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Old 11th July 2009, 07:59 AM   #1
Garyepe is offline Garyepe  China
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Default who can make the circuit of this picture?

this a handfree phone fuction picture.
Hope you can make the circuit of it .
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Old 14th July 2009, 09:25 AM   #2
Telemin is offline Telemin  United Kingdom
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Are you aiming to do a DIY handsfree home phone? If so then I might be able to help you as I have played around with phones DTMF and such before with a school technology project.

I'm not sure if the systems in your country would be different to here in the UK though.

Also why can you not just buy such a device, I am certain it would end up cheaper than making your own.
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