GSM ?

Projects General Guidance
1

Hi All.

I have uploaded a schematic of an Arduino project i would like to make, my question is this, can i incorporate a GSM module to it?

Regards

Ray

combisystem.doc (57 KB)

2

The offical Arduino GSM shield needs 3 pins: RESET, TX and RX. Your schematic looks like you only have one spare pin.

Since your pushbuttons are already on analog pins, why not put the 3 resistors in a line so that you have a voltage divider? Then all buttons can use one pin and an analogRead() will be able to tell which button was pushed. That may give you enough free pins to add a GSM module.

3

Hi. Morgan5

Thanks for the info, i am not an electronics person, though i understand electricity somewhat, would you kindly draw me a schematic for the push button, for what you suggest, i would not like to get it wrong.

Regards

Ray

4

https://www.google.com/search?q=arduino+analog+button+input

5

Hi

Thanks for the way forward, i did not post the sketch as i do not have one, i cannot remember where i got the sketch from, only to say i googled it, but i forgot to bookmark the page can you help there me again?

Ray