I'm trying to build a DTMF controlled robot.
I have mc-145026 circuit, can i use it as receiver from my mobile's DTMF tone, using an audio jack?
The link below shows the details of the circuit, i wanna use only receiver(Rx) along with mobile phone. https://www.bakatronics.com/shop/item.aspx?itemid=459
i tried, did not succeed. i might have made some mistake(i'm not sure of the connection).
I want to know if:
1. It can be done?
2. How?
Yes as implied the headphone jack o/p may not have the dtmf tones on it, plug in a pair of headphones and try it, if you cant hear dtmf tones then thats the problem.
I built a dtmf code lock a bit back which worked from a mobile, the circuit has a mic, you hold up the phone to the mic and type in the number, the circuit picks up the tones from the phone using the mic, might not have the range to control a robot though.