Connection problem between PIC16F877A and Sony Ericsson T230

[elektrog]

Hi everyone,

I have a project and I want to make communicate my cell phone and µc each other

for sending SMS. Is there any idea about this topic?

1. Can they communicate without signal converter? ( MAX232 etc. )



Thanks...

 

[davemaster]

Re: Connection problem between PIC16F877A and Sony Ericsson

Hi everyone,

I have a project and I want to make communicate my cell phone and µc each other

for sending SMS. Is there any idea about this topic?

1. Can they communicate without signal converter? ( MAX232 etc. )



Thanks...

Greetings

It is possible. First, take this in mind: the PIC16F877A works with 5V, and the phone works at 3 or 3.3V; so, we need to convert 5V to 3 or 3.3V interface.

For that, just use a voltage divider with a couple of resistors you find easily at your residence zone, you could protect the 3 or 3.3V side with a 3.3 V Zener in addition to the voltage divider...

Good luck!