Turn a smart phone into a signal generator

Posted on Friday, June 14th, 2013 in how-to, measurement by DP


Jacob Beningo has written an article detailing how to turn a smart phone into a signal generator:

Signal generators are a handy thing to have around the lab. They are perfect for testing inputs on a new hardware design and verifying the behavior of a circuit before connecting all the pieces together. In recent years these lab tools have not only decreased in size but also in cost. The result has been a plethora of portable versions that now exist on the market.

For an engineer-on-the-go, this is very convenient but often times having to bring one more piece of equipment always seems to put the tool bag over the 50 pound limit. This is one reason why it is becoming popular to design lab equipment that can be plugged into a smart phone. Rather than carry around another device with a computer in it, utilizing the computing power and capabilities of the phone allows the device to be smaller, cheaper and weigh less!

This entry was posted on Friday, June 14th, 2013 at 7:00 pm and is filed under how-to, measurement. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “Turn a smart phone into a signal generator”

  1. Alan says:

    DC Offset? Maximum output level? Heck, what if you accidentally short out a channel – do you kill your phone?
    Sounds like this needs to be combined with a Chu-Moy headphone amp. Which, in turn, leads to possible problems with earthing: watch out for what the metallic case is sitting on.

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