15:17How to Use the MT8870 DTMF Decoder with a PICAXE MicrocontrollerRandi Rain2.4K viewsView & Download
4:58How to make DTMF Decoder using 8870 IC | SdevElectronicsSDev Electronics13.7K viewsView & Download
10:20Built a DIY DTMF Decoder Circuit | Electronic project | DTMF Decoder MT8870BEE INNOVATIVE STAY CREATIVE479 viewsView & Download