindfulness into Your Life. 4004. Gear template generator program. Asciimation » Blog Archives » Taipan! on the Arduino(s). Part 9 – Finished! 50 Most Frequently Used UNIX / Linux Commands (With Examples) Pencil Balancer. CMOS camera as a sensor. Treehouse Projects – Engineering, Science, Technology, & Tinker Project Blog. BGA process notes. Erlang (programming language) Bamboo Bike. PCI-DVR-Digital-Video-Capture-Card-Channel-TV-Tuner-New- DVC3008. Cloud chamber for cosmic ray research. Optical Tomography Setup. Www.ist-schlau.de. Main Page - BRL-CAD. OpenWrt. Eventorbot. Nikola Tesla. LinkedIn Marketing. WRITING.
Spontaneous parametric down-conversion. Programmable RC Car: How-To Guide - JBProjects.net. Hong–Ou–Mandel effect. Bell test experiments. Maverick Science. What's this button do?