EEVblog Electronics Community Forum

Products => Test Equipment => Topic started by: Radio Tech on March 19, 2014, 03:28:47 pm

Title: Cheap function generator
Post by: Radio Tech on March 19, 2014, 03:28:47 pm

http://www.amazon.com/Function-Generator-DIY-Tech-FG085/dp/B00C5UO8U6/ref=sr_1_2?ie=UTF8&qid=1395233159&sr=8-2&keywords=function+generator (http://www.amazon.com/Function-Generator-DIY-Tech-FG085/dp/B00C5UO8U6/ref=sr_1_2?ie=UTF8&qid=1395233159&sr=8-2&keywords=function+generator)

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Product Features

•Generating continuous waveforms of Sine, Square, Triangle, Ramp (up and down), and Staircase (up and down)
•Generating user defined arbitrary waveforms (AWG)
•Generating frequency sweeping signals of selected waveforms. Start frequency, stop frequency, and sweep rate can be independently set
•Generating servo test/control signals in micro-second resolution with user programmable pulse width, amplitude, and cycle
•Frequency (period), amplitude, and offset can be incrementally adjusted with rotary encoder

Saw this little kit and read a few reviews on it. Searched here to see what others had said but did not find anuthing.

Anyone here tried one of these?  For a cheap unit for field use may not be bad.

Title: Re: Cheap function generator
Post by: calin on March 19, 2014, 04:31:51 pm

I think these are the guys that make the kit: http://www.jyetech.com/Products/085/e085.php (http://www.jyetech.com/Products/085/e085.php)

Looks to me like an Arduino based FG (pleanty of projects around the net) with some output buffers added. Max frequency ~ 200Kz .. good enough to play with some servos etc. Really depends what you want to do.