This project uses very simple off-the-shelf high-brightness red LEDs. The theory is that each and every LED (even the standard ones) act as capacitors when it's connected backwards, and the speed at which it discharges depends by the light it "sees". Therefore, timing the discharge one can calculate how much light was there in the first place. A quicker way is to simply calculate the voltage drop provided by the LED when it's disconnected, which is what I am doing. The two bright LEDs are alternating between forward bias (emitting), reverse bias (charging) and high impedance (discharging). The ADC is triggered shortly after putting them into hi-Z mode, and uses a 1.5 V reference generated by an LM317. MCU: ATmega8 running at 8 MHz internal oscillator); binary size: 534 bytes.

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explanation for Crankshaft position sensor

Crankshaft position sensor ecu data car diagnostic

How to use a Ping ultrasonic sensor with an Arduino. You can purchase a PING ))) ultrasonic sensor at makershed.com

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More on using and testing Hall Effect Sensors www.bristolwatch.com also Introduction to Arduino www.youtube.com

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This will be the beginning of a series that I'm going to do on computer controlled systems. I've had quite a bit of response to the check engine light video and I think this is the next logical step. I've covered the basic operation of an O2 or oxygen sensor as the basis for closed loop operation. This will probably not be the last time I cover information on O2 sensors, there is soo much more to these than meets the eye. As always you can visit me at EricTheCarGuy.com ericthecarguy.com Stay Dirty ETCG

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Google Tech Talk August 2, 2010 ABSTRACT Presented by David Sachs. Gyroscopes, accelerometers, and compasses are increasingly prevalent in mainstream consumer electronics. Applications of these sensors include user interface, augmented reality, gaming, image stabilization, and navigation. This talk will demonstrate how all three sensor types work separately and in conjunction on a modified Android handset running a modified sensor API, then explain how algorithms are used to enable a multitude of applications. Application developers who wish to make sense of rotational motion must master Euler angles, rotation matrices, and quaternions. Under the hood, sensor fusion algorithms must be used in order to create responsive, accurate, and low noise descriptions of motion. Reducing sensing errors involves compensating for temperature changes, magnetic disturbances, and sharp accelerations. Some of these algorithms must run at a very high rate and with very precise timing, which makes them difficult to implement within low-power real-time operating systems. Within Android specifically, this involves modifying the sensor manager, introducing new APIs, and partitioning motion processing tasks. David Sachs began developing motion processing systems as a graduate student at the MIT Media Lab. His research there led him to InvenSense, where he continues this work with MEMS inertial sensors used in products such as the Nintendo Wii Motion Plus. David's designs incorporate gyroscopes <b>...</b>

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The CAM sensor or camshaft position sensor's role is to signal the ECM the camshaft position. The crank and cam sensor operate in sync with each other. Without the CAM sensor the vehicle may not even start and cause hard starting. The CAM sensor is mostly used to determine which injector to fire in a sequential system and for COP or coil on-plug ignition systems coil firing event.

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Explains MAF sensor diagnostic & operation. Modern MAF sensors employ a hot Platinum wire with specific circuitry to measure its current as it cools down due to incoming air. Learn how these components work. They're found in every vehicle today. Understand its operation and how to test it here. (note: We allow all schools and training institutions to use our software free of charge, so long as it is not sold to others. You're encouraged to download our free automotive simulation software for more information.

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This video explains how pixels are assigned RGB values using a bayer filter system. It is one of the many bonus lessons on my new DVD, Photoshop Crash Course which will teach you how to think in Photoshop terms. This particular video was made to help explain how pixels are assigned colors and why this is important when working in Photoshop. I hope that you will enjoy it. Please be sure to visit my blog for free tips and photography information. If you are a beginner getting into photography, I know it will help. Best Wishes! www.michaelthemaven.com

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Some early experiments with a Microsoft Kinect depth camera on a mobile robot base. Say hello to KinectBot.

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Explains the Oxygen sensor heater testing and operation. The O2 heater keeps it at 600F and it's actuated by the ECM. The ECM either controls a relay or the heater itself. We allow all schools and training institutions to use our software free of charge, so long as it is not sold to others. You're encouraged to download our free automotive simulation software for more information.

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Adam Stokowski, Louis Pilloni, James Kelly having fun in the neighborhood. Filmed by The Rider, Edited by Louis.

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A demonstration video of a technique used to automatically discover the locations of surfaces in the projection area using embedded light sensors. Project by Johnny Chung Lee - Carnegie Mellon University, 2003.

