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Amplified speaker with MOVI

posted Dec 01, 2017 03:35:23 by randy
Can I us any amplified self-contained speaker (such as a powered computer speaker or powered CB radio external speaker) that plugs into a headphone jack and has its own power supply? The requirement of a 32-ohm speaker has me confused, because I don't think I want to drive a speaker directly, but if I'm amplifying the signal -- how does that figure in? I know that headphone output is not the same as line output, but I'm not sure if that matters in this case.
Incidentally, I'm amazed at how easy and accurate the MOVI is to use with an Arduino! I'm having a ton of fun, having tested every sample program successfully. I plan to control my Lionel train layout with voice commands, simulating a conversation between a control tower and an engineer ;-)
Thanks!
[Last edited Dec 01, 2017 03:41:47]
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GeraldFriedland said Dec 12, 2017 00:48:23
Yes, the 32ohm speaker is the specification from the chip manufacturer.

You should be able to plug in anything that is amplified. Just don't try to drive a high wattage 4ohm speaker without amplification with MOVI. That would most likely short circuit the main chip.

Gerald
[Last edited Dec 12, 2017 00:49:47]
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