Dev Kit Weekly: Budget Tools Review Digilent Analog Discovery 3
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This June, Digilent released the Analog Discovery 3 (AD3). It features a number of enhancements and backward compatibility with the vast majority of Analog Discovery 2 (AD2) projects.
The AD3 has the following capabilities: 125 MS/s sample rate, USB C (2.0), dual 14-bit analog inputs, dual ±5V 14-bit analog outputs, 16 digital I/O pins, +5V and -5V variable power supplies, and massive software functionality via WaveForms.
The WaveForms software is free, though you’ll need to provide an email address in order to get a download link. A welcome screen includes options for use as a scope, wave generator, power supply, voltmeter, logger logic analyzer, network analyzer, etc. Instruments can be used simultaneously; for instance, you can use the wave generator to create a signal, and read it out on the scope. This multi-tool functionality is extremely powerful, though in some situations different resources may conflict with one another.
The AD3 is clearly a powerful and versatile tool, with a usability/size ratio that’s off the charts. The drawback to this sort of computer-based instrument is the fact that while it might give you access to 14 different test tools (depending on how you count), there’s a practical limitation to how much you want on your screen at one time.
Where this unit would really shine is in electronics education. Students can constantly try out new ideas and techniques, and being able to take your tools anywhere in a backpack is fantastic. On the other end of the lectern, it would also be excellent for online or in-person presentations.
The AD3 retails for $379, or you can pick up an AD2 for $299. Of course, you can also register for the contest, linked above, and potentially get an AD3 for $0! Good luck!