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SparkFun Engineer Jim Lindblom explains how ultrasonic sensors work, what you can use them for and some issues you may have if you try to use multiple ultrasonic sensors in the same area. Music by: Paniq - Story of Ohm www.SparkFun.com

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www.askthehardwareguy.com for more household tips. Electronic flame sensor trouble shooting for a furnace. Heater trouble shooting.

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See how revolutionary new Atmel XSense touch sensors can bring touch functionality to a wider array of consumer and industrial products. OEMs will be able to create larger, lighter, sleeker, curved and edgeless designs.

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Our man Scott sees a lot of dirty camera sensors. This is the method he's devised to make sure nothing gets in the way of your images.

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We took a $20 digital scale from Target and hooked it up to an amplifier and a microcontroller. This video outlines taking apart the scale, wiring it to the amplifier, and the code, as well as an overview of the concepts behind strain gauges and Wheatstone bridges. There's a demo of two live scale apps written in Python near the end of the video. For the source code or more information about our microcontroller kits, go to www.nerdkits.com

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www.wellsve.com Anti-lock brake system diagnostics and repair. 2002 Honda Accord ABS code 15-1 and PCM code P0135. Step by Step wheel speed sensor diagnostics and replacement. "The information presented in this program is based on a specific diagnostic case and might not directly apply to the vehicle you are repairing. We do not represent or warrant that the information presented is complete or error free. Please take all safety precautions. We disclaim any and all liability for losses, injuries or damages in connection with your repair."

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Google Tech Talks February 21, 2007 ABSTRACT Photographic Technology Day 5: In this session we examine how digital cameras capture images via the interaction of light with silicon in CCD and CMOS image sensors, including sampling and aliasing effects, noise effects, etc. Credits: Speaker:Dick Lyon

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installing process

TECH TRADE COPYRIGHT

Dave Scaler from MEA presents testing tips on the most popular import models your customers drive today. Learn quick & surefire ways to diagnose and fix the toughest problems in this growing portion of your repair business. Check it out at www.auto-video.com

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Detailed guide on using the recon motion sensor Our servers www.gametracker.com Our website www.tacticalgamer.com

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Describes the intricacies of the older Vane Air Flow Sensor found on the Bosch Jetronic and newer Japanese fuel injection systems from the 1970's to the 1990's. The VAF sensor is a mechanical fuel injection system that changes voltage output depending on the incoming air. The drawback to this older MAF sensor is that it did not account for air mass. There is more air in a cubic meter at colder temperatures than when the air is hotter. For this reason an air temp. sensor was often employed. See how this older system works. It's understanding also allows for a better knowledge base for other sensors. See it here in this great video, using the best CG animation.

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FORD Mass air flow sensors are in charge of measuring the amount of air that enters the engine. The FORD Mass Air Flow sensor is a very delicate sensor. It uses two wires to measure the amount of air flowing into the engine. The two wires are heated by electricity, and the more electricity used to heat the wires, tells the ECU how much air is flowing past the sensor's heated element. Between very fine dirt and the trend towards oiled filters, it's very important to clean the FORD MAF. Cleaning the MAF has so many benefits, like reducing pinging, increasing mileage, and preventing it from burning out, saving you lots of money. There's no reason to not clean the FORD MAF sensor once every 6 months. Also clean it shortly after installing or reinstalling an oil filed air filter. You don't need many tools. You'll need a flat head screwdriver and safety Torx or Tamper Proof Torx bits. Make sure you get the size seen on screen, which is T-20. Now, it's time for an important note. Only use the electric cleaner seen here. It's ELECTRICAL CONTACT CLEANER. This is the only thing you should use to clean your MAF. Only ELECTRICAL CONTACT CLEANER. No windex, no carb cleaner, no brake cleaner, no rubbing alcohol, and absolutely no Q-Tips. See it all here on this video. Presented using advanced software CG animation technology to help you understand. Part of our Automotive Technology series shown here on this channel. Enjoy...

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Wheel speed sensors of the Hall-Effect type are a fairly new development on ABS systems. Most WSS have traditionally been of the magnetic type. Hall Effect WSS employ its own reference voltage and ground to create a square wave signal. Learn how these components work and how to test them. This video exposes you to automotive technology concept using the best in computer animation and video editing. Learn it here.

