wrathofnero
- Nov 10, 2009
- 1
- Joined
- Nov 10, 2009
- Messages
- 1
In using a DTMF decoder, I hope to be able to use the 12 buttons of a telephone to turn on and off 12 appliances. We have the decoding schematic mapped out perfectly, but the question I have is about the phone we're to use. We don't have a phoneline. So, how can we power up the phone and also have it wired into the board? OR, if we use a computer, can we just splice an 1/8" cable and put the + and - in their designated spots out of the sound card with a digital DTMF keypad?
Thank you.
Thank you.