how to use your speaker as a microphone

TomatoHead · **Posted:** October 25th, 2008, 2:31 am

I think you can do this Ipodlinux... I think they have a guide.

Adbot · **Posted:** October 25th, 2008, 2:31 am

Gontcha · **Posted:** November 1st, 2008, 11:11 am

I could swear i posted a response to this before, but anyways; You can do it, and I've done it, as a part of my opamp circuit testing. Speaker and microphone have the same mechanics, a coil moving in a magnetic field to generate current. You just have to amplify your power output to hear anything. Some cheap walkie-talkies use their speaker as a microphone.

Lego Pi3 · **Posted:** November 1st, 2008, 6:12 pm

is there a way to use it as both? like at the same time

Gontcha · **Posted:** November 2nd, 2008, 11:48 am

Lego Pi3 wrote:

is there a way to use it as both? like at the same time

nope, you'll have to use some sort of a switch.

Dirtbiking06 · **Posted:** November 4th, 2008, 1:16 am

I don't completely understand, but I don't think you can.