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Another word for sensing is functionalization, something created to interact in specific ways. In Morgellons, sensing systems are genetically included in the biological systems which create fibers, namely bacteria and fungus. Living systems are genetically enhanced with synthetic biology. The materials in Morgellons are functional sensing materials, designed for a specific purpose at a particular site in the body. 1:52: This is the eye of a Morgellons victim which is populated with worms. She has recently had major surgery to remove part of her colon and intestines because of the disease of Morgellons. Her hair and skin have been completely replaced with synthetic materials, fibers and worms. The Morgellons specimen used in this video are simply background, NOT particularly illustrations of the text. Sensing is chemical detective work. Functionalized materials are chemically engineered to find the place in your body where they are specifically designed to do their job. Morgellons materials are functionalized for certain purposes. This identifies them as sensing materials. This video shows various kinds of sensing systems to give you an idea of how biological systems can be manipulated via sensing materials, inside the body. Your body has its own sensing systems. Your immune system is always standing by, ready to go into action in the prescence of pathogens. If someone designs material to change your immune system, they create a system which senses which cells to attack <b>...</b>

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May 30, 2007 lecture by Raj Amirtharajah for the Stanford University Computer Systems Colloquium (EE 380). In this talk, Raj gives an overview of energy harvesting mechanisms, describes circuit and system microarchitecture techniques for energy harvesting wireless sensors, and gives specific examples of designing for energy harvesting applications; lastly, he discusses future prospects for energy harvesting technology. EE 380 | Computer Systems Colloquium: www.stanford.edu Stanford Computer Systems Laboratory: csl.stanford.edu Stanford Center for Professional Development: scpd.stanford.edu Stanford University Channel on YouTube: www.youtube.com

Computer science software engineering programming design application Raj Amirtharajah wireless energy sensors circuits

www.FroKnowsPhoto.com There are a few different sensor sizes out there today. You have Full Frame and Cropped Sensors and now Four Thirds which I did not speak about in this video. On the Nikon end you have FX and DX. FX is a full frame sensor based on a 35mm size and DX is a cropped sensor based on a 24mm or APS size. There are advantages and perceived disadvantages to both. With Full Frame you get much better Hi-ISO capability but it is much more expensive. DX is a small sensor but makes your longer lenses act like they have more power. You multiply any lens you put on the camera by 1.5X to determine its 35mm equivalent. The downside is you need to purchase special ultra wide lenses to capture really wide angle images on DX. Another disadvantage to DX is you will not want to use those lenses on a Full Frame camera. So it becomes a dilemma on weather not to purchase a lot of DX lenses or not. On the Canon side you have three sensor sizes. Full Frame, 1.3x magnification in their sports cameras and APS-C which is 1.6x magnification. On the canon side. Any lens that you place on the APS-C sensor you will multiply by 1.6x to get the 35mm equivalent. As in the Nikon the larger the sensor the better the Hi-ISO capability the camera will be. Unlike Nikon Canon utilizes a 1.3x cropped sensor int heir high end sports camera. Sports photographers like having their longer glass have more reach. The cameras that have Full Frame sensors will be more expensive because they are more <b>...</b>

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Robot Tiles using fabric sensors DigInfo TV - diginfo.tv 17 TOKYO FIBER '09 SENSEWARE University of Tsukuba, Hiroo Iwata, Kuraray Robot Tile

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Hope this helped a few of you out! Twitter - www.twitter.com Get the new snapshot - mojang.com

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In response to a viewer request Ellsworth designs a circuit for generating music, sound effects and motion control for an art installation. It uses the unique properties of the passive infrared sensor to detect motion and direction of people in the room. For more information visit www.element-14.com Used in the project: Passive Infrared Sensor (PIR) TI LaunchPad MSP430 Opamps Gear reduced motors MIDI Devices

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Describes the relative terms range, tank height, fill height and dead band to help in the selection and configuration of your ultrasonic level sensor. www.flowline.com

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So this video will be going up on Machinima soon but I wanted to give it to you guys first. Enjoy! Welcome to the first episode of the "revamped" FIELD STRIPPING series for Call Of Duty Black Ops. In this series, I breakdown critical components of my game plays and analyze strategies that work well and sometimes those that do not work so well. This episode is from a game of team deathmatch on Villa. I go over the dogs 11 killstreak and how to effectively use the motion sensor equipment and the decoy grenade. I also talk about the map, Villa, and what areas to control to be successful. Remember, Let me know what you guys think about the changes. The layout, graphical style, commentary, etc. Your comments and suggestions will only make this series better. Rate Comment, Subscribe. Do whatever it is you do and Thanks for watching! Mike

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Check out my growing DIY projects blog at: electronicsandbeer.blogspot.com This is my first working multi-module prototype. Mode of operation: Infrared emitters for one pixel turn on for about 100 microseconds, then an analog reading is taken, then the IR emitters are turned off. Then the controller goes to the next pixel and repeats until it has cycled through the 4 pixels. It does this cycling through the 4 pixels around 30 times per second. The current pushed through the IR emitters is 140 mA, but since the emitters are on for only a short period of time, the average current consumption of the IR emitters is only a couple percent of the full current, so more like 3-4 mA.

