Physics Flash Animations We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. AVR projects and AVR Butterfly gcc port by Martin THOMAS G.d.W. SS2010 FHFFM Measuring Battery Voltage with an ADC > Measuring Battery Voltage with an ADC How to measure the voltage on a power source that is greater than the maximum rating of your ADC If you are using a battery powered device, it's often useful to be able to measure the current voltage level on the battery to estimate how much stored energy is left. You may wish to alert the user if the charge level drops below a certain level, for example, or automatically shut the device off beyond a certain lower threshold.
Circuit Simulator Applet This is an electronic circuit simulator. When the applet starts up you will see an animated schematic of a simple LRC circuit. The green color indicates positive voltage. The gray color indicates ground. A red color indicates negative voltage. Electronics Projects & Circuits If you've already worked through a few projects from my books; Electronics Projects For Dummies or Complete Electronics Self Teaching Guide and caught the electronics bug you might want to try a few projects from other sources. To help you out heres a list of some interesting electronics projects that we've found around the Web . These projects look interesting and are well documented but we haven't had a chance to build them all, so results may vary! We've also included links to other Web sites that contain projects you can browse through. We make no warranty as to the safety of these projects, only tackle projects that you have the knowledge and skills to work on safely. Electric Wire Locator: This project by Charles Wenzel can be used to locate electric wires in walls, it may be useful when remodeling.
Capacitor uF - nF - pF Conversion Chart Capacitors and Resistors for Tube Electronics - JustRadios Capacitor uF - nF - pF Conversion Chart When reading schematics, repairing radios and buying capacitors, you often must convert between uF, nF and pF. Paper and electrolytic capacitors are usually expressed in terms of uF (microfarads). Short forms for micro farad includeuF, mfd, MFD, MF and UF. Mica capacitors are usually expressed in terms of pF (micromicrofarads) (picofarads). Short forms for micromicrofarads include pF, mmfd, MMFD, MMF, uuF and PF. Hobby projects - Simple electronic circuits Computer microphones Learn how to interface electret and dynamic microphones to the standard computer sound card. Metal detectors Theory of operation and schematics of the most common metal detectors used today: Very Low Frequency (VLF), Pulse Induction (PI) and Beat-Frequency Oscillator (BFO).
RotaryEncoders ALPS STEC12E07 Encoder A rotary or "shaft" encoder is an angular measuring device. It is used to precisely measure rotation of motors or to create wheel controllers (knobs) that can turn infinitely (with no end stop like a potentiometer has). DorkbotPDX Instead of a weekly order, 2 layer circuit boards are now sent to the fab when the panel fills up. This means panels are going out 2 to 3 times a week instead of just once a week. Contents New ordering website! OSH Park!
LED driving and controlling methods I decided to write this quick tutorial for two reasons: First because there are many people who would like to know more about driving and controlling LED lights, and second because i was provided an excellent LED driver chip from Farnell for test, and i wanted to put it under the microscope. So i will place this chip against some other LED drivers to see how good it is. The chip that I'm talking about is the A6210 from Allegro Microsystems. It is a Buck-Regulating LED Driver able to drive up to 3A load with constant current, with switching frequencies up to 2 MHz and supply voltage from 9 to 46 volts. Build the BASIC SPY TRANSMITTER - Page 1 of 16 Build the 2 transistor Spy Transmitter Radio frequency projects can seem more difficult than most electronics projects because most of the time you cannot build them on a solderless breadboard and there may be parts used that are not easy to source such as coils and adjustable capacitors. This project is focused towards those who have not yet attempted to build any kind of RF project, and it is laid out in such a way as to make it easy to explore the basic principles of RF circuitry and ensure a successful final product. This simple 2 transistor audio transmitter will send the sounds picked up in a room to any FM radio tuned to the same frequency as the transmitter, somewhere between 80 and 100 Megahertz. The expected range will be at least 100 feet and could be substantially longer depending on the parts used and the quality of your final product. Figure 1 - You can salvage most of the parts needed from an old radio
IMAX B6 50W 5A Charger/Discharger 1-6 Cells (GENUINE) The IMAX B6 is a very advanced charger, able to charge, balance and discharge LiIon, LiPoly, LiFe (A123), NiCd and NiMH batteries. It is microprocessor controlled just like all the best chargers and will balance the indervidual cells in you Li-XX batteries. It will charge from 0.1 to 5.0A and is capable of charging packs up to 6S packs. It features input voltage protection so as not to flatten your car battery at the field and will also storage charge you packs for when you are not using them. You can power it with any power supply delivering from 11~18V so it is very flexible.
Silicon farmers SMT Soldering–It’s easier than you think! is our new Manga Comic that shows you step by step tips and techniques for learning to solder SMT parts . We’d love to get your feedback on the comic. We are in the process of working out the kinks so we can get translations of the comic into everyone's hands – we’ll keep you posted. For everyone that learns better with hands on experience we are offering our SMT 2D6 SMT Learn to Solder Kit in the store.