When building a robot (not a toy) and noise (EMF, EMI) is a concern, we may wish to test some of our circuits for frequency-response (how they handle the noise)We can buy a function/signal generator, or we can make our own very simply. Making a very simple one may do for our needs. We can use any mi...By: elicorrales
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from Instructables: exploring https://ift.tt/2ou45iF
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