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AutoSonar Auto Reverse Sensors System - Installation Video. 2008 Honda Accord. www.autosonar.com

autosonar Auto Reverse Sensors System Installation Video. http://www.autosonar.com

A typical oxygen sensor and interpreting an oxygen sensor code ATTENTION! ATTENTION!!!!! This is mainly for codes P0134 and P0135, or codes that specify no activity or heater circuit malfunction. Codes that show high(rich mixture) or low(lean mixture) volts can be triggered by vacuum/exhaust leaks, misfires, or anything else that is considered a tune up task. ~ $200+ is spent unnecessarily when people misinterpret some oxygen sensor codes and replace catalytic converters instead of checking over all possible causes CAREFULLY. I am considering that subject matter in a another video not yet posted. I have started a website at www.mikesautomotive.auto.officelive.com

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This video looks as the FrSky telemetry dasboard DHT-U as well as the FSH-01 telemetry sensor hub and several sensors that might be used in an RC plane, boat or truck. The first thing we do is fire everything up on the bench to make sure it's working okay. So far so good -- but I do notice that the GPS update is very slow (once every 5-seconds) and while there's a lot of seemingly useless information (such as X/Y/Z acceleration figures, some basic data such as "distance from home" is not included on the display. The next step is to throw all this gear into a model and see how it performs in the field. If you have any questions or comments on part 1 of this review you can use the comments form below or visit the thread in the RCModelReviews forums at: www.rcmodelreviews.com Stay tuned for part 2.

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Learn how to block all 3 sensors the easy way! Blog: versatile1.wordpress.com

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This example illustrates how to use location-based services in Android. First, we use LocationManager to figure out our current location based on the resources in the environment available to the device, such as GPS or a wireless network. Secondly, we use Geocoder to convert this location to an address.

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I show you how to replace your O2 Sensor. This is being performed on a 1997 Chevy Tahoe. Automotive oxygen sensors, colloquially known as O2 sensors, make modern electronic fuel injection and emission control possible. They determine if the air fuel ratio exiting a gas-combustion engine is rich (with unburnt fuel vapor) or lean (with excess oxygen).

O2 Sensor Oxygen Sensors Check Engine Light

A simplified overview of Oxygen Sensor diagnosis and replacement. This is a simple approach and brief overview.

Oxygen Sensors and NTK

www.fh.ooe-at Control a slightly modified RC car in a natural way through movements of your mobile phone! ShakerRacer uses the acceleration sensor of eg the Nokia N95 and sends the steering commands via Bluetooth to the car. Something for the next James Bond? More info at: www.symbianresources.com

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AutoSonar Auto Reverse Sensors System - Installation Video. 2008 Honda Accord. www.autosonar.com

autosonar Auto Reverse Sensors System Installation Video. http://www.autosonar.com

devirkahan.com - Join host Devir Kahan as he takes you through one of the most commonly loved aspects of technology, photography. Everything from buying cameras, to how and why they work, as well as some shooting tips, is covered in this episode, so sit back, relax, and join the Photo Genetics.

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Hear the story of the world's most innovative athletic evaluation & improvement tool directly from the Under Armour innovators responsible for making it. LIKE Under Armour on Facebook: www.facebook.com

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Mobile Phones as Sensors for Enhancing Lifestyles Quinn Jacobson [Research Leader, Nokia Research Center - Palo Alto] Abstract: Using mobile phones to access information from the digital world of the Internet is becoming common, and many people are also using mobile phones to explicitly publish information to the Internet. But todays phones also have sensors that enable them to observe the physical world around them and potentially share this information, either autonomously or semi-autonomously. This provides a huge potential to have communities of users collect information about the physical world and fundamentally change our collective awareness. The physical world contains more sensory data than we can possibly comprehend... so which data is important? How much do we need? And most importantly, how do we ensure that the phone maintains this trust by diligently protecting the privacy and safety of its use?

CITRIS UCB Research Techonology Science