One of my next projects is going to be interfacing an alarm system (HAI Omnipro 2) to a 'duino type controller and a GSM interface to do some texting, and possibly some other connection things (Doorbell rings, places voice call to my cell - two way audio from GPRS board to intercom system directly - audio not processed through 'duino.
I'm looking closely at:
GSM/GPRS Shield for Arduino (SIM900 module from SIMCOM) (ebay listing) - Actually I ordered one. ($38) or
GPRS/GSM Quadband Module for Arduino / Raspberry Pi (SIM900) from Spain, but available on Amazon for a too-high price of $114
BTW. I *think* telna ([url]http://www.telnamobile.com)[/URL] has the best deal on pay-as-you-go with long-expiration times on pre-paid accounts. I THINK these are the best bet for hobbyists... Open to suggestions.
Question for Paul & Co. Is this advisable? Is there a better solution. What is your preferred board / interface logic-level converter that you suggest to implement connections to a 5V board from a Teensy 3.0? Or do you recommend even doing this at all?
I've just run into so many problems with straight Arduino stuff (Pro-Mini 5V connected to MP3 Player Shield) with crappy libraries, even with your malloc fix, that I want to switch all my current and future projects over to Teensey 3.0 due to its speed and capacity.
Thanks for any advice!
I'm looking closely at:
GSM/GPRS Shield for Arduino (SIM900 module from SIMCOM) (ebay listing) - Actually I ordered one. ($38) or
GPRS/GSM Quadband Module for Arduino / Raspberry Pi (SIM900) from Spain, but available on Amazon for a too-high price of $114
BTW. I *think* telna ([url]http://www.telnamobile.com)[/URL] has the best deal on pay-as-you-go with long-expiration times on pre-paid accounts. I THINK these are the best bet for hobbyists... Open to suggestions.
Question for Paul & Co. Is this advisable? Is there a better solution. What is your preferred board / interface logic-level converter that you suggest to implement connections to a 5V board from a Teensy 3.0? Or do you recommend even doing this at all?
I've just run into so many problems with straight Arduino stuff (Pro-Mini 5V connected to MP3 Player Shield) with crappy libraries, even with your malloc fix, that I want to switch all my current and future projects over to Teensey 3.0 due to its speed and capacity.
Thanks for any advice!