Open source design - Make a digital oscilloscope via Arduino

45541Published On Aug 30,2016 14:09 PMshare1

Originally written by suyanping


Often seen people making online digital oscilloscope, DSO must have digital-analog conversion unit, according to d/a conversion circuit can be divided into two modes: 1. Special ADC chip + single-chip, 2. using single-chip ADC count inside the converter. For the first model I tried two (see my blog: http://blog.Sina.com.CN/ntwhq), this circuit is a little more complex, component is more difficult to complete, it is difficult for beginners. The second structure is relatively simple, easyto make, but has a significant drawback, that is, withina narrow bandwidth, one of the more typical works are the overseas friends of http://www.serasidis.gr/circuits/AVR_oscilloscope/avr_oscilloscope.htm, the bandwidth of the oscilloscope only 7.7KHz. Domestic users and STC single-chip AVR production, but the actual bandwidth is less than 10KHz.







code

circuit

upload and test

some explanations

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James
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