NERP Tonite! A Red Pitaya (And a special request.)

NERP is not exclusively Raspberry Pi, the small computer and embedded systems interest group at Pumping Station:One in Chicago. NERP meets every other Monday at 7pm at Pumping Station:One, 3519 N. Elston Ave. in Chicago.
Tonight at NERP, Drew Fustini will introduce us to a brand new, small single board Linux computer. The Red Pitaya is so different from, say a Raspberry Pi that comparing the two would be like comparing, well, raspberries and pitayas. The Red Pitaya (pitaya is also known as dragon fruit) does high speed high quality data acqusition and control with several kinds of i/o. Scientists and engineers can use the Red Pitaya to build custom hardware and virtual instrumentation interfaces for precise measurement and control applications. The ADC/DAC’s are very fast compared normal embedded systems. The processor configuration is also different from normal RPi class systems. To give an idea of just how different the Red Pitaya is from an RPi, the Red Pitaya’s Hello World program is a Digital Storage Oscilloscope. Drew will show us how¬† to get signals of various types into and out of the Red Pitaya, and some examples of time and frequency analysis can work in virtual instrumentation. Delicious. Also, Drew does Really nice slides!

Speaking of analog — Tonight we’ll have a brief diversion into the land of discrete analog electronics. The Colpitts oscillator is an alternative to Direct Digital Synthesis for producing sine waves in the RF spectrum. Joe Talafous has been working with the Colpitts circuit, and he will show us how to get RF out of a few cheap components. I like to remember that Electronics for the DIY’er used to be “hard” before the advent of Arduino shields. Facetiously it might be said that analog RF is _real_ electronics.

A special request for a worthy cause: Cathleen Doyle (cdoyle at northbrook dot info) tells us that the Northbrook Public Library will be running a whole month of programs this June highlighting maker/diy activities. They’re hoping to find someone who could give an awesome, introductory lecture/demonstration on the many uses of Raspberry Pi’s and how they work. Would there be anyone PS:One could recommend and who would be willing? We do pay!

Find NERP and Pumping Station:One at
Doors open at 6:30pm.
NERP is free and open to the public.
Ed Bennett ed @ kinetics and electronics com
Tags: electronics, embedded, NERP, Open Source,
raspberry pi, hackerspace, Beagle Bone, Element14, Pumping

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