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Phone dialer module
As i am new to this community i wondered if anyone has developed a phone call function module using a simple sim900 modem.
I am trying to implement a MM project so i needed help in building the module.
Ping if anyone interested!
@AdnanAhmed97 we talked offline. What did u get done so far?
implement a MM project
I hope this will hwlp you
The easiest way is to use Mobile Phone. All mobile phones use DTMF tone for dialing numbers. Use 3.5mm headphone jack to take generated sound as input to DTMF decoder. If you are using smartphone and you do not want to use dial pad, there are number of apps in the market which can produce DTMF tone.
@singhsoniya4nov he wants the UI on MM, and an external keypad to enter the number(in the near term), show on mirror, button to start and end call. button takes number and sends to modem (I think via serial port ) monitor status from modem, etc… detect end of call…
@sdetweil Nothing so far! I am stuck
@AdnanAhmed97 on discord, send me the info about how the keypad is wired to the pi… what pins mean what keypad characters