GPS Visualization updates – selection by speed

September 30th, 2011 by admin No comments »

I’m in the habit of always carrying my GPS, recording where I go hiking, biking, or driving. Yesterday, while on a walk, I though that it should be pretty easy when visualizing the accumulated track to use different color for each mode of transportation. So, today I modified my GPS visualizer scripts a bit adding parameters that allow selection by speed range.

On this image my trips are color-coded, based on the track speed:

GPS Tracklog

Here, RED is Driving (or rather “likely driving” based on the speed range), GREEN is Biking, and BLUE is Hiking/Walking.

If somebody is interested, the visualizer scripts, some more images, and a sample video can be downloaded from here: http://avtanski.net/projects/gps .

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PIC Microcontroller Data Logger with Serial Interface

September 26th, 2011 by admin No comments »
PIC microcontroller based data logger with serial interface

Data logger

 

Some time ago I completed a data logger project and finally found time to document it and put the description online. The device amplifies and filters the analog signal from a sensor, then using a PIC microcontroller the data is digitized, encoded, and sent over serial (RS-232) interface to a computer. The project also includes scripts for processing and visualizing the data.

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Extreme Overclocking

September 19th, 2011 by admin No comments »

AMD FX processor overclocking world record: 8.429GHz! Pretty cool (literally; it’s liquid nitrogen cooled):

 

Cat Elevator

September 13th, 2011 by admin No comments »

The ultimate cat luxury – an elevator:

 

Advanced 3D Printing

July 26th, 2011 by admin No comments »

This 3D printer looks more advanced than everything I’ve seen so far:

 

GPS Visualization Tools

May 12th, 2011 by admin No comments »

Many of today’s GPS units have capability to record tracks data. Here is a way to process all the data from your GPS track logs and turn it into a picture, like these:

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Hackable Watch

April 12th, 2011 by admin No comments »

Here comes the ultimate geek accessory – a programmable and hackable wristwatch with a nice OLED display and BlueTooth connectivity, thanks to inPulse:

I already want one.

Another Cheap Oscilloscope

January 26th, 2011 by admin No comments »

Xprotolab Oscilloscope

Here comes another cheap oscilloscope…  For only $30-$35 you get this ATXMEGA 32A4-based MHz two analog channel oscilloscope and waveform generator.  A very small device with a 128×64 OLED display this looks like a great bargain.

Oscilloscope specifications:

  • 2 Analog Channels, 8 Digital Channels
  • Maximum Sampling rate: 2MSPS
  • Analog Bandwidth: 320kHz
  • Resolution: 8bits
  • Input Impedance: 1MΩ
  • Buffer size per channel: 256
  • Max. Input Voltage: +/- 10V

AWG specifications:

  • 1 Analog Channel
  • Maximum conversion rate: 1MSPS
  • Analog Bandwidth: 44.1kHz
  • Resolution: 8bits
  • Low output impedance
  • Buffer size: 256
  • Max. Output Voltage: +/- 2V

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DIY EKG machine

January 18th, 2011 by admin No comments »

Here comes is a neat little project – a DIY electrocardiogram (EKG, also sometimes ECG) machine. For all the hypochondriacs out there – “enjoy”!

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Monster Capacitor Bank

December 27th, 2010 by admin No comments »

This is what discharging 40 very big capacitors at the same time do to a beer can:

I think this has some serious magnetic railgun potential too… Hmmm…

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