Thursday, April 14, 2011
Phoenix Science Experiments
Phoenix depends heavily on Python language. The data acquisition, analysis and writing simulation programs to teach science and computation.
Different sensors elements can be interfaced and accessed by few lines of Pythoncode. Phoenix utilizes the power of personal computers for experiment control, data acquisition and its mathematical analysis.
PMDK is an easy-to-use, low cost micro-controller development system. The hardware consists of an ATmega16MCU, LCD display and regulated DC supply. All the I/O pins of the MCU are available on sockets.
The instrument is designed using locally available low cost components and the design is freely available for commercial production. Design supports hardware plug-in modules for expansion. Phoenix is developed using Free Software tools.
The serial and USB versions can be easily interfaced to a PC. They can also be programmed through the serial/USB ports after uploading a bootloader program to ATmega16.
Wednesday, April 13, 2011
John Owen has made Enriching Electronics Pages at vwlowen.co.uk. There are many Ham Radio projects too.
A highlight is the "Build A PICAXE Weather Station." This is quite Exhaustive and Detailed.
Here he teaches in simple tongue, The method and steps to towards the first project and that too, with the Sacred SG555 Timer.
Here is where he dazzles, He has developed very useful Calculators to make your Numbers Game a Piece of Cake.
MiscEl - Many Electronic Calculations
The program contains a lot of pages with different electronic calculations. Each page contain one or more different calculations.
Science calculators are on Geometry and Periodic table. Some Electronic Calculators are shown below
- TinyCalc Can do the same as the entry line in Calculator, but is very small when pulled out.
- Ohms law Ohms law, impedance of capacitor and inductors, complex power
- Waveforms Calculates RMS, mean, PEEK, DC, FFT for different waveforms.
- Thermo sensors Calculates for PT100, NTC and all types of thermocouples
- Series/parallel Calculate/design series/parallel connection of resistors, capacitors and inductors
Tuesday, April 12, 2011
Radiocalc - Convertisseur Radio Universel
Thanks to RadioCalc the different dB charts are obsolete by computing the ratios of Power (W) or Voltages (V) according to dB = 10*log(P2/P1) ou dB = 20*log(V2/V1).
Just for a trial : type 100/10 (or just 10) and push the dB button as the 'W' mode is chosen, the result will be 10 dB, then choose the 'V' mode by clicking in the V button (in the Quick dB window) push again dB, the result is now 20 dB.
From - Temcom - Consulting for test & measurement and electronics in France
(This was Earlier Radiocalc, i have now updated the link to the new site in France)
Monday, April 04, 2011
GM Arts - Music Guitar Science
"Hello World! I live in Adelaide, South Australia, and my interests are electric guitar, playing live music, writing MIDI sequences, programming in Visual Basic, dabbling in electronics, with a casual interest in popular science. I have some years of experience in these fields, and use these Web pages to share my knowledge freely. .."
Most musical instruments and their amplification systems, such as those used for public address (PA), recording and hi-fi are designed to reproduce sound as accurately as possible. Electric guitar and its amplification is completely different: every item in the guitar signal chain is designed to modify the raw guitar signal in some way.
- Guitar Amplifiers - valves vs transistors, some overdrive circuit ideas.
- Guitar Pickups - get the most out of them alone and in combination,
- MIDI Music - A guide on MIDI messages, circuit for a PC-MIDI interface.
- Pickup Winder Web Page
- Overdrive schematics - partial designs
- Pickup wiring and switching ideas