High-res Cap meter by RomanBlack [Back to Home Page] www.RomanBlack.com High res cap meter with PIC 16F628High resolution capacitance meter measures in 0.01pF digits. Total range 0pF to 50uF. - 27th Jun 2011, Updated 25th may 2013. Another PIC based capacitance meter? Although there are a few PIC based "pico" capacitance meters on the internet this design has some advantages over the other designs I have seen; About Us RMCybernetics is a diverse company, based in Alsager, Cheshire. We specialize in new science and technology, and aim to help present these topics in an easily understandable way. The range of topics covered in the Science section are tailored to help give a better understanding of the universe, and the technology which can be created from it. We also undertake Research projects, with an aim to discover new information about the things surrounding us every day.
Science RMCybernetics offers a range of excellent scientific services. We work with organisations and individuals all over the world on projects involving scientific and technical consultancy, custom electronics, cybernetics and physics research, media production for magazines, television and online. We also provide wide selection of free science information and support via our website. If you are interested in any of the services mentioned above, please contact us, otherwise, take a look at the links below for a selection of fascinating scientific topics. Total solar eclipse captivates Asia DIY Air Quality Sensing from HabitatMap and Sonoma Tech DIY Air Quality Sensing from HabitatMap and Sonoma Tech tigoe — May 9th, 2013 High-precision air quality monitors are normally very expensive, but Tim Dye of Sonoma Technology is on a mission to change that. He’s been working with Michael Heimbinder and habitatmap.org to create a low-cost sensor system that when designed properly and integrated into a software platforms can provide valid data. AirCasting is a platform for recording, mapping, and sharing health and environmental data using Arduino and Android.
Xantrex C35/C40/C60 Display The display shows the following: -Battery Voltage-Input Voltage (wind, solar, etc) (averaged over the last ten readings)-Amperage (averaged over the last ten readings)-Wattage (averaged)-Transistor Temperature and Duty Cycle (these two values alternate between each other)-Amp-Hour counter As far as features go: -Automatic backlight control; if no input voltage for 60 seconds, backlight turns off-Automatic reset of Amp-hour counter if an hour elapses with no input voltage
Joule thief The circuit is variant of the blocking oscillator that forms an unregulated voltage boost converter. The output voltage is increased at the expense of higher current draw on the input, but the integrated (average) current of the output is lowered and brightness of a luminescence decreased. History In the "Ingenuity Unlimited" section (readers' ideas) of the November 1999 issue of Everyday Practical Electronics (EPE), page 804, Z. Kaparnik from Swindon published a simple circuit entitled "Micro-torch Circuit". The circuit consisted of a transformer-feedback single-transistor voltage converter based on the blocking oscillator, which originally used a vacuum tube / thermionic valve and dates prior to World War II.
Rusk County Amateur Radio Club: Op Tools This page contains information from a variety of sites including DX operation, propagation and more. If you have any suggestions for information to be listed here please contact us! QSL Bureau Search RS-232 Laser Transceiver Published in Electronics Australia Oct. 1997 pp.56-61 Laser based projects used to be expensive, until the development of solid state lasers. This project is designed for the entry level laser experimenter.
ARDUINO SOLAR CHARGE CONTROLLER ( Version 2.0) Parts: 1.Arduino Nano (Amazon / eBay) 2.P-MOSFET ( Amazon / IRF 9540 x2 ) 3.Power diode ( Amazon / MBR 2045 for 10A and IN5402 for 2A) 4.Buck Converter ( Amazon / eBay) or Voltage Regulator (LM7805) REUSE YOUR OLD LAPTOP BATTERY TO MAKE A POWER BANK Few months ago my Dell laptop battery did not work.Whenever I unplug it from main AC supply,the laptop switched off immediately.After few days of frustration, I replaced the battery and kept the dead one (as per my laptop message) for tinkering.I was curious what I would find inside it.Then I go through several blogs and forum to get some ideas.I got lot of things from Then I took apart the battery and charged them by using a good charger.By luck I found 4 batteries are in good condition. I used this battery to make a descent power bank.It really works fine for me.I thought I'd share the info to all.So that any one reuse it without throwing it in to the dust bin. In this tutorial I will show you, how to harvest the 18650 battery from any of the old laptop battery pack you might have. Most of the time, laptop battery packs go bad when just one or few cells in the pack are dead.
Making Your Own Solder Paste Stencils Making Your Own Solder Paste Stencils Skill Level: Intermediate by Paul Smith | October 25, 2012 | 56 comments