Blog About: DTMF Decoder Board Project using the MT8870

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Collin Schulz of the Twin Cities wrote in with a fun project he's working on: a DTMF shield.

This one is for the phreakers of the past. A simple Arduino shield to decode...

[Rogal] wrote a cell phone application called ToneTool that generates audio tone sequences. It can be used to output DTMF and SelCall sequences which are used by telephone systems and radio-telecommunication hardware. The software is written in J2ME so if you have a cell phone that can run Java apps it will probably work for [...]

Check out this handy DTMF remote control interface from EmilioFicara. Turn relays on and off with sound.

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This Playstation Portable LED Controller Board project that is sure to make your PSP stand out from the crowd.  A tiny surface mount PICAXE microcontroller was mounted to a tiny custom board and custom programmed to provide a nice LED display. Doesn’t seem to be much details of the build, hopefully there is more detail [...]

I think I'll try it with #10 cans. They usually become flower pots at my house. Two of the big cans are "high steppers" (all little kids need this version of stilts). Now several more will become a stool/hassock. Thanks for the good idea. A picture of your project would be nice. But your directions are clear enough to do this project in several incarnations without. I don' t have a scanner either.

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